Table of Contents
- About This Guide
- Table of Contents
- Overview
- Getting Started
- Customizing Your Phone
- Basic Call Features
- Advanced Phone Features
- Troubleshooting
- Regulatory Notices
- Appendix A - Time Zones
- Index
Yealink T48G-SFB User Manual
Displayed below is the user manual for T48G-SFB by Yealink which is a product in the IP Phones category. This manual has pages.
Related Manuals
Copyright © 2014 YEALINK NETWORK TECHNOLOGY CO., LTD.
Copyright © 2014 Yealink Network Technology CO., LTD. All rights reserved. No parts of this
publication may be reproduced or transmitted in any form or by any means, electronic or
mechanical, photocopying, recording, or otherwise, for any purpose, without the express written
permission of Yealink Network Technology CO., LTD. Under the law, reproducing includes
translating into another language or format.
When this publication is made available on media, Yealink Network Technology CO., LTD. gives
its consent to downloading and printing copies of the content provided in this file only for private
use but not for redistribution. No parts of this publication may be subject to alteration,
modification or commercial use. Yealink Network Technology CO., LTD. will not be liable for any
damages arising from use of an illegally modified or altered publication.
THE SPECIFICATIONS AND INFORMATION REGARDING THE PRODUCTS IN THIS GUIDE ARE
SUBJECT TO CHANGE WITHOUT NOTICE. ALL STATEMENTS, INFORMATION, AND
RECOMMENDATIONS IN THIS GUIDE ARE BELIEVED TO BE ACCURATE AND PRESENTED
WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED. USERS MUST TAKE FULL
RESPONSIBILITY FOR THEIR APPLICATION OF PRODUCTS.
YEALINK NETWORK TECHNOLOGY CO., LTD. MAKES NO WARRANTY OF ANY KIND WITH
REGARD TO THIS GUIDE, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. Yealink Network Technology
CO., LTD. shall not be liable for errors contained herein nor for incidental or consequential
damages in connection with the furnishing, performance, or use of this guide.
Hereby, Yealink Network Technology CO., LTD. declares that this phone is in conformity
with the essential requirements and other relevant provisions of the CE, FCC.
This device is marked with the CE mark in compliance with EC Directives 2006/95/EC and 2004/108/EC.
This device is compliant with Part 15 of the FCC Rules. Operation is subject to the following two conditions:
1. This device may not cause harmful interference, and
2. This device must accept any interference received, including interference that may cause undesired
operation.
Note: This device is tested and complies with the limits for a Class B digital device, pursuant to Part 15 of the
FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a
residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not
installed and used in accordance with the instructions, may cause harmful interference to radio
communications. However, there is no guarantee that interference will not occur in a particular installation. If
this equipment does cause harmful interference to radio or television reception, which can be determined
by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more
of the following measures:
1. Reorient or relocate the receiving antenna.
2. Increase the separation between the equipment and receiver.
3. Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
4. Consult the dealer or an experience radio/TV technician for help.
To avoid the potential effects on the environment and human health as a result of the
presence of hazardous substances in electrical and electronic equipment, end users of
electrical and electronic equipment should understand the meaning of the crossed-out
wheeled bin symbol. Do not dispose of WEEE as unsorted municipal waste and have to
collect such WEEE separately.
We are striving to improve our documentation quality and we appreciate your feedback. Email your
opinions and comments to DocsFeedback@yealink.com.
Yealink SIP-T48G IP phone firmware contains third-party software under the GNU General Public License
(GPL). Yealink uses software under the specific terms of the GPL. Please refer to the GPL for the exact terms
and conditions of the license.
The original GPL license, source code of components licensed under GPL and used in Yealink products can
be downloaded online:
http://www.yealink.com/GPLOpenSource.aspx?BaseInfoCateId=293&NewsCateId=293&CateId=293.
About This Guide
ix
Thank you for choosing the SIP-T48G IP phone, an ultra-elegant gigabit IP phone which is
exquisitely designed to provide business telephony features, such as Call Hold, Call
Transfer, Busy Lamp Field, Call Recording, Multicast Paging and Conference over an IP
network. Newly developed industrial designs and user experience appears the
commerce, touch panel enabling switching between screens and application.
This guide provides everything you need to quickly use your new phone. First, verify
with your system administrator that the IP network is ready for phone configuration. Also
be sure to read the Packaging Contents and Regulatory Notices sections in this guide
before you set up and use the SIP-T48G IP phone.
If this is your first time using the SIP-T48G IP phone, we recommend that you first refer to
the
Quick Installation Guide
and
Quick Reference Guide
, available online:
http://www.yealink.com/SupportDownloadfiles.aspx?CateId=147&flag=142.
Note
Topics provided in this guide include:
Chapter 1 Overview
Chapter 2 Getting Started
Chapter 3 Customizing Your Phone
Chapter 4 Basic Call Features
Chapter 5 Advanced Phone Features
Shared Line, Busy Lamp Field List, Network Directory and Network Call Log features are
hidden for IP phones in neutral firmware, which are designed for BroadWorks
environment. Please contact your system administrator for more information.
User Guide for the SIP-T48G IP Phone
x
Table of Contents
xi
About This Guide .................................................................. ix
In This Guide.................................................................................................................... ix
Table of Contents .................................................................. xi
Overview ..............................................................................1
Hardware Component Instructions ................................................................................. 1
Icon Instructions................................................................................................................ 2
LED Instructions ................................................................................................................ 4
User Interfaces ................................................................................................................. 5
Phone User Interface .................................................................................................... 5
Web User Interface ....................................................................................................... 5
Documentations ............................................................................................................... 7
Getting Started .....................................................................9
Packaging Contents ......................................................................................................... 9
Phone Installation........................................................................................................... 11
Phone Initialization ......................................................................................................... 13
Registration .................................................................................................................... 14
Touch Screen Display ..................................................................................................... 14
Navigating Menus and Fields ....................................................................................... 16
Entering Data and Editing Fields .................................................................................. 17
Phone Status................................................................................................................... 18
Basic Network Settings .................................................................................................. 19
Customizing Your Phone....................................................... 23
General Settings ............................................................................................................ 23
Wallpaper.................................................................................................................... 23
Backlight ...................................................................................................................... 24
Contrast ....................................................................................................................... 25
Language .................................................................................................................... 26
Time & Date ................................................................................................................. 27
Administrator Password ............................................................................................. 30
Key as Send ................................................................................................................ 31
Audio Settings ................................................................................................................ 31
User Guide for the SIP-T48G IP Phone
xii
Volume ......................................................................................................................... 31
Ring Tones ................................................................................................................... 32
Contact Management ................................................................................................... 34
Directory ...................................................................................................................... 34
Local Directory ............................................................................................................ 36
Blacklist........................................................................................................................ 51
Remote Phone Book ................................................................................................... 53
Call History Management ............................................................................................. 55
System Customizations .................................................................................................. 59
Headset Use ............................................................................................................... 59
Bluetooth Headset ...................................................................................................... 61
DSS Keys ..................................................................................................................... 67
Account Management ............................................................................................... 75
Dial Plan ...................................................................................................................... 78
Live Dialpad ................................................................................................................ 83
Hotline ......................................................................................................................... 84
Basic Call Features .............................................................. 87
Placing Calls ................................................................................................................... 88
Answering Calls ............................................................................................................. 90
Ending Calls ................................................................................................................... 91
Redialing Numbers ........................................................................................................ 92
Recent Call In Dialing .................................................................................................... 92
Auto Answer ................................................................................................................... 93
Auto Redial ..................................................................................................................... 94
Call Completion ............................................................................................................. 95
Call Return ...................................................................................................................... 97
Call Mute ........................................................................................................................ 98
Call Hold/Resume .......................................................................................................... 98
Do Not Disturb (DND) .................................................................................................... 99
Call Forward................................................................................................................. 104
Call Transfer ................................................................................................................. 111
Call Waiting .................................................................................................................. 113
Conference ................................................................................................................... 113
Local Conference ...................................................................................................... 114
Network Conference ................................................................................................ 115
Call Park ....................................................................................................................... 117
Call Pickup .................................................................................................................... 118
Anonymous Call ........................................................................................................... 122
Anonymous Call Rejection ........................................................................................... 123
Advanced Phone Features ................................................ 125
Busy Lamp Field (BLF).................................................................................................. 125
Table of Contents
xiii
Call Recording .............................................................................................................. 128
Hot Desking .................................................................................................................. 131
Intercom........................................................................................................................ 132
Outgoing Intercom Calls .......................................................................................... 133
Incoming Intercom Calls ........................................................................................... 133
Multicast Paging .......................................................................................................... 135
Sending RTP Stream ................................................................................................. 135
Receiving RTP Stream ............................................................................................... 137
Music on Hold .............................................................................................................. 139
Messages ..................................................................................................................... 140
Voice Mail.................................................................................................................. 140
Message Waiting Indicator (MWI) .......................................................................... 142
Troubleshooting ................................................................. 145
Regulatory Notices ............................................................ 155
Service Agreements .................................................................................................... 155
Limitations of Liability................................................................................................... 155
Safety Instructions ........................................................................................................ 155
Appendix A - Time Zones .................................................. 157
Index ................................................................................. 159
User Guide for the SIP-T48G IP Phone
xiv
Overview
1
This chapter provides the overview of the SIP-T48G IP phone. Topics include:
Hardware Component Instructions
Icon Instructions
LED Instructions
User Interfaces
Documentations
If you require additional information or assistance with your new phone, contact your
system administrator.
The main hardware components of the SIP-T48G IP phone are the touch screen and the
keypad.
User Guide for the SIP-T48G IP Phone
2
Hardware component instructions of the SIP-T48G IP phone are:
Item
Description
①
Power Indicator LED
Indicates phone power and some feature statuses.
②
Touch Screen
Shows information about calls, messages, soft keys,
time, date and other relevant data:
• Call information—caller ID, call duration
• Icons (for example, )
• Missed call text or second incoming caller information
• Prompt text (for example, “Saving file…”)
• Time and date
③
HEADSET Key
Toggles and indicates the headset mode.
④
MUTE Key
Toggles and indicates mute feature.
⑤
HOLD Key
Places a call on hold or resumes a held call.
⑥
TRANSFER Key
Transfers a call to another party.
⑦
Speakerphone Key
Toggles the hands-free speakerphone mode.
⑧
MESSAGE Key
Accesses voice messages.
⑨
REDIAL Key
Redials a previously dialed number.
⑩
Position the cursor.
Enable or disable fields.
Turn pages or scroll through values for a field.
Scroll through items.
Confirms actions or answers incoming calls.
Cancels actions or rejects incoming calls.
⑪
Volume Key
Adjusts the volume of the handset, headset, speaker and
ringer.
⑫
Keypad
Provides the digits, letters and special characters in
context-sensitive applications.
Icons appearing on the touch screen are described in the following table:
Icons
Description
Network is unavailable
Registered successfully
Register failed
Overview
3
Icons
Description
(Flashing)
Registering
Hands-free speakerphone mode
Handset mode
Headset mode
Multi-lingual lowercase letters input mode
Multi-lingual uppercase letters input mode
Alphanumeric input mode
Numeric input mode
Multi-lingual uppercase and lowercase letters
input mode
Voice Mail
Auto Answer
Do Not Disturb
Call Forward
Call Hold
Call Mute
Ringer volume is 0
Received Calls
Placed Calls
Missed Calls
Forwarded Calls
Recording box is full
User Guide for the SIP-T48G IP Phone
4
Icons
Description
A call cannot be recorded
Recording starts successfully
Recording cannot be started
Recording cannot be stopped
Bluetooth mode is on
Bluetooth headset is both paired and connected
The default caller photo and contact icon
Power Indicator LED
LED Status
Description
Solid red
The phone is initializing.
Fast flashing red
The phone is ringing.
Slow flashing red
The phone receives a voice mail.
Off
The phone is powered off.
The phone is idle.
The phone is busy.
The call is placed on hold or is held.
The call is mute.
Note
The above introduces the default power indicator LED status. The status of the power
indicator LED is configurable via web user interface. For more information, refer to
Yealink_SIP-T4X_IP_Phone_Family_Administrator_Guide_V72_2
.
Overview
5
Two ways to customize configurations of your SIP-T48G IP phone:
The user interface on the IP phone.
The user interface in a web browser on your PC.
The hardware components keypad and touch screen constitute the phone user
interface, which allows the user to execute all call operation tasks and basic
configuration changes directly on the phone. In addition, you can use the web user
interface to access all configuration settings. In many cases, it is possible to use either
the phone user interface and/or the web user interface interchangeably. However, in
some cases, it is only possible to use one or the other interface to operate the phone
and change settings.
You can customize your phone by tapping the Menu soft key to access the phone user
interface. The Advanced option is only accessible to the administrator, and the default
administrator password is “admin” (case-sensitive). For more information on
customizing your phone with the available options from the phone user interface, refer
to Customizing Your Phone on page 23.
In addition to the phone user interface, you can also customize your phone via web user
interface. In order to access the web user interface, you need to know the IP address of
your new phone. To obtain the IP address, press the OK key on the phone. Enter the IP
address (e.g., http://192.168.0.10 or 192.168.0.10) in the address bar of web browser on
your PC. The default administrator user name and password are both “admin”
(case-sensitive).
The main options you can use to customize the IP phone via phone user interface and/or
via web user interface are listed in the following table:
Options
Phone User Interface
Web User Interface
Status
√
√
--IPv4
--MAC
--Firmware
--Network
--Phone
--Accounts
Basic Call Features
√
User Guide for the SIP-T48G IP Phone
6
Options
Phone User Interface
Web User Interface
--Auto Answer
√
--Auto Redial
√
--Call Completion
√
--Call Forward
√
--Call Waiting
√
--Call Park
√
--Call Pickup
√
--Call Return
√
--Conference
--Anonymous Call
√
--Anonymous Call Rejection
√
--DND
√
Basic Phone Settings
--Language
√
√
--Time & Date
√
√
--Administrator Password
√
√
--Ring Tones
√
√
--Wallpaper
√
√
--Backlight
√
√
--Call History Management
√
--Contact Management
√
--Local Directory
√
√
--Blacklist
√
√
--Remote Phone Book
√
--LDAP
√
--Dial Plan
√
--DSS Keys
√
√
--Key as Send
√
√
--Hotline
√
√
--Live Dialpad
√
Advanced Phone Features
√
--BLF
√
--Call Recording
√
--Hot Desking
√
--Intercom
√
--Multicast Paging
--Music on Hold
--Messages
√
SIP Account
√
--User Options
--Register Status
√
Overview
7
Options
Phone User Interface
Web User Interface
--Account Status
√
--Label
√
--Display Name
√
--Register Name
√
--User Name
√
--Password
√
--SIP Server 1/2
√
--Server Option
--Registrar Port
--Outbound Status
√
--Outbound Proxy
√
--NAT Traversal
--STUN Status
√
--STUN Server
√
Note
The following table shows documentations available for the SIP-T48G IP phone.
Name
Contents
Where found
Language
Quick Installation
Guide
Basic setup of the
phone
In the package
English
Quick Reference
Guide
Basic call features
and phone
customizations
In the package
English
User Guide
Phone/Web user
interface settings
Basic call features
and advanced
phone features
CD attached in
the package
English
Note
The table above lists most of the feature options. Please refer to the relevant sections for
more information.
You can also download the latest documentations online:
http://www.yealink.com/DocumentDownload.aspx?CateId=142&flag=142.
User Guide for the SIP-T48G IP Phone
8
Getting Started
9
This chapter provides the following basic installation instructions and information for
obtaining the best performance with the SIP-T48G IP phone. Topics include:
Packaging Contents
Phone Installation
Phone Initialization
Phone Status
Basic Network Settings
Registration
Touch Screen Display
If you require additional information or assistance with your new phone, contact your
system administrator.
The following components are included in your SIP-T48G IP phone package:
SIP-T48G IP Phone
Phone Stand
User Guide for the SIP-T48G IP Phone
10
Wall Mount Bracket (Optional)
Power Adapter (Optional)
Handset & Handset Cord
Ethernet Cable
Quick Installation Guide & Quick Reference Guide
Getting Started
11
CD-ROM
Check the list before installation. If you find anything missing, contact your system
administrator.
If your phone is already installed, proceed to Phone Initialization on page 13.
This section introduces how to install the phone:
1) Attach the stand or the optional wall mount bracket
2) Connect the handset and optional headset
3) Connect the network and power
1) Attach the stand or the optional wall mount bracket
Desk Mount Method
Wall Mount Method (Optional)
Note
The wall mount bracket should be purchased separately.
The top two slots are plugged up by silica gel. You need to pull out silica gel before
attaching the wall mount bracket. For more information on how to mount your phone to a
wall, refer to
Yealink Wall Mount Quick Installation Guide for T4X IP Phones
.
User Guide for the SIP-T48G IP Phone
12
2) Connect the handset and optional headset
Note
3) Connect the network and power
You have two options for power and network connections. Your system administrator will
advise you which one to use.
AC power (Optional)
Power over Ethernet (PoE)
AC Power (Optional)
To connect the AC power:
1. Connect the DC plug on the power adapter to the DC5V port on the phone and
connect the other end of the power adapter into an electrical power outlet.
2. Connect the included or a standard Ethernet cable between the Internet port on the
phone and the one on the wall or switch/hub device port.
The headset, wireless headset adapter EHS36 and Bluetooth USB Dongle BT40 should be
purchased separately.
The EXT port can also be used to connect an expansion module EXP40.
For more information on how to use EHS36, EXP40 and Bluetooth USB Dongle BT40, refer
to Yealink EHS36 User Guide, Yealink EXP40 User Guide and Yealink Bluetooth USB
Dongle BT40 User Guide.
Getting Started
13
Power over Ethernet
With the included or a regular Ethernet cable, the SIP-T48G IP phone can be powered
from a PoE-compliant switch or hub.
To connect the PoE:
1. Connect the Ethernet cable between the Internet port on the phone and an
available port on the in-line power switch/hub.
Note
After your phone is powered on, the system boots up and performs the following steps:
Automatic Phone Initialization
The phone finishes the initialization by loading the saved configuration. The touch
screen displays "Initializing…Please wait" during the initialization.
DHCP (Dynamic Host Configuration Protocol)
The phone attempts to contact a DHCP server in your network to obtain valid IPv4
network settings (e.g., IP address, subnet mask, default gateway address and DNS
address) by default.
Note
If in-line power switch/hub is provided, you don’t need to connect the phone to the power
adapter. Make sure the switch/hub is PoE-compliant.
The phone can also share the network with another network device such as a PC
(personal computer). It is an optional connection.
Important! Do not unplug or remove power to the phone while it is updating firmware
and configurations.
If your network does not use DHCP, proceed to Basic Network Settings on page 19.
User Guide for the SIP-T48G IP Phone
14
Generally, your phone will be deployed with multiple other phones. In this case, your
system administrator will configure the phone parameters beforehand, so that after you
start up your phone, the phone will be registered and ready for use. If your phone is not
registered, you may have to register it. For more information on how to register your
phone, refer to Account Management on page 75.
Idle Screen Display
If the phone has successfully started up, the idle screen will be shown. The following
figure is an example of what is displayed on the touch screen.
No.
Name
Description
1
Status Bar
Displays the phone’s default account, icons and
the time and date.
2
Default Account
The label of the default account is displayed on
the left of the status bar.
3
Icons
Icons are displayed in the center of the status
bar.
4
Time and Date
The phone’s time and date are displayed on the
right of the status bar.
5
Line Keys (1-11)
The idle screen displays line keys 1-11 and the
line keys 1-6 on the left can be used to activate
Getting Started
15
up to six lines.
Various features can be assigned to line keys.
Each line key can show the label and indicate
status of the assigned feature.
6
DSS Key
Provides a quick access to the line key
configuration screen.
7
Wallpaper
Shows the specified wallpaper. You can
customize the wallpaper. For more information,
refer to Wallpaper on page 23.
8
Call Window
Displays the call information.
9
Shortcut Keys
: tap this shortcut key to enter the History
screen and view call history.
: tap this shortcut key to enter the Directory
screen and view contacts.
: tap this shortcut key to toggle the DND
mode or enter the custom DND configuration
screen.
: tap this shortcut key to enter the main
menu.
Configuration Screen Display
User Guide for the SIP-T48G IP Phone
16
No.
Name
Description
1
Screen Title Area
Displays the title of the access menu screen.
2
Operation Option Area
Displays various operation options for
different menu screens.
3
Menu Tree Area
Displays menu items.
You can tap the desired menu item to enter
the corresponding feature configuration
screen.
4
Configuration Area
Displays configuration items of the
highlighted menu item in the menu tree area.
You can configure feature settings in this
area.
5
Soft Keys
Label automatically to identify their
context-sensitive features.
To navigate menus and fields, you can:
Tap soft keys on the touch screen.
Tap menu items, fields, and arrows on the touch screen.
Press keys on the phone keypad.
Note
To operate your phone, follow these tips:
If you want to
Action
Enter the main menu.
Tap .
Return to the idle screen.
Tap .
Go back to the previous menu.
Tap or press .
Select an item.
Tap the item.
Scroll to the item by pressing or .
Scroll through items page by
page.
Tap or .
(If you are in the call history, recent call list,
language configuration screen or ring tones
configuration screen, you can also press
or .)
Scroll through values for a field.
Tap the field’s highlighted gray box. From the
pull-down list, tap or to scroll through
The menu system will automatically exit to the idle screen after 60 seconds of inactivity.
Getting Started
17
values page by page, or press or to
scroll values one by one.
Select a value for a field.
From the pull-down list, tap the value or scroll
to the value and then press .
You can enter data and edit fields using the keypad on the phone:
To enter or edit data:
1. Tap the field.
2. Do one of the following:
If you want to
Action
Enter only numbers (1),
uppercase (A) characters,
lowercase (a) characters, or
alphanumeric (2aB) characters.
Press a digit key one or more times to enter the
characters (in either lowercase or uppercase
mode) or number that displays on the digit
key.
You can tap the IME soft key one or more times
to switch between uppercase (ABC soft key),
numeric (123 soft key), alphanumeric (2aB soft
key), title case (Abc soft key) and lowercase
(abc soft key) input modes.
For example, if the input mode is ABC:
- To enter “A”, press once.
- To enter “B”, press two times quickly.
- To enter “C”, press three times
quickly.
Enter special characters.
Press the digit key , or .
(These keys provide a different set of special
characters.)
Delete text you entered.
Press or to position the cursor to the
right of the text you want to delete, and then
tap the Delete soft key.
Delete an entire field of data.
Double tap the field of data, so that the data is
highlighted, and then tap the Delete soft key.
3. Press or tap the Save soft key.
Note
When the phone is in the pre-dialing screen, you can enter characters using the
on-screen keypad.
User Guide for the SIP-T48G IP Phone
18
You can view phone status via phone user interface or web user interface.
Available information of phone status includes:
General information (IP address, MAC address and firmware version)
Network status (e.g., IPv4 status, IPv6 status, IP address mode and MAC address)
Phone status (e.g., device model, hardware version, product ID and device
certificate status)
Account status (e.g., register status of SIP accounts)
Note
To view the phone status via phone user interface:
1. Press , or tap ->Status.
2. Tap the desired item to view the specific information.
To view the phone status via web user interface:
1. Open the web browser on your computer.
2. Enter the IP address in the browser’s address bar, and then press the Enter key.
You can view the device certificate status via phone user interface only.
Getting Started
19
3. Enter the user name (admin) and password (admin) in the login page.
4. Click Confirm to login.
The phone status is displayed on the first page of the web user interface.
If your phone cannot contact a DHCP server for any reason, you need to configure
network settings manually. The IP phone can support either or both IPv4 and IPv6
addresses.
To configure the IP address mode via phone user interface:
1. Tap ->Advanced (password: admin) ->Network->WAN Port.
2. Tap the gray box of the IP Mode field.
User Guide for the SIP-T48G IP Phone
20
3. Tap the desired value (IPv4, IPv6 or IPv4 & IPv6) from the pull-down list.
4. Tap the Save soft key to accept the change or to cancel.
To configure a static IPv4 address via phone user interface:
1. Tap ->Advanced (password: admin) ->Network->WAN Port->IPv4.
2. Tap the gray box of the Type field.
3. Tap Static IP from the pull-down list.
4. Enter the desired values in the IP Address, Subnet Mask, Gateway, Primary DNS
and Secondary DNS fields respectively.
5. Tap the Save soft key to accept the change or to cancel.
To configure a static IPv6 address via phone user interface:
1. Tap ->Advanced (password: admin) ->Network->WAN Port->IPv6.
2. Tap the gray box of the Type field.
3. Tap Static IP from the pull-down list.
Getting Started
21
4. Enter the desired values in the IP Address, IPv6 IP Prefix, Gateway, Primary DNS and
Secondary DNS fields respectively.
5. Tap the Save soft key to accept the change or to cancel.
If you are using an xDSL modem, you can connect your phone to the Internet via PPPoE
mode. Set the WAN port as a PPPoE port. The PPPoE port will perform a PPP negotiation
to obtain the IP address. Contact your system administrator for the PPPoE user name
and password.
To configure PPPoE via phone user interface:
1. Tap ->Advanced (password: admin) ->Network->WAN Port->IPv4.
2. Tap the gray box of the Type field.
3. Tap PPPoE from the pull-down list.
4. Enter the PPPoE user name and password in the corresponding fields.
5. Tap the Save soft key to accept the change or to cancel.
Note
Wrong network settings may result in inaccessibility of your phone and may also have an
impact on your network performance. For more information on these parameters,
contact your system administrator.
User Guide for the SIP-T48G IP Phone
22
Customizing Your Phone
23
You can customize your SIP-T48G IP phone by personally configuring certain settings, for
example, wallpaper, time & date and ring tones. You can add contacts to the phone’s
local directory manually or from the call history. You can also personalize different ring
tones for different callers.
This chapter provides basic operating instructions for customizing your phone. Topics
include:
General Settings
Audio Settings
Contact Management
Call History Management
System Customizations
If you require additional information or assistance with your new phone, contact your
system administrator.
You can customize the wallpaper of the SIP-T48G IP phone. You can change the
wallpaper image via phone user interface or web user interface. You can also upload
custom wallpaper images via web user interface. The file format of wallpaper image
must be *.jpg, *.webp or *.bmp. A single file size must be less than 5M. and the total size
of all custom wallpaper must be within 20M.
To change the wallpaper via phone user interface:
1. Tap ->Basic->Display->Wallpaper.
User Guide for the SIP-T48G IP Phone
24
2. Tap or , or press or to select the desired wallpaper image.
3. Tap the Save soft key to accept the change or to cancel.
Wallpaper is configurable via web user interface at the path Settings->Preference.
To upload the custom wallpaper via web user interface:
1. Click on Settings->Preference.
2. In the Upload Wallpaper (800*480) field, click Browse to locate the wallpaper
image from your local system.
3. Click Upload to upload the file.
4. Click Confirm to accept the change.
The custom wallpaper appears in the pull-down list of Wallpaper.
You can configure backlight to adjust the brightness of the touch screen. Backlight On
Intensity is used to adjust the backlight intensity of the touch screen. Backlight time
specifies the delay time to turn off or dusky the backlight when the IP phone is inactive.
Customizing Your Phone
25
Backlight Idle Intensity decides whether the IP phone turns off or dusky the backlight of
the touch screen after a period of inactivity.
You can configure the backlight status on the touch screen as the following types:
Always On: Backlight is on permanently.
15s, 30s, 60s, 120s, 300s, 600s, 1800s: Backlight goes out or turns dusky when the
phone has been inactive for approximately 15, 30, 60, 120, 300, 600 or 1800
seconds.
To configure the backlight via phone user interface:
1. Tap ->Basic->Display->Backlight.
2. Tap the gray box of the Backlight Active Level field.
3. Tap the desired level from the pull-down list.
4. Tap the gray box of the Backlight Inactive Level field.
5. Tap the desired value from the pull-down list.
6. Tap the gray box of the Backlight Time field.
7. Tap the desired time from the pull-down list.
8. Tap the Save soft key to accept the change or to cancel.
Backlight is configurable via web user interface at the path Settings->Preference.
You can configure the contrast of the expansion module EXP40 connected to the
SIP-T48G IP phone to a comfortable level on the phone. Ensure that the expansion
module has been connected to the phone before configuration.
To configure the contrast via phone user interface:
1. Tap ->Basic->Display->Contrast.
2. Tap the gray box of the Contrast Level field.
User Guide for the SIP-T48G IP Phone
26
3. Tap the desired value from the pull-down list.
The default contrast level is 6.
4. Tap the Save soft key to accept the change or to cancel.
The default language of the phone user interface is English. The phone will detect and
use the same language as which of your web browser for the web user interface. If the
language of your web browser is not supported by the phone, the web user interface
will use English by default. You can change the language for the phone user interface
and the web user interface respectively.
Note
To change the language for the phone user interface:
1. Tap ->Basic->Language.
Not all of the supported languages are available for selection. The available languages
depend on the language packs currently loaded to the IP phone. Please contact your
system administrator for more information on the available languages of your new
phone.
Customizing Your Phone
27
2. Tap the desired language.
3. Tap the Save soft key to accept the change.
Text displayed on the phone user interface will change to the selected language.
To change the language for the web user interface:
1. Click on Settings->Preference.
2. Select the desired language from the pull-down list of Language.
3. Click Confirm to accept the change.
Text displayed on the web user interface will change to the selected language.
The time and date are displayed on the touch screen when the phone is idle. You can
configure the phone to obtain the time and date from the SNTP server automatically, or
configure the time and date manually. If the phone cannot obtain the time and date
from the Simple Network Time Protocol (SNTP) server, contact your system administrator
for more information.
User Guide for the SIP-T48G IP Phone
28
To configure the SNTP settings via phone user interface:
1. Tap ->Basic->Time & Date->General.
2. Tap the gray box of the Type field.
3. Tap SNTP Settings from the pull-down list.
4. Tap the gray box of the Time Zone field.
5. Tap the time zone that applies to your area from the pull-down list.
The default time zone is "+8 China(Beijing)".
6. Enter the domain names or IP addresses of SNTP servers in the NTP Server 1 and
NTP Server 2 fields respectively.
7. Tap the gray box of the Daylight Saving field.
8. Tap the desired value from the pull-down list.
9. Tap the Save soft key to accept the change or to cancel.
Note
To configure the time and date manually via phone user interface:
1. Tap ->Basic->Time & Date->General.
2. Tap the gray box of the Type field.
3. Tap Manual Settings from the pull-down list.
Please refer to Appendix A - Time Zones for the list of available time zones on the IP
phone.
Customizing Your Phone
29
4. Enter the specific date and time in the corresponding fields.
5. Tap the Save soft key to accept the change.
The time and date displayed on the touch screen will change accordingly.
There are 7 available date formats. For example, for the date format “WWW DD MMM”,
“WWW” represents the abbreviation of the week, “DD” represents the two-digit day,
and “MMM” represents the first three letters of the month.
The date formats you need to know:
Date Format
Example (2013-7-27)
WWW MMM DD
Sat Jul 27
DD-MMM-YY
27-Jul-13
YYYY-MM-DD
2013-07-27
DD/MM/YYYY
27/07/2013
MM/DD/YY
07/27/13
DD MMM YYYY
27 Jul 2013
WWW DD MMM
Sat 27 Jul
To configure the date and time format via phone user interface:
1. Tap ->Basic->Time & Date->Format.
2. Tap the gray box of the Date Format field.
3. Tap the desired date format from the pull-down list.
4. Tap the gray box of the Time Format field.
User Guide for the SIP-T48G IP Phone
30
5. Tap the desired time format (12 Hour or 24 Hour) from the pull-down list.
6. Tap the Save soft key to accept the change or to cancel.
Time and date are configurable via web user interface at the path Settings->Time &
Date.
The Advanced option is only accessible to the administrator. The default administrator
password is “admin”. For security reasons, you should change the default administrator
password as soon as possible.
To change the administrator password via phone user interface:
1. Tap ->Advanced (password: admin) ->Set Password.
2. Enter the old password in the Current Password field.
3. Enter the new password in the New Password field.
4. Enter the new password again in the Confirm Password field.
5. Tap the Save soft key to accept the change or to cancel.
Administrator password is configurable via web user interface at the path
Security->Password.
Customizing Your Phone
31
You can set the "#" or "*" to perform as a send key while dialing.
To configure key as send via phone user interface:
1. Tap ->Call Features->General.
2. Tap the gray box of the Key as Send field.
3. Tap # or * from the pull-down list, or tap Disabled to disable this feature.
4. Tap the Save soft key to accept the change or to cancel.
Key as send is configurable via web user interface at the path Features->General
Information.
You can press the volume key to adjust the ringer volume when the phone is idle. You
can also press the volume key to adjust the receiver volume of currently engaged audio
devices (handset, speakerphone or headset) when the phone is in use.
User Guide for the SIP-T48G IP Phone
32
To adjust the volume when the phone is idle:
1. Press to adjust the ringer volume.
Note
To adjust the volume when the phone is during a call:
1. Press to adjust the volume of currently engaged audio device (handset,
speakerphone or headset).
Ring tones are used to indicate incoming calls. You can select different ring tones to
distinguish different accounts registered on your phone, or to distinguish your phone
from your neighbor’s.
To select a ring tone for the phone via phone user interface:
1. Tap ->Basic->Sound->Ring Tones.
If ringer volume is adjusted to minimum, the icon will appear on the touch screen.
Customizing Your Phone
33
2. Tap the desired ring tone.
3. Tap the Save soft key to accept the change or to cancel.
To select a ring tone for the account via web user interface:
1. Click on Account.
2. Select the desired account from the pull-down list of Account.
3. Click on Basic.
4. Select the desired ring tone from the pull-down list of Ring Type.
If Common is selected, this account will use the ring tone selected for the phone.
Refer to the above instruction.
5. Click Confirm to accept the change.
Note
A ring tone for the account is configurable via web user interface only.
The ring tone for an incoming call on the phone may be different. For example, when the
phone receives an incoming call from a contact stored in the local directory, it will play
the ring tone assigned to the contact in the local directory (refer to Adding Contacts). If
no ring tone is assigned to the contact, the phone will play the ring tone assigned to the
associated group (refer to Groups). Otherwise, the phone will play the ring tone
assigned to the account. If no ring tone is assigned to the contact, the associated group
and account, the phone will play the ring tone assigned to the phone.
User Guide for the SIP-T48G IP Phone
34
To upload a custom ring tone for your phone via web user interface:
1. Click on Settings->Preference.
2. In the Upload Ringtone field, click Browse to locate a ring tone file (the file format
must be *.wav) from your local system.
3. Click Upload to upload the file.
Note
This section provides the operating instructions for managing contacts. Topics include:
Directory
Local Directory
Blacklist
Remote Phone Book
Directory provides easy access to frequently used lists. The lists may contain Local
Directory, History, Remote Phone Book and LDAP.
To configure the directory via web user interface:
1. Click on Directory->Setting.
2. In the Directory block, select the desired list from the Disabled column and then
click .
All custom ring tone files must be within 100KB. Uploading custom ring tones for your
phone is configurable via web user interface only.
Customizing Your Phone
35
The selected list appears in the Enabled column.
3. Repeat the step 2 to add more lists to the Enabled column.
4. To remove a list from the Enabled column, select the desired list and then click .
5. Click Confirm to accept the change.
Note
To check directory via phone user interface:
1. Tap when the phone is idle.
- If there is only one list is enabled for the directory, tap to view the list
directly.
Directory is configurable via web user interface only.
If the remote phone book and LDAP are not configured in advance, you cannot view
remote phone book and LDAP lists on the phone user interface. For more information on
remote phone book, refer to Remote Phone Book on page 53. For more information on
LDAP, refer to
Yealink_SIP-T4X_IP_Phone_Family_Administrator_Guide_V72_2
.
User Guide for the SIP-T48G IP Phone
36
- If more than one list is enabled for the directory, tap the desired list you want to
view, and then tap the OK soft key.
The built-in phone directory can store the names and phone numbers of your contacts.
You can store up to 1000 contacts and 48 groups in your phone's local directory. There
are three default groups in the local directory: Company, Family and Friend. You can
add new groups and contacts; edit, delete or search for a contact; or simply dial a
contact number from the local directory.
To add a group to the local directory:
1. Tap .
The IP phone enters the local directory directly as there is only Local Directory in the
directory by default.
If Local Directory is disabled for the directory, tap ->All Contacts or tap ->
Directory ->All Contacts to enter the local directory.
2. Tap Setting.
Customizing Your Phone
37
3. Tap New Group.
4. Enter the desired group name in the highlighted field.
5. Tap to accept the change.
6. Tap to specify a ring tone for the group.
7. Tap the desired ring tone.
If Auto is selected, the contact in this group will use the ring tone specified to the
contact. Otherwise, it then plays the ring tone specified to the account. For more
information on the ring tone for the account, refer to Ring Tones on page 32.
8. Tap the OK soft key to accept the change.
You can also edit or delete the Company, Family, Friend and the new added contact
groups.
To edit a group in the local directory:
1. Tap .
The IP phone enters the local directory directly as there is only Local Directory in the
directory by default.
If Local Directory is disabled for the directory, tap ->All Contacts or tap ->
Directory ->All Contacts to enter the local directory.
User Guide for the SIP-T48G IP Phone
38
2. Tap Setting.
3. Tap the desired group.
4. Tap after the group.
5. Edit the group name in the highlighted field.
6. Tap to accept the change.
To delete a group from the local directory:
1. Tap .
The IP phone enters the local directory directly as there is only Local Directory in the
directory by default.
If Local Directory is disabled for the directory, tap ->All Contacts or tap ->
Directory ->All Contacts to enter the local directory.
2. Tap Setting.
3. Tap the desired group.
4. Tap before the group.
The touch screen prompts the following warning:
5. Tap the OK soft key to confirm the deletion or the Cancel soft key to cancel.
Customizing Your Phone
39
You can add contacts to the local directory in the following ways:
Manually
From call history
From remote phone book
Adding Contacts Manually
To add a contact to the local directory manually:
1. Tap .
The IP phone enters the local directory directly as there is only Local Directory in the
directory by default.
If Local Directory is disabled for the directory, tap ->All Contacts or tap ->
Directory ->All Contacts to enter the local directory.
2. Tap the desired contact group.
3. Tap Add.
4. Enter the name and the office, mobile or other numbers in the corresponding fields.
5. Tap the gray box of the Account field.
6. Tap the desired account from the pull-down list.
If Auto is selected, the phone will use the first available account when placing calls
to the contact from the local directory.
7. Tap the gray box of the Ring field.
8. Tap the desired ring tone from the pull-down list.
If Auto is selected, this contact will use the ring tone assigned to the group.
9. Tap the gray box of the Photo field.
10. Tap the desired photo from the pull-down list.
User Guide for the SIP-T48G IP Phone
40
11. Tap the Save soft key to accept the change or to cancel.
Note
Adding Contacts from Call History
To add a contact to the local directory from the call history:
1. Tap .
2. Tap or to turn pages.
3. Tap after the desired entry.
4. Tap Add.
5. Edit the corresponding fields.
6. Tap the Save soft key to accept the change.
The entry is successfully saved to the local directory.
If the contact has existed in the directory, the touch screen will prompt “Contact name
already existed!”.
Customizing Your Phone
41
Adding Contacts from remote phone book
To add a contact to the local directory from remote phone book:
1. Tap .
The IP phone enters the local directory directly as there is only Local Directory in the
directory by default.
2. Tap Remote Phone Book.
If Remote Phone Book is disabled for the directory, tap ->Directory ->Remote
Phone Book to enter the remote phone book.
3. Tap the desired remote phone book.
The phone connects to load the corporate directory, and then displays corporate
contacts on the touch screen.
4. Tap after the desired corporate contact.
5. Tap Add.
User Guide for the SIP-T48G IP Phone
42
6. Edit the corresponding fields.
7. Tap the Save soft key to save the contact to the local directory.
If the contact has already existed in the local directory, the touch screen will prompt
"Overwrite the original contact?". Tap the OK soft key to overwrite the original
contact in the local directory or the Cancel soft key to cancel.
For more information on remote phone book operation, refer to Remote Phone Book on
page 53.
To edit a contact in the local directory:
1. Tap .
The IP phone enters the local directory directly as there is only Local Directory in the
directory by default.
If Local Directory is disabled for the directory, tap ->All Contacts or tap ->
Directory ->All Contacts to enter the local directory.
2. Tap after the desired contact.
3. Tap the desired field to edit the contact information.
You can tap or to switch the contact you want to edit.
Customizing Your Phone
43
4. Tap the Save soft key to accept the change or to cancel.
To delete a contact from the local directory:
1. Tap .
The IP phone enters the local directory directly as there is only Local Directory in the
directory by default.
If Local Directory is disabled for the directory, tap ->All Contacts or tap ->
Directory ->All Contacts to enter the local directory.
2. Tap after the desired contact.
3. Tap Delete.
The touch screen prompts the following warning:
4. Tap the OK soft key to confirm the deletion or the Cancel soft key to cancel.
To delete all contacts:
1. Tap .
The IP phone enters the local directory directly as there is only Local Directory in the
directory by default.
User Guide for the SIP-T48G IP Phone
44
If Local Directory is disabled for the directory, tap ->All Contacts or tap ->
Directory ->All Contacts to enter the local directory.
2. Tap Setting.
3. Tap the checkbox of Select All.
4. Tap Delete.
The touch screen prompts the following warning:
5. Tap the OK soft key to confirm the deletion or the Cancel soft key to cancel.
To upload a new custom photo for a contact via web user interface:
1. Click on Directory->Local Directory.
2. Click Browse, and then locate a photo file from your local computer.
Customizing Your Phone
45
3. Click Upload Photo to upload the photo.
You can click Delete Photo to delete the custom photo.
Note
To change the custom photo for the contact via web user interface:
1. Click on Directory->Local Directory.
2. Click the desired entry you want to edit.
3. Select the desired photo from the pull-down list of Photo.
4. Click Edit to accept the change.
When you place a call to the contact or receive a call from the contact, the touch screen
will display the contact photo.
The phone only supports the *.png, *.jpg and .bmp format files. The file size must be less
than 5M.
You can only delete the custom photo.
User Guide for the SIP-T48G IP Phone
46
To place a call to a contact from the local directory:
1. Tap .
The IP phone enters the local directory directly as there is only Local Directory in the
directory by default.
If Local Directory is disabled for the directory, tap ->All Contacts or tap ->
Directory ->All Contacts to enter the local directory.
2. Tap the desired contact.
- If only one number of the contact is stored in the local directory, the contact
number will be dialed out.
- If multiple numbers of the contact are stored in the local directory, the touch
screen will prompt:
Tap the desired number.
The tapped number is dialed out.
Customizing Your Phone
47
To search for a contact in the local directory:
1. Tap .
The IP phone enters the local directory directly as there is only Local Directory in the
directory by default.
If Local Directory is disabled for the directory, tap ->All Contacts or tap ->
Directory ->All Contacts to enter the local directory.
2. Tap Search.
3. Enter a few continuous characters of the contact name or the contact number using
the keypad.
The contacts whose name or phone number matches the characters entered will
appear on the touch screen. You can dial from the result list.
You can search for a contact from the desired lists when the phone is in the pre-dialing
screen. The lists can be Local Directory, History, Remote Phone Book and LDAP.
To configure search source list in dialing via web user interface:
1. Click on Directory->Setting.
2. In the Search Source List In Dialing block, select the desired list from the Disabled
column and click .
The selected list appears in the Enabled column.
3. Repeat step 2 to add more lists to the Enabled column.
4. (Optional.) To remove a list from the Enabled column, select the desired list and
then click .
User Guide for the SIP-T48G IP Phone
48
5. To adjust the display order of the enabled list, select the desired list, and click
or .
6. Click Confirm to accept the change.
The touch screen will display the search results in the adjusted order.
Note
To search for an entry in the enabled search source lists:
1. Pick up the handset, press the speakerphone key or tap the line key.
2. Enter a few continuous characters of the entry’s name or the entry’s phone number.
The entries in the enabled search source lists whose name or phone number
matches the characters entered will appear on the touch screen.
You can tap the desired entry to place a call to the entry.
Search source list in dialing is configurable via web user interface only.
Customizing Your Phone
49
You can manage your phone’s local directory via phone user interface or web user
interface. But you can only import or export the contact list via web user interface.
To import an XML file of contact list via web user interface:
1. Click on Directory->Local Directory.
2. Click Browse to locate a contact list file (file format must be *.xml) from your local
system.
3. Click Import XML to import the contact list.
The web user interface prompts "The original contact will be covered, Continue?".
4. Click OK to complete importing the contact list.
To import a CSV file of contact list via web user interface:
1. Click on Directory->Local Directory.
2. Click Browse to locate a contact list file (file format must be *.csv) from your local
system.
3. (Optional.)Check the Show Title checkbox.
User Guide for the SIP-T48G IP Phone
50
It will prevent importing the title of the contact information which is located in the
first line of the CSV file.
4. Click Import CSV to import the contact list.
5. (Optional.) Mark the On radio box in the Delete Old Contacts field.
It will delete all existing contacts while importing the contact list.
6. (Optional.) Select the contact information you want to import into the local directory
from the pull-down list of Index.
7. Click Import to complete importing the contact list.
Customizing Your Phone
51
To export a contact list via web user interface:
1. Click on Directory->Local Directory.
2. Click Export XML (or Export CSV).
3. Click Save to save the contact list to your local system.
Note
The built-in phone directory can store the names and phone numbers for a blacklist. You
can store up to 30 contacts; add, edit, delete or search for a contact in the blacklist
directory; even call a contact from the blacklist directory, but incoming calls from the
blacklist directory contacts will be rejected automatically.
To add a contact to the blacklist directory manually:
1. Tap .
The IP phone enters the local directory directly as there is only Local Directory in the
directory by default.
2. Tap Blacklist.
If Local Directory is disabled for the directory, tap ->Directory ->Blacklist to
enter the blacklist directory.
3. Tap Add.
Importing/exporting contact lists is available via web user interface only.
User Guide for the SIP-T48G IP Phone
52
4. Enter the name and the office, mobile or other numbers in the corresponding fields.
5. Tap the gray box of the Account field.
6. Tap the desired account from the pull-down list.
If Auto is selected, the phone will use the first available account when placing calls
to the contact from the blacklist directory.
7. Tap the Save soft key to accept the change or to cancel.
To add a contact to the blacklist directory from the local directory:
1. Tap .
The IP phone enters the local directory directly as there is only Local Directory in the
directory by default.
If Local Directory is disabled for the directory, tap ->All Contacts or tap ->
Directory ->All Contacts to enter the local directory.
2. Tap after the desired contact.
3. Tap Blacklist.
The touch screen prompts the following warning:
4. Tap the OK soft key to confirm the setting.
For operating instructions on editing, deleting, placing calls to and searching for
contacts in the blacklist directory, refer to the operating instructions of Local Directory on
Customizing Your Phone
53
page 36.
You can add local contacts, search for a contact, or simply dial a contact number from
the corporate directory.
You can configure your new phone to access up to 5 corporate directories. The phone
supports up to 5000 corporate directory entries. For the access URL of the corporate
directory, contact your system administrator.
To configure an access URL for remote phone book via web user interface:
1. Click on Directory->Remote Phone Book.
2. Enter the access URL in the Remote URL field.
3. Enter the name in the Display Name field.
4. Click Confirm to accept the change.
Note
To access your corporate directory via phone user interface:
1. Tap ->Remote Phone Book.
2. Tap the desired remote phone book.
An access URL for remote phone book is configurable via web user interface only.
User Guide for the SIP-T48G IP Phone
54
The phone connects to load the corporate directory, and then displays corporate
contacts on the touch screen.
You can tap to back to the previous interface.
To search for a contact in the corporate directory:
1. Tap ->Remote Phone Book.
2. Tap Search.
3. Enter a few continuous characters of the contact name or continuous numbers of the
contact number using the keypad.
The contacts whose name or phone number matches the characters entered will
appear on the touch screen. You can place a call from the result list.
To place a call from the corporate directory:
1. Tap ->Remote Phone Book.
2. Tap the desired remote phone book to load the corporate directory.
3. Tap the desired contact in the corporate directory.
In addition, you can enable the phone to present the caller identity stored in the
corporate directory when receiving a call.
Customizing Your Phone
55
To enable the presentation of caller identity stored in remote phone book via web user
interface:
1. Click on Directory->Remote Phone Book.
2. Select Enabled from the pull-down list of Search Remote Phonebook Name.
3. Enter the refresh period in the Search Flash Time (Seconds) field.
The default value is 21600 seconds.
4. Click Confirm to accept the change.
The SIP-T48G IP phone maintains call history lists of Missed calls, Placed calls, Received
calls and Forwarded calls. Call history lists support 400 entries in all. You can view the
call history, place a call, add a contact or delete an entry from the call history list. You
should enable history record in advance.
To enable history record via phone user interface:
1. Tap ->Call Features->General.
2. Tap the On radio box of the History Record field.
3. Tap the Save soft key to accept the change or to cancel.
User Guide for the SIP-T48G IP Phone
56
To view the call history:
1. Tap .
The touch screen displays all call records.
2. Tap or to turn pages.
You can also press or to switch pages.
You can tap Missed, Placed, Received or Forwarded to view entries in each call list
directly.
3. Tap after the desired entry.
The detailed information of the entry appears on the touch screen.
To place a call from the call history list:
1. Tap .
The touch screen displays all call records.
2. Tap or to turn pages.
You can also press or to switch pages.
You can tap Missed, Placed, Received or Forwarded to view entries in each call list
directly.
3. Tap the desired entry.
Customizing Your Phone
57
To add a contact to the blacklist directory from the call history list:
1. Tap .
The touch screen displays all call records.
2. Tap or to turn pages.
You can also press or to switch pages.
You can tap Missed, Placed, Received or Forwarded to view entries in each call list
directly.
3. Tap after the desired entry.
4. Tap Blacklist.
5. Enter the desired values in the corresponding fields.
6. Tap the Save soft key.
For more information, refer to Contact Management on page 34.
To delete an entry from the call history list:
1. Tap .
The touch screen displays all call records.
2. Tap or to turn pages.
You can also press or to switch pages.
You can tap Missed, Placed, Received or Forwarded to view entries in each call list
directly.
3. Tap after the desired entry.
4. Tap Delete.
User Guide for the SIP-T48G IP Phone
58
The touch screen prompts the following warning:
5. Tap the OK soft key to confirm the deletion or the Cancel soft key to cancel.
To delete all entries from the call history list:
1. Tap .
The touch screen displays all call records.
2. Tap or to turn pages.
You can also press or to switch pages.
You can tap Missed, Placed, Received or Forwarded to view entries in each call list
directly.
3. Tap Setting.
4. Tap the checkbox of Select All.
5. Tap Delete.
Customizing Your Phone
59
The touch screen prompts the following warning:
6. Tap the OK soft key to confirm the deletion or the Cancel soft key to cancel.
If you want to use a wired headset, physically connect your headset and activate the
headset mode for use. For more information on physically connecting a headset, refer
to Phone Installation on page 11.
If you want to use a wireless headset, insert the Bluetooth USB dongle BT40 into the USB
port on the back of the phone. For more information on using a Bluetooth headset, refer
to Bluetooth Headset on page 61.
This section provides the introduction of the wired headset.
Note
To activate the headset mode:
1. Press on the phone.
The HEADSET key LED illuminates solid green, and the icon appears on the
status bar of the touch screen when the headset mode is activated. When you tap
the line key or the Answer soft key to answer an incoming call, the call is connected
to your headset automatically. For more information on using the headset to answer
a call, refer to Answering Calls on page 90.
With the handset on-hook, enter the desired number and tap the Send soft key, then
the phone will place a call using the headset automatically. For more information on
If both a Bluetooth headset and a wired headset are connected, only the Bluetooth
headset can be used.
User Guide for the SIP-T48G IP Phone
60
using the headset to place a call, refer to Placing Calls on page 88.
To deactivate the headset mode:
1. Press again on the phone.
The HEADSET key LED goes out, and the icon disappears from the touch screen
when the headset mode is deactivated.
You can use headset in priority when enabling headset prior. This feature is especially
useful for permanent or full-time headset users.
To enable headset prior via web user interface:
1. Click on Features->General Information.
2. Select Enabled from the pull-down list of Headset Prior.
3. Click Confirm to accept the change.
To use headset prior, you should activate the headset mode in advance:
1. Physically connect the headset.
2. Press to activate the headset mode.
Note
If headset prior is enabled, the headset mode will not be deactivated until you press the
HEADSET key again.
Headset prior is configurable via web user interface only.
Customizing Your Phone
61
You can use two headsets when enabling dual headset. To use this feature, you must
physically connect headsets to the headset jack and handset jack respectively. Once
the phone connects to a call, the headset connected to the headset jack will have
full-duplex capabilities, while the one connected to the handset jack will only be able to
listen.
To enable dual headset via web user interface:
1. Click on Features->General Information.
2. Select Enabled from the pull-down list of Dual-Headset.
3. Click Confirm to accept the change.
Note
The SIP-T48G IP phone supports Bluetooth. Bluetooth enables low-bandwidth wireless
connections within a range of 10 meters (32 feet). The best performance is in the 1- to
2-meter (3- to 6-foot) range.
You can activate/deactivate the Bluetooth mode, and then pair and connect the
Bluetooth headset with your phone. You can also disconnect and delete your Bluetooth
headset from the phone.
Note
Dual headset is configurable via web user interface only.
Ensure that the Bluetooth USB dongle BT40 is properly connected into the USB port on the
back of the phone. For more information, refer to Phone Installation on page 11.
User Guide for the SIP-T48G IP Phone
62
To activate the Bluetooth mode via phone user interface:
1. Tap ->Basic->Bluetooth.
2. Tap the On radio box of the Bluetooth field.
The IP phone scans the available Bluetooth headset automatically.
The touch screen displays the Bluetooth icon and the Bluetooth device
information (device name and MAC address).
Before you pair a Bluetooth headset, check the indicator on the Bluetooth headset to
make sure the Bluetooth headset is discoverable. For more information, refer to the
documentation from the Bluetooth headset manufacturer.
To pair and connect your Bluetooth headset to your phone:
1. Tap ->Basic->Bluetooth.
2. Tap the found Bluetooth device to connect the Bluetooth headset to your phone.
Customizing Your Phone
63
When there is no found Bluetooth devices on the touch screen, tap the Scan soft key
to search the Bluetooth device.
The phone prompts you to enter the password.
3. Enter the PIN in the Password field.
The default PIN is “0000”.
4. Tap the OK soft key.
After a while, the Bluetooth headset is automatically connected to your phone. The
touch screen displays as below:
User Guide for the SIP-T48G IP Phone
64
The Bluetooth icon appears on the touch screen.
With the Bluetooth headset paired and connected, you can use the Bluetooth headset
to place and answer calls. For more information, refer to the documentation from the
Bluetooth headset manufacturer.
Auto connection feature enables or disables the phone to connect with the Bluetooth
headset automatically. This feature is enabled by default.
To disable auto connection feature via phone user interface:
1. Tap ->Basic->Bluetooth.
The touch screen displays the paired and connected Bluetooth headset.
2. Tap after the desired Bluetooth headset.
Customizing Your Phone
65
3. Tap the Off radio box of the Auto Connect field.
To change the priority of paired Bluetooth devices：
1. Tap ->Basic->Bluetooth.
2. Tap after the desired Bluetooth headset.
3. Tap Move Up or Move Down from the prompt list.
The top one has the highest priority. When there is no Bluetooth headset connected,
the phone will automatically connect to a Bluetooth headset with the highest
priority.
You can disconnect the Bluetooth headset from your phone. When you disconnect the
Bluetooth headset, it still displays in the Bluetooth Devices list. You can easily connect it
to your phone again.
To disconnect your Bluetooth headset from your phone:
1. Tap ->Basic->Bluetooth.
2. Tap the connected Bluetooth headset.
The Bluetooth headset is disconnected. To connect it to your phone again, tap the
Bluetooth headset again.
You can delete your Bluetooth headset from your phone. When you delete the Bluetooth
headset, it disappears from the Bluetooth Devices list. To connect it to your phone again,
User Guide for the SIP-T48G IP Phone
66
you need to scan and connect it again.
To delete your Bluetooth headset from your phone:
1. Tap ->Basic->Bluetooth.
2. Tap after the desired Bluetooth headset you want to delete.
3. Tap the Delete soft key from the prompt list.
The touch screen prompts the following warning “Delete the selected item?”.
4. Tap the OK soft key to confirm the deletion or the Cancel soft key to cancel.
You can also delete all headsets by tapping the Delete All soft key.
Note
To deactivate the Bluetooth mode via phone user interface:
1. Tap ->Basic->Bluetooth.
If you cannot connect a Bluetooth headset to the phone successfully, we recommend you
to delete the Bluetooth headset in the Bluetooth Devices list (if existed) before pairing it.
Customizing Your Phone
67
2. Tap the Off radio box of the Bluetooth field.
The Bluetooth icon disappears from the touch screen.
Bluetooth mode is configurable via web user interface at the path Features->Bluetooth.
Two types of DSS keys: Line Keys and Programmable Keys. Details will be introduced in
the following. The SIP-T48G IP phone supports 30 line keys.
You can assign predefined functionalities to line keys. You can also define a label for line
key feature which will appear on the touch screen. Line keys allow you to quickly access
features such as call return and voice mail. The line key can indicate the monitored
status when the line keys are assigned with particular features, such as BLF. The default
key type of line key 1-6 is Line. The default key type of line key 30 is DSS Key, which
provides a quick access to the line key configuration screen. You can also tap the line
keys 1-11 on the idle screen to enter into the line key configuration screen directly.
To assign functionality to the line key via phone user interface:
1. Tap ->Call Features->DSS Keys.
2. Tap the desired line key.
3. Select the desired key type from the Type field.
4. (Optional.) Select the desired key event type from the Key Event field.
5. (Optional.) Select the desired line from the Account ID field.
6. (Optional.) Enter a label that will appear on the touch screen in the Label field.
7. (Optional.) Enter the corresponding value in the Value field.
8. (Optional.) Enter the corresponding value in the Extension field.
This option is only applicable to BLF feature. For more information, refer to Busy
Lamp Field (BLF) on page 125.
User Guide for the SIP-T48G IP Phone
68
9. Tap the Save soft key to accept the change or to cancel.
You can also tap the line key 30 (DSS Key), and then tap the desired line key to assign
functionality to it.
Line key features are explained in the following subchapters in detail:
Line
Speed Dial
Voice Mail
Directed Pickup
Group Pickup
DTMF
Prefix
Local Group
XML Group
XML Brower
LDAP
Conference
Forward
Transfer
Hold
DND
Group Listening
Zero Touch
URL
Directory
For more information, contact your system administrator.
Line
You can use this key feature to accept the incoming calls, place active calls on hold or
resume a held call. It performs the same as a hard line key.
Dependencies:
Type (Line)
Account ID (the account this feature will be applied to)
Usage: When the phone receives an incoming call,
1. Tap the line key to accept the incoming call.
2. Tap the line key to place the active call on hold.
3. Tap the line key again to resume the held call.
Customizing Your Phone
69
Speed Dial
You can use this key feature to speed up dialing the numbers often used or hard to
remember.
Dependencies:
Type (Speed Dial)
Account ID (the account this feature will be applied to)
Label (key label displayed on the touch screen)
Value (the number you want to dial out)
Usage: Tap the speed dial key to dial out the number specified in the Value field, using
the account selected from the Account ID field.
Voice Mail
You can use this key feature to connect voice mail quickly. For more information, refer to
Voice Mail on page 140.
Dependencies:
Type (Key Event)
Key Event (Voice Mail)
Account ID (the account this feature will be applied to)
Label (key label displayed on the touch screen)
Value (the voice mail access code)
Usage: Tap the voice mail key to dial out the voice mail access code, you can follow the
voice prompt to listen to the voice mails.
Directed Pickup
You can use this key feature to answer someone else’s incoming call on the phone.
Dependencies:
Type (Key Event)
Key Event (Directed Pickup)
Account ID (the account this feature will be applied to)
Label (key label displayed on the touch screen)
Value (the directed pickup code followed by the specific phone
number)
Usage: Tap the directed pickup key on your phone when the specific phone number
receives an incoming call. The call is answered on your phone.
Group Pickup
You can use this key feature to answer incoming calls in a group that is associated with
their own group.
Dependencies:
Type (Key Event)
Key Event (Group Pickup)
Account ID (the account this feature will be applied to)
Label (key label displayed on the touch screen)
User Guide for the SIP-T48G IP Phone
70
Value (the group pickup code)
Usage: Tap the group pickup key on your phone when a phone number in the group
receives an incoming call. The call is answered on your phone.
DTMF
You can use this key feature to send the specification of arbitrary key sequences via
DTMF.
Dependencies:
Type (Key Event)
Key Event (DTMF)
Label (key label displayed on the touch screen)
Value (DTMF sequence)
Note
Usage: Tap the DTMF key during an active call to send the key sequence specified in the
Value field.
Prefix
You can use this key feature to add a specified prefix number before the dialing number.
Dependencies:
Type (Key Event)
Key Event (Prefix)
Label (key label displayed on the touch screen)
Value (the prefix number)
Usage: Tap the prefix key when the phone is idle, then the phone will enter into the
pre-dialing screen and display the prefix number which you specified in the Value field.
You can enter other digits and then dial out.
Local Group
You can use this key feature to access the contact group in the local directory quickly.
For more information, refer to Local Directory on page 36.
Dependencies:
Type (Key Event)
Key Event (Local Group)
Local Group (the contact group name you want to access)
Label (key label displayed on the touch screen)
Usage: Tap the local group key to access the contact group specified in the Local Group
field.
XML Group
You can use this key feature to access remote group in your corporate directory quickly.
You should configure remote phone book in advance. For more information, refer to
Remote Phone Book on page 53.
DTMF sequence can only contain "0-9", "*", "#" and "A-D".
Customizing Your Phone
71
Dependencies:
Type (Key Event)
Key Event (XML Group)
XML Group (the remote group name you want to access if remote
phone book is configured)
Label (key label displayed on the touch screen)
Usage: Tap the XML group key to access the remote group specified in the XML Group
field.
XML Browser
You can use this key feature to access the XML browser quickly. The XML browser allows
you to create custom services which meet your functional requirements on the server.
You can customize practical applications, such as weather report, stock information,
Google search, etc.
Dependencies:
Type (Key Event)
Key Event (XML Browser)
Label (key label displayed on the touch screen)
Value (the access URL for XML browser)
Usage: Tap the XML browser key to access the XML browser specified in the Value field.
LDAP
You can use this key feature to access the LDAP search interface quickly.
Dependencies:
Type (Key Event)
Key Event (LDAP)
Label (key label displayed on the touch screen)
Usage:
1. Tap the LDAP key to access the LDAP search interface.
2. Enter a few continuous characters of the contact name or continuous numbers of the
contact number using the keypad.
The contacts whose name or phone number matches the characters entered will
appear on the touch screen.
Conference
You can use this key feature to set up a conference call. For more information, refer to
Conference on page 113.
Dependencies:
Type (Key Event)
Key Event (Conference)
Label (key label displayed on the touch screen)
Value (the number you want to add to the conference)
User Guide for the SIP-T48G IP Phone
72
Usage: Tap the conference key during an active call to set up a conference with the
number specified in the Value field.
Note
Forward
You can use this key feature to forward an incoming call to someone else. For more
information, refer to Call Forward on page 104.
Dependencies:
Type (Key Event)
Key Event (Forward)
Label (key label displayed on the touch screen)
Value (the number you want to forward to)
Usage:
1. Tap the forward key to forward an incoming call to the number specified in the
Value field.
2. When call forward is in phone mode, tap the forward key to activate call forward
for the phone.
3. When call forward is in custom mode, tap the forward key to access the custom call
forward interface. You can activate or deactivate call forward for one or all
accounts.
Note
Transfer
You can use this key feature to handle the call differently depending on the transfer
mode on DSS key when there is an active call on the phone.
Dependencies:
Type (Key Event)
Key Event (Transfer)
Label (key label displayed on the touch screen)
Value (the number you want to transfer to)
Usage:
When the transfer mode on DSS key is Blind Transfer, tap the transfer key to
complete the blind transfer to the number specified in the Value field.
When the transfer mode on DSS key is Attended Transfer, tap the transfer key to
dial out the number specified in the Value field, and then perform the attended or
semi-attended transfer.
When the transfer mode on DSS key is New Call, tap the transfer key to place a
If the Value field is left blank, the forward key performs the same as the Forward soft key
when receiving an incoming call.
When leaving the Value field blank, the conference key performs the same as the
Conference soft key during a call.
Customizing Your Phone
73
new call to the number specified in the Value field.
Note
Hold
You can use this key feature to place an active call on hold or retrieve a held call.
Dependencies:
Type (Key Event)
Key Event (Hold)
Label (key label displayed on the touch screen)
Usage:
1. Tap the hold key during an active call to place the call on hold.
2. Tap the hold key again to retrieve the held call.
DND
You can use this key feature to activate or deactivate DND. You can also use this key
feature to access the custom DND screen. For more information, refer to Do Not Disturb
(DND) on page 99.
Dependencies:
Type (Key Event)
Key Event (DND)
Label (key label displayed on the touch screen)
Usage:
When DND is in phone mode:
1. Tap the DND key to activate DND.
2. Tap the DND key again to deactivate DND.
When DND is in custom mode:
1. Tap the DND key to access the custom DND screen. You can activate or deactivate
DND for one or all accounts.
Group Listening
You can use this key feature to activate the Speakerphone and Handset/Headset mode
at the same time. It is suitable for the group conversation which has more than one
person at one side. You are able to speak and listen through the handset/headset,
meanwhile the others nearby can only listen through the speaker.
Dependencies:
Type (Key Event)
Key Event (Group Listening)
Transfer mode via DSS key is configurable via web user interface at the path
Features->Transfer. For more information on how to configure the transfer mode via DSS
key, refer to Busy Lamp Field (BLF) on page 125.
When leaving the Value field blank, the transfer key performs the same as the TRANSFER
key or the Transfer soft key during a call. For more information, refer to Call Transfer on
page 111.
User Guide for the SIP-T48G IP Phone
74
Label (key label displayed on the touch screen)
Usage:
1. During a call, tap the group listening key to activate the group listening mode.
You can then speak and listen through the handset/headset, other people at your
side can listen through speaker at the same time.
2. Tap the group listening key again to deactivate the group listening mode.
Zero Touch
You can use this key feature to configure auto provision and network parameters quickly.
Dependencies:
Type (Key Event)
Key Event (Zero Touch)
Label (key label displayed on the touch screen)
Usage:
1. Tap the zero touch key to access the zero touch screen.
2. Tap the OK soft key within a few seconds.
3. Configure the network parameters in the corresponding fields.
4. Tap the Next soft key.
5. Configure the auto provision parameters in the corresponding fields.
6. Tap the Next soft key.
The phone will reboot to update configurations.
URL
You can use this key feature to trigger the phone to send an HTTP GET request
containing a specific URL.
Dependencies:
Type (URL)
Label (key label displayed on the touch screen)
URL (the URL contained in the HTTP GET request)
Usage: Tap the URL key to trigger the phone to send an HTTP GET request containing the
URL specified in the URL field.
Directory
You can use this key feature to easily access frequently used lists. For more information,
refer to Directory on page 34.
Dependencies:
Type (Key Event)
Key Event (Directory)
Label (key label displayed on the touch screen)
Usage: Tap the directory key to immediately access to frequently used lists.
Note
The directory key performs the same function as the Directory soft key when the phone is
idle.
Customizing Your Phone
75
You can customize the soft keys, navigation keys and function keys.
To customize the programmable keys via web user interface:
1. Click on DSSKey->Programable Key.
2. Customize specific features for these keys.
3. Click Confirm to accept the change.
You can click Reset to default to reset custom settings to defaults.
Note
You can register one or multiple accounts on the SIP-T48G IP phone. You can also
configure each line key to associate with an account or configure multiple line keys to
associate with an account.
To register an account via phone user interface:
1. Tap ->Advanced (password: admin) ->Account.
2. Tap the desired account.
3. Tap the gray box of the Account Status field.
4. Tap Enabled from the pull-down list.
5. Enter the desired values in the Label, Display Name, Register Name, User Name,
Password and SIP Server1/2 fields respectively. Contact your system administrator
Programmable keys are configurable via web user interface only.
User Guide for the SIP-T48G IP Phone
76
for more information.
6. Tap the Save soft key to accept the change or to cancel.
You can repeat steps 2 to 5 to register more accounts.
The following figures show single or multiple accounts registered on the phone:
Single account:
Multiple accounts:
To disable an account via phone user interface:
1. Tap ->Advanced (password: admin) ->Account.
2. Tap the desired account.
3. Tap the gray box of the Account Status field.
4. Tap Disabled from the pull-down list.
5. Tap the Save soft key to accept the change or to cancel.
Account registration is configurable via web user interface at the path
Account->Register.
Customizing Your Phone
77
To configure the default account via phone user interface:
1. Tap ->Call Features->Default Account.
2. Tap the gray box of the Default Account field.
3. Tap the desired account from the pull-down list.
4. Tap the Save soft key to accept the change or to cancel.
The label of the default account is displayed on the left of the status bar. The IP phone
will use this account by default when dialing out.
You can configure multiple line keys to associate with an account. This enhances call
visualization and simplifies call handling.
If this is the case, the touch screen resembles the following figure:
Incoming calls to this account will be distributed evenly among the available line keys.
Outgoing calls will be distributed similarly.
Your phone can be configured to have a combination of accounts with a single line key
and accounts with multiple line keys.
User Guide for the SIP-T48G IP Phone
78
Dial plan is a string of characters that governs the way your SIP-T48G IP phone
processes the inputs received from your phone keypad. The SIP-T48G IP phone supports
the following dial plan features:
Replace Rule
Dial-now
Area Code
Block Out
Basic expression syntaxes you need to know:
Syntax
Description
.
The dot "." can be used as a placeholder or multiple placeholders for
any character. Example:
"12." would match "123", "1234", "12345", "12abc", etc.
x
An "x" can be used as a placeholder for any character. Example:
"12x" would match "121", "122", "123", "12a", etc.
[]
The square brackets "[]" can be used as a placeholder for a single
character which matches any of a set of characters. Example:
"91[5-7]1234" would match "9151234", "9161234", "9171234", etc.
()
The parentheses "( )" can be used to group together patterns, for
instance, to logically combine two or more patterns. Example:
"([1-9])([2-7])3" would match "923", "153", "773",etc.
$
The “$” should be followed by the sequence number of a parenthesis.
The “$” plus the sequence number means the whole character or
characters placed in the parenthesis. The number directs to the right
parenthesis when there are more than one. Example:
A replace rule configuration: Prefix: "9([5-7])(.)", Replace: "5$2". When
you enter "96123" to dial out on your phone, the number will be replaced
as "5123" and then dialed out. “$2” means the characters in the second
parenthesis, that is, “123”.
You can configure one or more replace rules (up to 100) to remove the specified string
and replace it with another string. You can configure a pattern with wildcards (refer to
the expression syntax in the table above), so that any string that matches the pattern
will be replaced. This feature is convenient for you to dial out a long number. For
example, a replace rule is configured as "Prefix: 1" and "Replace: 1234567", when you try
to dial out the number “1234567”, you just need to enter “1” on the phone and then tap
the Send soft key.
Customizing Your Phone
79
To add a replace rule via web user interface:
1. Click on Settings->Dial Plan->Replace Rule.
2. Enter the string (e.g., 2xx) in the Prefix field.
3. Enter the string (e.g., 12345) in the Replace field.
4. Enter the desired line ID in the Account field or leave it blank.
5. Click Add to add the replace rule.
When you enter the number “234” using the keypad and then tap the Send soft key,
the phone will dial out “12345” instead.
Note
To edit a replace rule via web user interface:
1. Click on Settings->Dial Plan->Replace Rule.
2. Select the desired replace rule by checking the checkbox.
3. Edit the values in the Prefix and Replace fields.
4. Enter the desired line ID in the Account field or leave it blank.
5. Click Edit to accept the change.
To delete one or more replace rules via web user interface:
1. Click on Settings->Dial Plan->Replace Rule.
2. Select one or more replace rules by checking the checkbox(es).
Valid values of Account field can be one or more digits among 1, 2, 3, 4, 5 and 6. Every
two digits must be separated by a comma. For example, when you enter the value “1, 2”
in the Account field, this replace rule will apply to account1 and account2.
If you leave the Account field blank or enter 0, then the replace rule will apply to all
accounts.
User Guide for the SIP-T48G IP Phone
80
3. Click Del to delete the replace rule(s).
Note
You can configure one or more dial-now rules (up to 100) on your phone. When the
dialed number matches the dial-now string, the number will be dialed out automatically.
For example, a dial-now rule is configured as "2xx", then any entered three-digit string
beginning with 2 will be dialed out automatically on the phone.
To add a dial-now rule via web user interface:
1. Click on Settings->Dial Plan->Dial-now.
2. Enter the desired value (e.g., 1234) in the Rule field.
3. Enter the desired line ID in the Account field or leave it blank.
For more information on the valid value of the Account field, refer to Replace Rule
on page 78.
4. Click Add to add the dial-now rule.
When you enter the number “1234” using the keypad, the phone will dial out “1234”
automatically without pressing any key.
Note
Delay Time for Dial-Now Rule
You can configure the delay time for dial-now rules. That is, you can configure your
Replace rule is configurable via web user interface only.
You can also edit or delete the dial-now rule, refer to Replace Rule on page 78 for more
information.
Dial-now rule is configurable via web user interface only.
Customizing Your Phone
81
phone to dial out the phone number automatically, which matches a dial-now rule, after
the specified delay time.
To configure the delay time for dial-now rule via web user interface:
1. Click on Features->General Information.
2. Enter the time within 1-14 (in seconds) in the Time-Out for Dial-Now Rule field.
The default value is 1.
3. Click Confirm to accept the change.
Note
Area codes are also known as Numbering Plan Areas (NPAs). They usually indicate
geographical areas in a country. This feature is necessary only when dialing the number
outside the code area. For example, area code is configured as "Code: 011, Min Length:
4, Max Length: 11". When you dial out the number "56789" (the length of the number is
between 4 and 11), the phone will add the area code and dial out the number
"01156789".
To configure the area code and lengths via web user interface:
1. Click on Settings->Dial Plan->Area Code.
2. Enter the desired values in the Code, Min Length (1-15) and Max Length (1-15)
fields.
3. Enter the desired line ID in the Account field or leave it blank.
Delay time for dial-now rule is configurable via web user interface only.
User Guide for the SIP-T48G IP Phone
82
For more information on the valid value of the Account field, refer to Replace Rule
on page 78.
4. Click Confirm to accept the change.
Note
You can block some specific numbers (up to 10) from being dialed on your phone. When
you dial a block out number on your phone, the dialing will fail and the touch screen will
prompt "Forbidden Number".
To add a block out number via web user interface:
1. Click on Settings->Dial Plan->Block Out.
2. Enter the desired value in the BlockOut Number field.
3. Enter the desired line ID in the Account field or leave it blank.
The default values of minimum and maximum length are 1 and 15 respectively.
Area code is configurable via web user interface only.
Customizing Your Phone
83
For more information on the valid value of the Account field, refer to Replace Rule
on page 78.
4. Click Confirm to add the block out number.
Note
You can enable live dialpad on the SIP-T48G IP phone, which enables the IP phone to
automatically dial out the phone number without pressing any other key. You can also
configure a delay, where the phone will dial out the phone number automatically after
the specified period of time.
To enable the live dialpad via web user interface:
1. Click on Settings->Preference.
2. Select Enabled from the pull-down list of Live Dialpad.
Block out number is configurable via web user interface only.
User Guide for the SIP-T48G IP Phone
84
3. Enter the desired delay time in the Inter Digit Time (1~14s) field.
The default delay time is 4s.
4. Click Confirm to accept the change.
Note
You can dial a hotline number immediately upon lifting the handset, pressing the
speakerphone key or tapping the line key. You can also configure a delay, where the
phone will dial out the hotline number automatically after the specified period of time.
To configure the hotline number via phone user interface:
1. Tap ->Call Features-> Hotline.
2. Enter the desired number in the Number field.
3. Enter the desired delay time in the Hotline Delay 0-10(s) field.
4. Tap the Save soft key to accept the change or to cancel.
Live dialpad is configurable via web user interface only.
Customizing Your Phone
85
Hotline is configurable via web user interface at the path Features->General
Information.
User Guide for the SIP-T48G IP Phone
86
Basic Call Features
87
The SIP-T48G IP phone is designed to be easily used like a regular phone on a public
switched telephone network (PSTN). You can place calls, answer calls, transfer a call to
someone else, or conduct a conference call.
This chapter provides basic operating instructions for the SIP-T48G IP phone. Topics
include:
Placing Calls
Answering Calls
Ending Calls
Redialing Numbers
Recent Call In Dialing
Auto Answer
Auto Redial
Call Completion
Call Return
Call Mute
Call Hold/Resume
Do Not Disturb (DND)
Call Forward
Call Transfer
Call Waiting
Conference
Call Park
Call Pickup
Anonymous Call
Anonymous Call Rejection
If you require additional information or assistance with your new phone, contact your
system administrator.
User Guide for the SIP-T48G IP Phone
88
You can place a call in three ways using your SIP-T48G IP phone:
Using the handset
Using the speakerphone
Using the headset
You can also dial the number first, and then choose the way you want to speak to the
other party.
You can also search and dial a contact from the call history, local directory or remote
phone book. For more information, refer to Contact Management on page 34 and Call
History Management on page 55.
During a call, you can alternate between Speakerphone, Headset, and Handset modes
by pressing the Speakerphone key, the HEADSET key, or picking up the handset.
The call duration of call is visible on the touch screen. In the figure below, the call to ”Lin”
has lasted 37 seconds.
To place a call using the handset:
1. Pick up the handset.
2. Enter the desired number using the keypad.
Basic Call Features
89
You can enter the number using the keypad displayed on the touch screen. You can
also tap the History soft key or the Directory soft key to search for an entry, and then
place a call.
3. Press , , or tap the Send soft key.
The # key is configured as a send key by default. You can also set the * key as the send
key, or set neither. For more information, refer to the Key as Send on page 31.
Note
To place a call using the hands-free speakerphone mode:
Do one of the following:
- With the handset on-hook, press or tap the line key to obtain a dial tone.
Enter the desired number using the keypad or the on-screen keypad.
Press , or tap the Send soft key.
- With the handset on-hook, enter the desired number using the keypad or the
on-screen keypad.
Press , , or tap the Send soft key.
To place a call using the headset:
Do one of the following:
- With the optional headset connected, press to activate the headset mode.
Tap the line key to obtain a dial tone.
Enter the desired number using the keypad or the on-screen keypad.
Press , , or tap the Send soft key.
You can also dial using the SIP URI or IP address. To obtain the IP address of a phone,
press the OK key. The maximum SIP URI or IP address length is 32 characters. For
example, SIP URI: 3606@sip.com, IP: 192.168.1.15.
Your phone may not support direct IP dialing. Contact your system administrator for more
information.
User Guide for the SIP-T48G IP Phone
90
- With the optional headset connected, press to activate the headset mode.
Enter the desired number using the keypad or the on-screen keypad.
Press , , or tap the Send soft key.
Note
To place multiple calls:
You can have more than one call on your SIP-T48G IP phone. To place a new call during
an active call, do one of the following:
- Tap the line key. The active call is placed on hold.
Enter the desired number using the keypad or the on-screen keypad.
Press , , or tap the Send soft key.
- Press or tap the Hold soft key to place the original call on hold.
Tap the New Call soft key.
Enter the desired number using the keypad or the on-screen keypad.
Press , , or tap the Send soft key.
You can tap the desired call, and then tap the Resume soft key to retrieve it.
When you are not in another call, you can answer a call in three ways:
Using the handset
Using the speakerphone
Using the headset
Note
Answering When Not in Another Call
Call duration and destination will always appear on the touch screen for the active call.
To answer a call using the handset:
1. Pick up the handset.
You can ignore incoming calls by pressing the X key or tapping the Reject soft key or the
Silence soft key. You can also activate Do Not Disturb mode to ignore the incoming calls
without ring on your phone. For more information, refer to Do Not Disturb (DND) on page
99.
You can forward incoming calls to someone else by tapping the Forward soft key. For
more information, refer to Call Forward on page 104.
To permanently use the headset mode, refer to Headset Prior on page 60.
Basic Call Features
91
To answer a call using the hands-free speakerphone mode:
Do one of the following:
- Press .
- With the handset on-hook and the headset mode deactivated, tap the Answer soft
key.
- With the handset on-hook and the headset mode deactivated, tap the line key (the
line key illuminates green).
To answer a call using the headset:
Do one of the following:
- Press .
- With the headset mode activated, tap the Answer soft key.
- With the headset mode activated, tap the line key (the line key illuminates green).
Answering When in Another Call
If you have an active call, and an incoming call arrives on the phone, do one of the
following:
- Tap the Answer soft key.
The incoming call is answered and the original call is placed on hold.
- Press to access the new call.
Press or tap the Answer soft key.
The incoming call is answered and the original call is placed on hold.
To end a call:
Do one of the following:
- If you are using the handset, tap the End Call soft key or hang up the handset.
- If you are using the headset, tap the End Call soft key.
- If you are using the speakerphone, press or tap the End Call soft key.
Note
To end a call placed on hold, you can tap the End Call soft key to end the call directly, or
tap the Resume soft key to resume the call before ending it.
User Guide for the SIP-T48G IP Phone
92
To redial the last dialed number from your phone:
1. Press twice.
A call to your last dialed number is attempted.
To redial a previously dialed number from your phone:
1. Press when the phone is idle.
2. Tap the desired entry from the placed calls list.
To view the placed calls list when the phone is in the pre-dialing interface, you should
enable recent call in dialing in advance.
To enable recent call in dialing via web user interface:
1. Click on Directory->Setting.
2. Select Enabled from the pull-down list of Recent Call In Dialing.
3. Click Confirm to accept the change.
Note
Recent call in dialing is configurable via web user interface only.
Basic Call Features
93
To view placed calls list when the phone is in the pre-dialing interface:
1. Pick up the handset, press the speakerphone key or tap the line key.
The touch screen displays the placed calls list.
You can tap or to scroll through placed calls page by page.
You can use auto answer to automatically answer an incoming call on a line. Auto
answer is configurable on a per-line basis.
To configure auto answer via phone user interface:
1. Tap ->Call Features->Auto Answer.
2. Tap the On radio box of the desired line.
3. Tap the Save soft key to accept the change or to cancel.
User Guide for the SIP-T48G IP Phone
94
The icon appears on the touch screen.
Auto answer is configurable via web user interface at the path Account->Basic.
Note
You can enable auto redial to redial the phone number automatically when the called
party is busy. You can also configure the times settings for auto redial and the time to
wait between redial attempts.
To configure auto redial via phone user interface:
1. Tap ->Call Features->Auto Redial.
2. Tap the On radio box of the Auto Redial field.
3. Enter the desired time (in seconds) in the Redial Interval field.
The default time interval (in seconds) is 10.
4. Enter the desired times in the Redial Times field.
The default value is 10.
Auto answer is only applicable when there is no other call in progress on the phone.
Basic Call Features
95
5. Tap the Save soft key to accept the change or to cancel.
Auto redial is configurable via web user interface at the path Features->General
Information.
To use auto redial:
When the called party is busy, the touch screen prompts the following:
1. Tap the OK soft key to activate auto redial.
The touch screen prompts the following:
2. Wait for a period of time or tap the OK soft key to redial the phone number.
The phone will retry as many times as configured until the called party is idle.
You can use call completion to notify the caller who failed to reach a desired callee
when the callee becomes available to receive a call.
To enable call completion via phone user interface:
1. Tap ->Call Features->Call Completion.
User Guide for the SIP-T48G IP Phone
96
2. Tap the On radio box of the Call Completion field.
3. Tap the Save soft key to accept the change or to cancel.
Call completion is configurable via web user interface at the path Features->General
Information.
To use call completion:
When the called party is busy, the following prompt will appear on the touch screen of
the phone:
1. Tap the OK soft key, the phone returns to the idle screen and call completion is
activated.
Basic Call Features
97
2. When the called party becomes idle, the touch screen prompts the following:
3. Tap the OK soft key to redial the number.
Note
You can tap a call return key to place a call back to the last incoming call.
To configure a call return key via phone user interface:
1. Tap the DSS Key key.
2. Tap the desired line key.
3. Tap the gray box of the Type field.
4. Tap Key Event from the pull-down list.
5. Tap the gray box of the Key Event field.
6. Tap Call Return from the pull-down list.
7. (Optional.) Enter a label that will appear on the touch screen in the Label field.
Call completion is not available on all servers. For more information, contact your system
administrator.
User Guide for the SIP-T48G IP Phone
98
8. Tap the Save soft key to accept the change or to cancel.
9. Tap the DSS Key key to return to the idle screen.
Call return key is configurable via web user interface at the path DSSKey->Line key.
You can mute the microphone of the active audio device during an active call, and then
the other party cannot hear you.
To mute a call:
1. Press during an active call.
The touch screen indicates that the call is on mute. The mute key LED illuminates
solid red when the call is on mute.
To un-mute a call:
1. Press again to un-mute the call.
You can place an active call on hold. Only one active call can be in progress on the
phone at any time. Other calls can be made and received while placing the original
call on hold. When you place a call on hold, your IP PBX may play music on hold to the
other party while waiting.
To place a call on hold:
1. Press or tap the Hold soft key during a call.
Basic Call Features
99
The touch screen indicates that the call is on hold.
The phone will beep softly every 30 seconds to remind you that you still have a call on
hold.
To resume a held call:
1. Press or tap the Resume soft key.
Multiple Calls on Hold:
If multiple calls are placed on hold, do one of the following:
- Tap the desired call, and then tap the Resume soft key to retrieve it.
- Tap the desired call, and then tap the corresponding line key to retrieve it.
You can use DND to reject incoming calls automatically on the phone. Callers will
receive a busy message.
You can enable/disable DND for the phone system, or you can customize DND for each
or all accounts. Two DND modes:
Phone (default): DND is effective for the phone system.
Custom: DND can be configured for each or all accounts.
You can receive incoming calls from authorized numbers when DND is enabled.
To configure the DND mode via web user interface:
1. Click on Features->Forward & DND.
User Guide for the SIP-T48G IP Phone
100
2. In the DND block, mark the desired radio box in the Mode field.
3. Click Confirm to accept the change.
Note
To activate DND in phone mode:
1. Tap .
The icon on the status bar indicates that DND is enabled.
DND mode is configurable via web user interface only.
Basic Call Features
101
Incoming calls will be rejected automatically and "n New Missed Call(s)" ("n"
indicates the number of the missed calls) will appear on the touch screen.
To activate DND in custom mode for a specific account:
1. Tap .
The touch screen displays a list of accounts registered on the phone.
2. Tap the desired account.
3. Tap the On radio box of the Status field.
User Guide for the SIP-T48G IP Phone
102
4. Tap the Save soft key to accept the change.
The icon appears on the status bar, and the associated line icon changes
to .
Incoming calls on the specific line will be rejected automatically, and the touch
screen will prompt "n New Missed Call(s)" ("n" indicates the number of the missed
calls).
To activate DND in custom mode for all accounts:
1. Tap .
The touch screen displays a list of accounts registered on the phone.
2. Tap the All On soft key to activate DND for all accounts.
3. Tap to return to the idle screen.
The icon appears on the status bar, and all line icons change to .
Basic Call Features
103
Incoming calls will be rejected automatically, and the touch screen will prompt "n
New Missed Call(s)" ("n" indicates the number of the missed calls).
Note
To configure the DND authorized numbers via web user interface:
1. Click on Features->Forward & DND.
2. Select Enable from the pull-down list of DND Emergency.
3. Enter the numbers in the DND Authorized Numbers field.
The prompt message displays only if Missed Call Log for the line is enabled. Missed call
log is configurable via web user interface at the path Account->Basic.
Do not disturb is local to the phone, and may be overridden by the server settings. For
more information, contact your system administrator.
User Guide for the SIP-T48G IP Phone
104
For multiple numbers, enter a comma between every two numbers.
4. Click Confirm to accept the change.
When DND is enabled on the phone, the phone can still receive incoming calls from the
numbers specified in the DND Authorized Numbers field.
Note
You can configure your phone to forward incoming calls to another party by the static
forwarding. You can also forward calls while your phone is ringing, refer to the dynamic
forwarding.
Static Forwarding
Three types of static forwarding:
Always Forward: Incoming calls are immediately forwarded.
Busy Forward: Incoming calls are immediately forwarded if the phone is busy.
No Answer Forward: Incoming calls are forwarded if not answered after a period
of time.
DND authorized number is configurable via web user interface only.
Basic Call Features
105
You can enable/disable call forward for the phone system, or you can customize call
forward for each or all accounts. Two call forward modes:
Phone (default): Call forward is effective for the phone system.
Custom: Call forward can be configured for each or all accounts.
To configure the call forward mode via web user interface:
1. Click on Features->Forward & DND.
2. In the Forward block, mark the desired radio box in the Mode field.
3. Click Confirm to accept the change.
Note
To enable call forward in phone mode:
1. Tap ->Call Features->Call Forward or press when the phone is idle.
2. Tap the desired forwarding type
3. Depending on your selection:
a.) If you tap Always Forward:
1) Tap the On radio box of the Always Forward field.
2) Enter the destination number you want to forward all incoming calls to in
Call forward mode is configurable via web user interface only.
User Guide for the SIP-T48G IP Phone
106
the Forward To field.
3) (Optional.) Enter the always forward on code or off code respectively in the
On Code or Off Code field.
b.) If you tap Busy Forward:
1) Tap the On radio box of the Busy Forward field.
2) Enter the destination number you want to forward incoming calls to when
the phone is busy in the Forward To field.
3) (Optional.) Enter the busy forward on code or off code respectively in the
On Code or Off Code field.
c.) If you tap No Answer Forward:
1) Tap the On radio box of the No Answer Forward field.
2) Enter the destination number you want to forward unanswered incoming
calls to in the Forward To field.
3) Tap the gray box of the After Ring Time field.
4) Tap the desired ring time to wait before forwarding from the pull-down list.
The default ring time is 12 seconds.
Basic Call Features
107
5) (Optional.) Enter the no answer forward on code or off code respectively in
the On Code or Off Code field.
4. Tap the Save soft key to accept the change.
The icon on the idle screen indicates the call forward is enabled.
To enable call forward in custom mode:
1. Tap ->Call Features->Call Forward or press when the phone is idle.
The touch screen displays a list of accounts registered on the phone.
2. Tap the desired account.
3. Tap the desired forwarding type.
4. Depending on your selection:
a.) If you tap Always Forward:
1) Tap the On radio box of the Always Forward field.
2) Enter the destination number you want to forward all incoming calls to in
the Forward To field.
3) (Optional.) Enter the always forward on code or off code respectively in the
On Code or Off Code field.
You can also enable always forward for all accounts. Do the following:
User Guide for the SIP-T48G IP Phone
108
1) Tap the All Lines soft key.
The touch screen prompts “Copy to all lines?”.
2) Tap the OK soft key to accept the change or the Cancel soft key to cancel.
b.) If you select Busy Forward:
1) Tap the On radio box of the Busy Forward field.
2) Enter the destination number you want to forward incoming calls to when
the phone is busy in the Forward To field.
3) (Optional.) Enter the busy forward on code or off code respectively in the
On Code or Off Code field.
You can also enable busy forward for all accounts. Do the following:
1) Tap the All Lines soft key.
Basic Call Features
109
The touch screen prompts “Copy to all lines?”.
2) Tap the OK soft key to accept the change or the Cancel soft key to cancel.
c.) If you select No Answer Forward:
1) Tap the On radio box of the No Answer Forward field.
2) Enter the destination number you want to forward unanswered incoming
calls to in the Forward To field.
3) Tap the gray box of the After Ring Time field.
4) Tap the desired ring time to wait before forwarding from the pull-down list.
The default ring time is 12 seconds.
5) (Optional.) Enter the no answer forward on code or off code respectively in
the On Code or Off Code field.
You can also enable no answer forward for all accounts. Do the following:
1) Tap the All Lines soft key.
User Guide for the SIP-T48G IP Phone
110
The touch screen prompts “Copy to all lines?”.
2) Tap the OK soft key to accept the change or the Cancel soft key to cancel.
5. Tap the Save soft key to accept the change.
The icon appears on the idle screen, and the associated line icon changes to .
Call forward is configurable via web user interface at the path Features->Forward &
DND.
Note
To disable call forward in phone mode:
1. Tap ->Call Features->Call Forward or press when the phone is idle.
You can tap the forward key to disable call forward when a forward key is
configured.
2. Tap the desired forwarding type.
You can also enter the SIP URL or IP address in the Forward To field. For more information
on using the SIP URL or IP address, refer to Placing Calls on page 88.
Call forward is local to the phone, and may be overridden by the server settings. Call
forward on code or off code may be different among servers. For more information,
contact your system administrator.
Basic Call Features
111
3. Tap the Off radio box.
4. Tap the Save soft key to accept the change.
To disable call forward in custom mode for a specific account:
1. Tap ->Call Features->Call Forward or press when the phone is idle.
The touch screen displays a list of accounts registered on the phone.
2. Tap the desired account.
3. Tap he desired forwarding type.
4. Tap the Off radio box.
5. Tap the Save soft key to accept the change.
Dynamic Forwarding
To forward an incoming call to another party:
1. When the phone is ringing, tape Forward soft key.
2. Enter the number you want to forward the incoming call to.
3. Press , , or tap the Send soft key.
The touch screen prompts a call forward message.
You can transfer a call to another party in one of the three ways:
Blind Transfer: Transfer a call directly to another party without consulting.
Semi-Attended Transfer: Transfer a call when the target phone is ringing.
Attended Transfer: Transfer a call with prior consulting.
To perform a blind transfer:
1. Press or tap the Transfer soft key during a call.
User Guide for the SIP-T48G IP Phone
112
2. Enter the number you want to transfer the call to.
3. Press or tap the Transfer soft key to complete the transfer.
Then the call is connected to the number to which you are transferring.
To perform a semi-attended transfer:
1. Press or tap the Transfer soft key during a call.
2. Do one of the following:
- Enter the number you want to transfer the call to.
- Tap the Directory soft key, and then tap the desired directory list. Tap the
desired contact to dial out.
- Tap the History soft key, and then tap the desired list. Tap the desired entry to
dial out.
3. Press or tap the Transfer soft key to complete the transfer when receiving
ringback.
To perform an attended transfer:
1. Press or tap the Transfer soft key during a call.
2. Do one of the following:
- Enter the number you want to transfer the call to.
- Tap the Directory soft key, and then tap the desired directory list. Tap the
desired contact to dial out.
- Tap the History soft key, and then tap the desired list. Tap the desired entry to
dial out.
3. After the party answers the call, press or tap the Transfer soft key to complete
the transfer.
If you are using a handset, the transfer can be completed by hanging up the handset.
Basic Call Features
113
You can enable or disable call waiting on the phone. If call waiting is enabled, you can
receive another call when there is an active call on the phone. Otherwise, another
incoming call is automatically rejected by the phone with a busy message when there is
an active call on the phone. You can also enable or disable the phone to play a warning
tone when receiving another call.
To configure call waiting via phone user interface:
1. Tap ->Call Features->Call Waiting.
2. Tap the On radio box of the Call Waiting field.
3. Tap the On radio box of the Play Tone field.
4. (Optional.) Enter the call waiting on code or off code respectively in the On Code or
Off Code field.
5. Tap the Save soft key to accept the change or to cancel.
Call waiting is configurable via web user interface at the path Features->General
Information.
You can use SIP-T48G IP phone to create a conference with two parties using the phone’s
local conference or create a conference with multiple participants called network
conference.
Note
Network conference is not available on all servers. For more information, contact your
system administrator.
User Guide for the SIP-T48G IP Phone
114
The SIP-T48G IP phone supports up to 3 parties (including yourself) in a conference call.
This is the default method of conference called Local Conference.
To set up a local conference call:
1. Place a call to the first party.
2. When the first party answers the call, tap the Conference soft key to place a new
call.
The active call is placed on hold.
3. Enter the number of the second party, and then press , , or tap the Send
soft key.
4. When the second party answers the call, tap the Conference soft key again to join
all parties in the conference.
You can create a conference between an active call and a call on hold by tapping the
Conference soft key.
To join two calls in a conference:
1. Place two calls using two different accounts on the phone (for example, place the
first call using account 1, and then place the second call using account 2).
2. Tap the desired call for conference and make sure the call is active (for example,
tap the call on account 1).
Basic Call Features
115
3. Tap the Conference soft key to join the two calls in the conference on the selected
account.
During the conference call, you can do the following:
- Press or tap the Hold soft key to place the conference call on hold.
- Tap the Split soft key to split the conference call into two individual calls.
- Tap to remove the desired party.
- Press or tap to mute the conference call.
- Tap the End Call soft key to drop the conference call.
You can use network conference feature on the SIP-T48G IP phone to conduct a
conference with multiple participants.
This feature allows you to perform the following:
Join two calls together into a conference call.
Invite another party into an active conference call.
To use this feature, contact your system administrator for the network conference URI in
advance.
To configure network conference via web user interface:
1. Click on Account->Advanced.
2. Select Network Conference from the pull-down list of Conference Type.
User Guide for the SIP-T48G IP Phone
116
3. Enter the conference URI (e.g., conference@example.com) in the Conference URI
field.
4. Click Confirm to accept the change.
Note
To set up a network conference call:
1. Place a call to the first party.
2. Tap the Conference soft key to place a new call.
The active call is placed on hold.
3. Enter the number of the second party and press , , or tap the Send soft
key.
4. When the second party answers the call, tap the Conference soft key to add the
second party to the conference.
5. Tap the Conference soft key to place a new call.
The conference call is placed on hold.
6. Enter the number of the new party and then press , , or tap the Send soft
key.
7. When the new party answers the call, tap the Conference soft key to add the new
party to the conference.
8. Repeat steps 5 to 7 until you have added all intended parties.
The procedures to set up a network conference call on specific servers may be different
from introduced above. Contact your system administrator for more information.
Network conference is configurable via web user interface only.
Basic Call Features
117
You can use call park to place a call on hold, and then retrieve the call from another
phone in the system (for example, a phone in another office or conference room). You
can park an active call by tapping the call park key on the phone. If the call is parked
successfully, the response is either a voice prompt confirming that the call was parked,
or a visible prompt on the touch screen.
Note
To configure a call park key via phone user interface:
1. Tap the DSS Key key.
2. Tap the desired line key.
3. Tap the gray box of the Type field.
4. Tap Key Event from the pull-down list.
5. Tap the gray box of the Key Event field.
6. Tap Call Park from the pull-down list.
7. Tap the gray box of the Account ID field.
8. Tap the desired line from pull-down list.
9. (Optional.) Enter the string that will appear on the touch screen in the Label field.
10. Enter the call park code in the Value field.
11. Tap the Save soft key to accept the change or to cancel.
12. Tap the DSS Key key to return to the idle screen.
Call park key is configurable via web user interface at the path DSSKey->Line Key.
To use call park:
1. User on phone A places a call to phone B.
Call park is not available on all servers. Contact your system administrator for more
information.
User Guide for the SIP-T48G IP Phone
118
2. User on phone A wants to take the call in a conference room for privacy, then tap
the call park key on phone A.
3. User on phone A walks to an available conference room where the phone is
designated as phone C. The user dials the call park retrieve code to retrieve the
parked call.
The system establishes call between phone C and B.
Note
You can use call pickup to answer someone else’s incoming call on the phone. The
SIP-T48G IP phone supports directed call pickup and group call pickup. Directed call
pickup is used for picking up a call that is ringing at a specific phone number. Group call
pickup is used for picking up a call that is ringing at any phone number in the group. The
pickup group should be predefined, contact your system administrator for more
information.
You can pick up an incoming call by using the DPickup/GPickup soft key. To use call
pickup, you need to configure the call pickup code beforehand on a global or per-line
basis via web user interface. The call pickup code configured on a per-line basis takes
precedence over that configured on a global basis.
Note
Directed Call Pickup
To enable directed call pickup and configure the directed call pickup code on a global
basis via web user interface:
1. Click on Features->Call Pickup.
2. Select Enabled from the pull-down list of Directed Call Pickup.
The call park code and call park retrieve code are predefined on the system server.
Contact your system administrator for more information.
If the parked call is not retrieved within a period of time assigned by the system, the
phone performing call park feature will receive call back.
If there are many incoming calls at the same time, pressing the GPickup soft key on the
phone will pick up the call that rings first.
Basic Call Features
119
3. Enter the directed call pickup code in the Directed Call Pickup Code field.
4. Click Confirm to accept the change.
To configure the directed call pickup code on a per-line basis via web user interface:
1. Click on Account.
2. Select the desired account from the pull-down list of Account.
3. Click on Advanced.
4. Enter the directed call pickup code in the Directed Call Pickup Code field.
5. Click Confirm to accept the change.
To pick up a call directly:
1. Pick up the handset or tap the line key.
User Guide for the SIP-T48G IP Phone
120
The DPickup soft key appears on the on-screen keypad.
2. Tap the DPickup soft key on your phone when a phone receives an incoming call.
3. Enter the phone number which receives an incoming call.
4. Tap the DPickup soft key again.
The call is answered on your phone.
You can also configure a line key as a directed pickup key via phone user interface or
web user interface. You can pick up a call by tapping the directed pickup key directly.
For more information, refer to Line Keys on page 67.
Group Call Pickup
To enable the group call pickup and configure the group call pickup code on a global
basis via web user interface:
1. Click on Features->Call Pickup.
2. Select Enabled from the pull-down list of Group Call Pickup.
3. Enter the group call pickup code in the Group Call Pickup Code field.
4. Click Confirm to accept the change.
Basic Call Features
121
To configure the group call pickup code on a per-line basis via web user interface:
1. Click on Account.
2. Select the desired account from the pull-down list of Account.
3. Click on Advanced.
4. Enter the group call pickup code in the Group Call Pickup Code field.
5. Click Confirm to accept the change.
To pick up a call in the group:
1. Pick up the handset or tap the line key.
The GPickup soft key appears on the on-screen keypad.
2. Tap the GPickup soft key on your phone when a phone in the group receives an
incoming call.
The call is answered on your phone.
User Guide for the SIP-T48G IP Phone
122
You can also configure a line key as a group pickup key via phone user interface or web
user interface. You can pick up a call by tapping the group pickup key directly.
Note
You can use anonymous call to block the identity and phone number from showing up to
the called party when you call someone. For example, you want to call to consult some
of the services, but don’t want to be harassed. Anonymous call is configurable on a
per-line basis. You can also configure the phone to send anonymous code to the server
to activate/deactivate anonymous call on the server side.
Note
To configure anonymous call via phone user interface:
1. Tap ->Call Features->Anonymous.
2. Tap the desired line.
3. Tap the On radio box of the Local Anonymous field.
4. (Optional.) Tap the On Code or Off Code radio box of the Send Anonymous Code
field.
5. (Optional.) Enter the anonymous call on code in the On Code field.
6. (Optional.) Enter the anonymous call off code in the Off Code field.
7. Tap the Save soft key to accept the change or to cancel.
Anonymous call is configurable via web user interface at the path Account->Basic.
Anonymous call is not available on all servers. Contact your system administrator for the
anonymous call on code and off code.
The directed call pickup code and group call pickup code are predefined on the system
server. Contact your system administrator for more information.
Basic Call Features
123
To place an anonymous call:
1. Using the specific line on the phone to place a call to phone B.
The touch screen of phone B prompts an incoming call from anonymity.
You can use anonymous call rejection to reject incoming calls from anonymous callers.
Anonymous call rejection automatically rejects incoming calls from callers who
deliberately block their identities and numbers from showing up. Anonymous call
rejection is configurable on a per-line basis.
To configure anonymous call rejection via phone user interface:
1. Tap ->Call Features->Anonymous.
2. Tap the desired line.
3. Tap the On radio box of the Anonymous Rejection field.
4. (Optional.) Enter the anonymous call rejection on code in the On Code field.
5. (Optional.) Enter the anonymous call rejection off code in the Off Code field.
6. Tap the Save soft key to accept the change or to cancel.
User Guide for the SIP-T48G IP Phone
124
Anonymous call rejection is configurable via web user interface at the path
Account->Basic.
When the phone B with anonymous call feature enabled places a call to your phone,
the call will be rejected, and the touch screen of the phone B will prompts the following:
Advanced Phone Features
125
This chapter provides operating instructions for the advanced features of the SIP-T48G IP
phone. Topics include:
Busy Lamp Field (BLF)
Call Recording
Hot Desking
Intercom
Multicast Paging
Music on Hold
Messages
If you require additional information or assistance with your new phone, contact your
system administrator.
You can use BLF to monitor a specific line for status changes on the phone. For example,
you can configure a BLF key on the phone for monitoring the status of a friend’s line
(busy or idle). The BLF key illuminates solid red when the friend’s line is in use.
You can tap a BLF key to dial out the monitored phone number when the monitored line
is idle. You can receive a visual and an audio alert (if enabled), and also pick up the call
when the monitored line receives an incoming call. For more information, contact your
system administrator.
To configure a BLF key via phone user interface:
1. Tap the DSS Key key.
2. Tap the desired line key.
3. Tap the gray box of the Type field.
4. Tap BLF from the pull-down list.
5. Tap the gray box of the Account ID field.
6. Tap the desired line from the pull-down list.
7. (Optional.) Enter the string that will appear on the touch screen in the Label field.
8. Enter the phone number or extension you want to monitor in the Value field.
User Guide for the SIP-T48G IP Phone
126
9. (Optional.) Enter the pickup code in the Extension field.
10. Tap the Save soft key to accept the change or to cancel.
11. Tap the DSS Key key to return to the idle screen.
BLF key is configurable via web user interface at the path DSSKey->Line key.
The following table lists the BLF key icon status:
Status of the BLF Key Icon
Status of the Monitored User
The monitored user is idle.
(flashing)
The monitored user places a call to another
user.
(flashing)
The monitored user receives an incoming
intercom call.
The monitored user is during an active call.
The call of the monitored user is parked.
The monitored user does not exist.
You can enable audio alert for BLF pickup on the phone. This allows the monitoring
phone to play a warning tone when the monitored line receives an incoming call. You
can also enable visual alert for BLF pickup on the phone. This allows the touch screen of
the monitoring phone to display the caller ID when the monitored line receives an
incoming call.
To enable visual and audio alert via web user interface:
1. Click on Features->Call Pickup.
2. Select Enabled from the pull-down list of Visual Alert for BLF Pickup.
Advanced Phone Features
127
3. Select Enabled from the pull-down list of Audio Alert for BLF Pickup.
4. Click Confirm to accept the change.
Note
When the monitored line receives an incoming call, the followings occur on the phone:
The phone plays a warning tone (if enabled).
The BLF key icon illuminates red and flashes.
The caller ID appears on the touch screen (if enabled).
In the following figure, the touch screen shows an incoming call from 2003 on the
monitored line.
When there is an active call on the IP phone, you can transfer the active call to the
monitored phone number directly by tapping the BLF key. The phone transfers the active
call differently depending on the transfer mode via DSS key. For more information on
performing call transfer, refer to Call Transfer on page 111.
Visual and audio alerts are configurable via web user interface only.
User Guide for the SIP-T48G IP Phone
128
To configure the transfer mode via DSS key via web user interface:
1. Click on Features->Transfer.
2. Select the desired transfer mode from the pull-down list of Transfer Mode Via
Dsskey. Depending on your selection:
- If you select Blind Transfer, tap the BLF key to blind transfer the call to the
monitored phone number.
- If you select Attended Transfer, tap the BLF key to dial out the monitored phone
number. Then you can perform the attended or semi-attended transfer.
- If you select New Call, tap the BLF key to place a new call to the monitored user.
3. Click Confirm to accept the change.
Note
You can record calls by tapping a record key on the phone. The SIP-T48G IP phone
supports record and URL record.
Two ways of call recording:
Record: The phone sends a SIP INFO message containing a specific header “Record:
on/off” to trigger a recording.
URL Record: The phone sends an HTTP URL request to trigger a recording. Contact
your system administrator for the predefined URL.
Note
Call record is not available on all servers. Contact your system administrator for more
information.
Transfer mode via DSS key is configurable via web user interface only.
Advanced Phone Features
129
To configure a record key via phone user interface:
1. Tap the DSS Key key.
2. Tap the desired line key.
3. Tap the gray box of the Type field.
4. Tap Key Event from the pull-down list.
5. Tap the gray box of the Key Event field.
6. Tap Record from the pull-down list.
7. (Optional.) Enter a label that will appear on the touch screen in the Label field.
8. Tap the Save soft key to accept the change or to cancel.
9. Tap the DSS Key key to return to the idle screen.
To configure a URL record key via phone user interface:
1. Tap the DSS Key key.
2. Tap the desired line key.
3. Tap the gray box of the Type field.
4. Tap URL Record from the pull-down list.
5. (Optional.) Enter a label that will appear on the touch screen in the Label field.
6. Enter the URL (e.g., http://10.1.2.224/phonerecording.cgi) in the URL Record field.
User Guide for the SIP-T48G IP Phone
130
7. Tap the Save soft key to accept the change or to cancel.
8. Tap the DSS Key key to return to the idle screen.
Record and URL record key are configurable via web user interface at the path
DSSKey->Line Key.
The Record and URL Record keys control the recording, and are available:
During an active call
When calls are on hold or mute
During a blind or attended transfer
During a conference call
When the phone prompts you to answer an incoming call
The Record and URL Record keys are not available when:
There is no connected calls on your phone
You place a new call
To record a call:
1. Tap the Record key or URL Record key during a call.
If the recording starts successfully, the recording icon will appear on the touch
screen and the icon of the Record key or URL Record key changes to .
2. Tap the Record key or URL Record key again to stop recording.
The recording icon disappears from the touch screen and the icon of the Record key
or URL Record key changes to .
Recording status indications you need to know:
Circumstance
Icons on the touch screen
A recording is started
appears on the touch screen
A recording cannot be started
appears for 1 second
A recording cannot be stopped
appears for 1 second, then goes back
The recording box is full
appears for 1 second
The call cannot be recorded
appears for 1 second
You can listen to the recordings stored on your server system. For example, you can dial
an access code to listen to the recordings.
Note
The way in which you listen to the recordings may be different on different servers.
Contact your system administrator for more information.
Advanced Phone Features
131
Hot desking originates from the definition of being the temporary physical occupant of
a work station or surface by a particular employee. A primary motivation for hot
desking is cost reduction. This feature is regularly used in places where not all the
employees are in the office at the same time, or not in the office for very long at all,
which means actual personal offices would be often vacant, consuming valuable space
and resources.
You can use hot desking on the SIP-T48G IP phone to log out of the existing accounts
and then log into a new account. As a result, many users can share the phone resource
in different time. To use this feature, you need to configure a hot desking key in
advance.
Note
To configure a hot desking key via phone user interface:
1. Tap the DSS Key key.
2. Tap the desired line key.
3. Tap the gray box of the Type field.
4. Tap Key Event from the pull-down list.
5. Tap the gray box of the Key Event field.
6. Tap Hot Desking from the pull-down list.
7. (Optional.) Enter a label that will appear on the touch screen in the Label field.
8. Tap the Save soft key to accept the change or to cancel.
9. Tap the DSS Key key to return to the idle screen.
Hot desking key is configurable via web user interface at the path DSSKey->Line Key.
Hot desking is not available on all servers. Contact your system administrator for more
information.
User Guide for the SIP-T48G IP Phone
132
To use hot desking:
1. Tap the Hot Desking key when the phone is idle.
The touch screen prompts the following warning:
2. Tap the OK soft key.
Registration configurations of all accounts on the phone will be cleared
immediately.
The login wizard will be shown as below:
3. Enter the login information in each field.
4. Tap the Save soft key to login or to cancel.
Intercom is a useful feature in an office environment to quickly connect with the operator
or the secretary. You can tap the intercom key to automatically connect with a remote
extension for outgoing intercom calls, and the remote extension will automatically
answer the incoming intercom calls.
Note
Intercom is not available on all servers. Contact your system administrator for more
information.
Advanced Phone Features
133
To configure an intercom key via phone user interface:
1. Tap the DSS Key key.
2. Tap the desired line key.
3. Tap the gray box of the Type field.
4. Tap Intercom from the pull-down list.
5. Tap the gray box of the Account ID field.
6. Tap the desired line from the pull-down list.
7. (Optional.) Enter the string that will appear on the touch screen in the Label field.
8. Enter the remote extension number in the Value field.
9. Tap the Save soft key to accept the change or to cancel.
10. Tap the DSS Key key to return to the idle screen.
Intercom key is configurable via web user interface at the path DSSKey->Line Key.
To place an intercom call:
1. Tap the intercom key when the phone is idle.
The phone is automatically connected to the extension specified in the Value field.
2. Tap the intercom key again or the End Call soft key to end the intercom call.
The SIP-T48G IP phone supports to automatically answer an incoming intercom call by
default. The phone automatically plays a warning tone when it receives an incoming
intercom call. In addition, you can enable the phone to mute the microphone when it
automatically answers an incoming intercom call. You can also enable the phone to
automatically answer an incoming intercom call while there is already an active call on
the phone. The active call is placed on hold.
User Guide for the SIP-T48G IP Phone
134
Intercom features you need to know:
Intercom Feature
Description
Accept Intercom
Enable or disable the IP phone to automatically
answer an incoming intercom call.
Intercom Mute
Enable or disable the microphone on the IP phone for
intercom calls.
Intercom Tone
Enable or disable the IP phone to play a warning
tone when it receives an incoming intercom call.
Intercom Barge
Enable or disable the IP phone to automatically
answer an incoming intercom call while there is
already an active call on the phone.
To configure intercom features via phone user interface:
1. Tap ->Call Features->Intercom.
2. Make the desired changes.
3. Tap the Save soft key to accept the change or to cancel.
These specific parameters are configurable via web user interface at the path
Features->Intercom.
Accept Intercom
You can enable or disable the phone to automatically answer an incoming intercom call.
If Accept Intercom is enabled, the phone automatically answers an incoming intercom
call. If Accept Intercom is disabled, the phone rejects incoming intercom calls and sends
a busy message to the caller. Accept Intercom is enabled by default.
Note
Your administrator can set a period of delay time before the phone automatically
answers intercom calls. Contact your system administrator for more information.
Advanced Phone Features
135
Intercom Mute
You can mute or un-mute the microphone on the phone for intercom calls automatically.
If Intercom Mute is enabled, the microphone is muted for intercom calls. If Intercom
Mute is disabled, the microphone works for intercom calls. Intercom Mute is disabled by
default.
Intercom Tone
You can enable or disable the phone to play a warning tone when receiving an
intercom call. If Intercom Tone is enabled, the phone plays a warning tone before
answering the intercom call. If Intercom Tone is disabled, the phone automatically
answers the intercom call without warning. Intercom Tone is enabled by default.
Intercom Barge
You can enable or disable the phone to automatically answer an incoming intercom call
while there is already an active call on the phone. If Intercom Barge is enabled, the
phone automatically answers the intercom call and places the active call on hold. If
Intercom Barge is disabled, the phone handles an incoming intercom call like a waiting
call. Intercom Barge is disabled by default.
You can use multicast paging to quickly and easily forward time sensitive
announcements out to people within the multicast group. You can configure a multicast
paging key on the phone, which allows you to send a Real Time Transport Protocol (RTP)
stream to the pre-configured multicast address(es) without involving SIP signaling. You
can configure the phone to receive an RTP stream from pre-configured multicast
listening address(es) without involving SIP signaling. You can specify up to 10 multicast
listening addresses.
To configure a multicast paging key via phone user interface:
1. Tap the DSS Key key.
2. Tap the desired line key.
3. Tap the gray box of the Type field.
4. Tap Key Event from the pull-down list.
5. Tap the gray box of the Key Event field.
6. Tap Multicast Paging from the pull-down list.
7. (Optional.) Enter the string that will appear on the touch screen in the Label field.
8. Enter the multicast IP address and port number (e.g., 224.5.6.20:10008) in the Value
field.
User Guide for the SIP-T48G IP Phone
136
The valid multicast IP addresses range from 224.0.0.0 to 239.255.255.255.
9. Tap the Save soft key to accept the change or to cancel.
10. Tap the DSS Key key to return to the idle screen.
Multicast paging key is configurable via web user interface at the path DSSKey->Line
Key.
You can also configure the phone to use a default codec for sending multicast RTP
stream via web user interface.
To configure a default codec for multicast paging via web user interface:
1. Click on Features->General Information.
2. Select the desired codec from the pull-down list of Multicast Codec.
The default codec is G722.
Advanced Phone Features
137
3. Click Confirm to accept the change.
Note
To send RTP stream:
1. Tap the multicast paging key when the phone is idle.
The phone sends RTP to a preconfigured multicast address (IP: Port). Any phone
configured to listen to the multicast address may automatically answer the paging
call and play receiving RTP. For more information on how to configured a phone to
listen to a multicast, refer to Receiving RTP Stream on page 137. For both sending
and receiving of the multicast RTP, there is no SIP signaling involved.
The multicast paging key illuminates solid green.
The following figure shows a multicast RTP session on the phone:
2. Tap the Hold soft key to place the current multicast RTP session on hold.
3. Tap the End Call soft key to cancel the multicast RTP session.
Note
You can configure the phone to receive a Real Time Transport Protocol (RTP) stream from
the pre-configured multicast address(es) without involving SIP signaling. You can
specify up to 10 multicast addresses that the phone listens to on the network.
How the phone handles incoming multicast paging calls depends on Paging Barge and
Paging Priority Active parameters configured via web user interface.
If G722 codec is used for multicast paging, the touch screen displays the icon to
indicate that is providing high definition voice.
Default codec for multicast paging is configurable via web user interface only.
Multicast RTP is one way only from sender to the multicast address(es) (receiver). For
outgoing RTP multicasts, all other existing calls on the phone will be placed on hold.
User Guide for the SIP-T48G IP Phone
138
Paging Barge
Paging barge parameter defines the priority of the voice call in progress. If the priority
of an incoming multicast paging call is lower than that of the active call, it will be
ignored automatically. If Disabled is selected from the pull-down list of Paging Barge,
the voice call in progress takes precedence over all incoming multicast paging calls.
Valid values in the Paging Barge field:
1 to 10: Define the priority of the active call, 1 with the highest priority, 10 with the
lowest.
Disabled: The voice call in progress shall take precedence over all incoming paging
calls.
Paging Priority Active
Paging priority active parameter decides how the phone handles incoming multicast
paging calls when there is already a multicast paging call on the phone. If enabled, the
phone will ignore incoming multicast paging calls with lower priorities, otherwise, the
phone will answer incoming multicast paging calls automatically and place the
previous multicast paging call on hold. If disabled, the phone will automatically ignore
all incoming multicast paging calls.
To configure multicast listening addresses via web user interface:
1. Click on Directory->Multicast IP.
2. Select the desired value from the pull-down list of Paging Barge.
3. Select the desired value from the pull-down list of Paging Priority Active.
4. Enter the multicast IP address(es) and port number (e.g., 224.5.6.20:10008) which
the phone listens for incoming RTP multicast in the Listening Address field.
5. Enter the label in the Label field.
Label will appear on the touch screen when receiving the multicast RTP stream.
Advanced Phone Features
139
6. Click Confirm to accept the change.
Note
Music on hold (MoH) is the business practice of playing recorded music to fill the silence
that would be heard by the party placed on hold. To use this feature, you should specify
a SIP URI pointing to a Music on Hold Server account. When a call is placed on hold, the
phone will send a SIP INVITE message to the Music on Hold Server account. The Music
on Hold Server account automatically answers to the SIP INVITE messages and
immediately plays audio from some source located anywhere (LAN, Internet) to the
held party. Contact your system administrator for the SIP URI.
To configure music on hold server via web user interface:
1. Click on Account.
2. Select the desired account from the pull-down list of Account.
3. Click on Advanced.
4. Enter the SIP URI (e.g., sip:moh@sip.com) in the Music Server URI field.
5. Click Confirm to accept the change.
The priorities of listening addresses are predefined: 1 with the highest priority, 10 with the
lowest.
Both the multicast paging sender and the receiver play a warning tone when
establishing a multicast paging call.
Multicast listening addresses are configurable via web user interface only.
User Guide for the SIP-T48G IP Phone
140
When you place a call on hold, the held party can hear the music.
Note
You can leave voice mails for someone else on the SIP-T48G IP phone. You can also listen
to the voice mails stored in a centralized location. When receiving a new voice mail, the
phone will play a warning tone, and the power indicator LED will slow flash red. The
touch screen will prompt receiving a new voice mail with the number of waiting voice
mails (e.g., New Voice Mail(1)) and the icon.
Note
To leave a voice mail:
You can leave a voice mail for someone else when he/she is busy or inconvenient to
answer the call. Follow the voice prompt from the system server to leave a voice mail,
and then hang up.
To configure voice mail access codes via phone user interface:
1. Tap ->Messages->Set Voice Mail.
2. Enter the voice mail access code (e.g., *88) in the desired account field.
Voice Mail is not available on all servers. Contact your system administrator for more
information.
The icon on the status bar has a counter indicating the number of messages you
haven’t heard yet.
All involved parties cannot use encrypted RTP (SRTP).
Music on hold server is configurable via web user interface only.
Advanced Phone Features
141
You can tap the 123 soft key to select the proper input mode.
3. Tap the Save soft key to accept the change or to cancel.
Note
To listen to voice mails:
1. When the phone prompts receiving a new voice mail, press or tap the
Connect soft key to dial out the voice mail access code.
2. Follow the voice prompt to listen to voice mails.
You can tap the icon when the phone is idle to pop up the dialog box, and then
tap the Connect soft key.
Note
Voice mail access code must be predefined on the system server. Contact your system
administrator for the more information.
Before listening to voice mails, make sure the voice mail access code has been
configured.
When all new voice mails are retrieved, the power indicator LED will go out.
User Guide for the SIP-T48G IP Phone
142
To view the voice mail via phone user interface:
1. Tap ->Messages->View Voice Mail.
The touch screen displays the amount of new and old voice mails
You can tap the account to listen to voice mails.
The SIP-T48G IP phone supports MWI when receiving a new voice message. If someone
leaves you a voice mail, you will receive a message waiting indicator. MWI will be
indicated in three ways: a warning tone, an indicator message (including a voice mail
icon) on the touch screen, and the power indicator LED slow flashes red. This will be
cleared when you retrieve all voice mails or delete them.
The MWI service is unsolicited for some servers, so the SIP-T48G IP phone only handles
the MWI messages sent from the server. But for other servers, the MWI service is
solicited, so the SIP-T48G IP phone must enable subscription for MWI.
Note
The MWI subscription parameters you need to know:
Options
Description
Subscribe for MWI
Enable or disable a subscription for MWI service.
MWI Subscription Period
Period of MWI subscription. The IP phone sends a
refresh SUBSCRIBE request before initial subscription
expires.
Subscribe MWI To Voice
Mail
Enable or disable a subscription to the voice mail
number for MWI service.
To use this feature, you should also configure the
MWI service is not available on all servers. Contact your system administrator for more
information.
Advanced Phone Features
143
voice mail number.
Note
To configure subscribe for MWI via web user interface
1. Click on Account.
2. Select the desired account from the pull-down list of Account.
3. Click on Advanced.
4. Select Enabled from the pull-down list of Subscribe for MWI.
5. Enter the period time in the MWI Subscription Period (Seconds) field.
6. Click Confirm to accept the change.
The IP phone will subscribe to the account number for MWI service by default.
To enable Subscribe MWI to Voice Mail via web user interface:
1. Click on Account.
2. Select the desired account from the pull-down list of Account.
3. Click on Advanced.
4. Select Enabled from the pull-down list of Subscribe MWI To Voice Mail.
Whether the phone sends SUBSCRIBE messages for MWI service to the account or the
voice number MWI service depends on the server. Contact your system administrator for
more information.
User Guide for the SIP-T48G IP Phone
144
5. Enter the desired voice mail number in the Voice Mail field.
6. Click Confirm to accept the change.
The IP phone will subscribe to the voice mail number for MWI service using
Subscribe MWI to Voice Mail.
Note
MWI subscription is configurable via web user interface only.
Troubleshooting
145
This chapter provides general troubleshooting information to help you solve the
problems you might encounter when using your SIP-T48G IP phone.
If you require additional information or assistance with your new phone, contact your
system administrator.
Why is the touch screen blank?
Ensure that the phone is properly plugged into a functional AC outlet.
Ensure the output of the power adapter is 5V/2A.
Ensure that the phone is plugged into a socket controlled by a switch that is on.
If the phone is plugged into a power strip, try to plug it directly into a wall outlet
instead.
If the phone is powered from PoE, ensure you use a PoE-compliant switch or hub.
Why does the phone display "Network Unavailable"?
Ensure that the Ethernet cable is plugged into the Internet port on the phone and
the Ethernet cable is not loose.
Ensure that the switch or hub in your network is operational.
Why doesn’t the phone display time and date correctly?
Check if you have configured the phone to obtain the time and date from the SNTP
server automatically. If the phone fails to connect the SNTP server, contact your system
administrator for more information. You can also configure the time and date manually.
For more information, refer to Time & Date on page 27.
How do I find the basic information of the IP phone?
Press the OK key when the IP phone is idle to check the basic information of the IP phone,
such as IP address and firmware version. For more basic information, refer to Phone
Status on page 18.
How to obtain the MAC address of a phone when the phone is not powered on?
Three ways to obtain the MAC address of a phone:
You can ask your supplier for shipping information sheet which includes MAC
addresses according to the corresponding PO (Purchase Order).
You can find the MAC address in the label of carton box.
User Guide for the SIP-T48G IP Phone
146
You can also find the MAC address from the phone’s bar code on the back of the
phone.
Why can’t I get a dial tone?
Check for any loose connections and that the phone has been installed properly.
For the installation instructions, refer to Phone Installation on page 11.
Switch between the Handset, Headset (if present) or Hands-Free Speakerphone to
check whether the dial tone is present for one of the audio modes.
If the dial tone exists on another audio mode, connect a different handset or
headset to isolate the problem.
Why doesn’t the phone ring?
Check the ringer volume on the phone. To adjust the ringer volume setting, press the
Volume key when the phone is on-hook and idle. For more information, refer to Volume
on page 31.
Why can’t I receive calls?
Check the SIP registration with your system administrator.
Check that DND (Do Not Disturb) mode is deactivated on your phone. Refer to Do
Not Disturb (DND) on page 99.
Check that call forward is disabled on the phone. Refer to Call Forward on page
104.
Check whether the caller number is stored in the blacklist directory. Refer to Blacklist
on page 51.
Why does my handset not work?
Check that the handset cord is fully connected to both the handset jack on the phone
and handset. Refer to Phone Installation on page 11.
Why does my headset not work?
Check that the headset cord is fully connected to the headset jack on the phone.
Refer to Phone Installation on page 11.
Check that the headset mode is activated. Refer to Headset Use on page 59.
Check that the headset volume is adjusted to an appropriate level. Refer to Volume
on page 31.
What is the difference between user name, register name and display name?
Both user name and register name are defined by the server. A user name is used to
identify the account while a register name matched with a password is used for
Troubleshooting
147
authentication if the server requires. Display name is the caller ID that will be displayed
on the callee’s touch screen. Server configuration may override the local configuration.
Why does the phone play a tone when there is a call on hold? How to disable it?
When there is a call on hold, the phone will play a hold tone every 30 seconds. Call hold
tone is enabled by default. Call hold tone and the interval of playing a hold tone are
configurable via web user interface only.
To configure call hold tone and call hold tone delay via web user interface:
1. Click on Features->General Information.
2. Select the desired value from the pull-down list of Play Hold Tone.
3. Enter the desired time in the Play Hold Tone Delay field.
4. Click Confirm to accept the change.
Why does the wallpaper has bad display？
Do one of the following:
Check that the custom image is clear.
Check that the file format of the custom image for the wallpaper is *.jpg, *.webp or
*.bmp.
Check that the custom image is not too large or small. The phone will adjust the
image with the short side to display.
Check that the picture resolution of the wallpaper. The wallpaper resolution of the
SIP-T48G IP phone is 800*480 pixels.
User Guide for the SIP-T48G IP Phone
148
How to change the user password?
To change the user password via web user interface:
1. Click on Security->Password.
2. Select user from the pull-down list of User Type.
3. Enter the new user password in the New Password field and Confirm Password field.
4. Click Confirm to accept the change.
You can also contact your system administrator for help.
Note
How to make a call using SRTP?
You can enable SRTP to encrypt the audio stream(s) of phone calls. The parties
participating in the call should enable SRTP on a per-line basis.
To enable SRTP on a per-line basis via web user interface:
1. Click on Account.
2. Select the desired account from the pull-down list of Account.
3. Click on Advanced.
If logging into the web user interface of the phone with the user credential, you need to
enter the current user password in the Old Password field.
User password is configurable via web user interface only.
Troubleshooting
149
4. Select the desired value (Optional or Compulsory) from the pull-down list of RTP
Encryption (SRTP).
5. Click Confirm to accept the change.
Note
How to reboot the phone?
To reboot the phone via web user interface:
1. Click on Settings->Upgrade.
2. Click Reboot to reboot the IP phone.
SRTP is not available on all servers. Contact your system administrator for more
information.
SRTP is configurable via web user interface only.
User Guide for the SIP-T48G IP Phone
150
Any reboot of the phone may take a few minutes.
How to export PCAP trace?
We may need you to provide a PCAP trace to help analyze your problem.
To export a PCAP trace via web user interface:
1. Click on Settings->Configuration.
2. Click Start to begin capturing signal traffic.
3. Recreate the error to be documented in the trace.
4. Click Stop to stop the capture.
5. Click Export to open file download window, and then save the file to your local
system.
How to export system log?
We may need you to provide a system log to help analyze your problem.
To export the system log to local PC via web user interface:
1. Click on Settings->Configuration.
2. Select 6 from the pull-down list of System Log Level.
3. Click Confirm to accept the change.
The web user interface prompts “Do you want to restart your machine?”. The
configuration will take effect after reboot.
4. Click OK to reboot the phone.
After the IP phone finishes reboot, the system log level is set as 6, the debug level.
5. Mark the Local radio box in the Export System Log field.
6. Reproduce the issue.
Troubleshooting
151
7. Click Export to open file download window, and then save the file to your local
system.
You can also export the system log to a syslog server, contact your system administrator
for more information.
Note
How to export/import the phone configurations?
We may need you to provide the phone configurations to help analyze problem. In
some instance, you may need to import configurations to your phone.
To export the phone configurations via web user interface:
1. Click on Settings->Configuration.
2. Click Export to open file download window, and then save the file to your local
system.
It is recommended to reset the syslog level to 3 after exporting the system syslog.
User Guide for the SIP-T48G IP Phone
152
To import the phone configurations via web user interface:
1. Click on Settings->Configuration.
2. Click Browse to locate a configuration file from your local system.
3. Click Import to import the configuration file.
Note
How to upgrade firmware?
To upgrade firmware via web user interface:
1. Click on Settings->Upgrade.
2. Click Browse to locate the firmware from your local system.
3. Click Upgrade to upgrade the firmware.
The browser pops up the dialog box “Firmware of the SIP Phone will be updated. It
will take 5 minutes to complete. Please don't power off!”.
4. Click OK to confirm upgrading.
How to reset the phone?
Reset the phone to factory configurations after you have tried almost all troubleshooting
suggestions but do not solve the problem. You need to note that all custom settings will
be overwritten after reset.
To reset the phone via phone user interface:
1. Tap ->Advanced (password: admin) ->Reset to Factory.
2. Tap the gray box of the Reset Option field.
3. Tap the desired reset option from the pull-down list.
The file format of configuration file must be *.bin.
Troubleshooting
153
4. Tap the Reset key.
The touch screen prompts the following warning:
5. Tap the OK soft key.
The phone begins resetting.
After reset, the touch screen prompts “Welcom Initializing…Please wait”.
User Guide for the SIP-T48G IP Phone
154
The phone will be reset to factory sucessfully after startup.
Note
Reset of the phone may take a few minutes. Do not power off until the phone starts up
successfully.
Regulatory Notices
155
Contact your Yealink Authorized Reseller for information about service agreements
applicable to your product.
TO THE FULL EXTENT ALLOWED BY LAW, YEALINK EXCLUDES FOR ITSELFAND ITS
SUPPLIERS ANY LIABILITY, WHETHER BASED IN CONTRACT OR TORT
(INCLUDINGNEGLIGENCE), FOR INCIDENTAL, CONSEQUENTIAL, INDIRECT, SPECIAL,
OR PUNITIVE DAMAGES OFANY KIND, OR FOR LOSS OF REVENUE OR PROFITS, LOSS
OF BUSINESS, LOSS OF INFORMATION ORDATA, OR OTHER FINANCIAL LOSS ARISING
OUT OF OR IN CONNECTION WITH THE SALE,INSTALLATION, MAINTENANCE, USE,
PERFORMANCE, FAILURE, OR INTERRUPTION OF ITS PRODUCTS,EVEN IF YEALINK OR ITS
AUTHORIZED RESELLER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCHAMAGES,
AND LIMITS ITS LIABILITY TO REPAIR, REPLACEMENT, OR REFUND OF THE
PURCHASERICE PAID, AT YEALINK’S OPTION. THIS DISCLAIMER OF LIABILITY FOR
DAMAGES WILL NOT BEAFFECTED IF ANY REMEDY PROVIDED HEREIN SHALL FAIL OF
ITS ESSENTIAL PURPOSE.
Save these instructions. Read these safety instructions before use!
The following basic safety precautions should always be followed to reduce risk of fire,
electrical shock, and other personal injury.
General Requirements
Before you install and use the device, read the safety instructions carefully
and observe the situation during operation.
During the process of storage, transportation, and operation, please always
keep the device dry and clean.
During the process of storage, transportation, and operation, please avoid
collision and crash of the device.
Please attempt not to dismantle the device by yourself. In case of any
discrepancy, please contact the appointed maintenance center for repair.
Without prior written consent, no organization or individual is permitted to
make any change to the structure or the safety design of the device. Yealink
is under no circumstance liable to consequences or legal issues caused by
such changes.
Please refer to the relevant laws and statutes while using the device. Legal
rights of others should be respected as well.
Environmental Requirements
Place the device at a well-ventilated place. Do not expose the device under
direct sunlight.
User Guide for the SIP-T48G IP Phone
156
Keep the device dry and free of dusts.
Place the device on a stable and level platform.
Please place no heavy objects on the device in case of damageand
deformation caused by the heavy load.
Keep at least 10 cm between the device and the closest object for heat
dissipation.
Do not place the device on or near any inflammable or fire-vulnerable object,
such as rubber-made materials.
Keep the device away from any heat source or bare fire, such as a candle or
an electric heater.
Keep the device away from any household appliance with strong magnetic
field or electromagnetic field, such as a microwave oven or a refrigerator.
Operating Requirements
Do not let a child operate the device without guidance.
Do not let a child play with the device or any accessory in case of accidental
swallowing.
Please use the accessories provided or authorized by the manufacturer only.
The power supply of the device shall meet the requirements of the input
voltage of the device. Pleaseuse the provided surge protection power socket
only.
Before plugging or unplugging any cable, make sure that your hands are
completely dry.
Do not spill liquid of any kind on the product or use the equipment near
water, for example, near a bathtub, washbowl, kitchen sink, wet basement
or near a swimming pool.
Do not tread on, pull, or over-bend any cable in case of malfunction of the
device.
During a thunderstorm, stop using the device and disconnect it from the
power supply. Unplug the power plug and the Asymmetric Digital Subscriber
Line (ADSL) twisted pair (the radio frequency cable) to avoid lightning strike.
If the device is left unused for a rather long time, disconnect it from the
power supply and unplug the power plug.
When there is smoke emitted from the device, or some abnormal noise or
smell, disconnect the device from the power supply, and unplug the power
plug immediately. Contact the specified maintenance center for repair.
Do not insert any object into equipment slots that is not part of the product or
auxiliary product.
Before connecting a cable, connect the grounding cable of the device first.
Do not disconnect the grounding cable until you disconnect all other cables.
Cleaning Requirements
Before cleaning the device, stop using it and disconnect it from the power
supply.
Use a piece of soft, dry and anti-static cloth to clean the device.
Keep the power plug clean and dry. Using a dirty or wet power plug may
lead to electric shock or other perils.
Appendix A-Time Zones
157
Time Zone
Time Zone Name
−11:00
Samoa
−10:00
United States-Hawaii-Aleutian
−10:00
United States-Alaska-Aleutian
−09:00
United States-Alaska Time
−08:00
Canada(Vancouver, Whitehorse)
−08:00
Mexico(Tijuana, Mexicali)
−08:00
United States-Pacific Time
−07:00
Canada(Edmonton, Calgary)
−07:00
Mexico(Mazatlan, Chihuahua)
−07:00
United States-Mountain Time
−07:00
United States-MST no DST
−06:00
Canada-Manitoba(Winnipeg)
−06:00
Chile(Easter Islands)
−06:00
Mexico(Mexico City, Acapulco)
−06:00
United States-Central Time
−05:00
Bahamas(Nassau)
−05:00
Canada(Montreal, Ottawa, Quebec)
−05:00
Cuba(Havana)
−05:00
United States-Eastern Time
−04:30
Venezuela(Caracas)
−04:00
Canada(Halifax, Saint John)
−04:00
Chile(Santiago)
−04:00
Paraguay(Asuncion)
−04:00
United Kingdom-Bermuda(Bermuda)
−04:00
United Kingdom(Falkland Islands)
−04:00
Trinidad&Tobago
−03:30
Canada-New Foundland(St.Johns)
−03:00
Denmark-Greenland(Nuuk)
−03:00
Argentina(Buenos Aires)
−03:00
Brazil(no DST)
−03:00
Brazil(DST)
−02:00
Brazil(no DST)
−01:00
Portugal(Azores)
0
GMT
0
Greenland
0
Denmark-Faroe Islands(Torshavn)
0
Ireland(Dublin)
0
Portugal(Lisboa, Porto, Funchal)
0
Spain-Canary Islands(Las Palmas)
0
United Kingdom(London)
0
Morocco
+01:00
Albania(Tirane)
+01:00
Austria(Vienna)
+01:00
Belgium(Brussels)
+01:00
Caicos
+01:00
Chad
+01:00
Spain(Madrid)
+01:00
Croatia(Zagreb)
+01:00
Czech Republic(Prague)
+01:00
Denmark(Kopenhagen)
+01:00
France(Paris)
User Guide for the SIP-T48G IP Phone
158
Time Zone
Time Zone Name
+01:00
Germany(Berlin)
+01:00
Hungary(Budapest)
+01:00
Italy(Rome)
+01:00
Luxembourg(Luxembourg)
+01:00
Macedonia(Skopje)
+01:00
Netherlands(Amsterdam)
+01:00
Namibia(Windhoek)
+02:00
Estonia(Tallinn)
+02:00
Finland(Helsinki)
+02:00
Gaza Strip(Gaza)
+02:00
Greece(Athens)
+02:00
Israel(Tel Aviv)
+02:00
Jordan(Amman)
+02:00
Latvia(Riga)
+02:00
Lebanon(Beirut)
+02:00
Moldova(Kishinev)
+02:00
Russia(Kaliningrad)
+02:00
Romania(Bucharest)
+02:00
Syria(Damascus)
+02:00
Turkey(Ankara)
+02:00
Ukraine(Kyiv, Odessa)
+03:00
East Africa Time
+03:00
Iraq(Baghdad)
+03:00
Russia(Moscow)
+03:30
Iran(Teheran)
+04:00
Armenia(Yerevan)
+04:00
Azerbaijan(Baku)
+04:00
Georgia(Tbilisi)
+04:00
Kazakhstan(Aktau)
+04:00
Russia(Samara)
+04:30
Afghanistan
+05:00
Kazakhstan(Aqtobe)
+05:00
Kyrgyzstan(Bishkek)
+05:00
Pakistan(Islamabad)
+05:00
Russia(Chelyabinsk)
+05:30
India(Calcutta)
+06:00
Kazakhstan(Astana, Almaty)
+06:00
Russia(Novosibirsk, Omsk)
+07:00
Russia(Krasnoyarsk)
+07:00
Thailand(Bangkok)
+08:00
China(Beijing)
+08:00
Singapore(Singapore)
+08:00
Australia(Perth)
+09:00
Korea(Seoul)
+09:00
Japan(Tokyo)
+09:30
Australia(Adelaide)
+09:30
Australia(Darwin)
+10:00
Australia(Sydney, Melbourne, Canberra)
+10:00
Australia(Brisbane)
+10:00
Australia(Hobart)
+10:00
Russia(Vladivostok)
+10:30
Australia(Lord Howe Islands)
+11:00
New Caledonia(Noumea)
+12:00
New Zealand(Wellington, Auckland)
+12:45
New Zealand(Chatham Islands)
+13:00
Tonga(Nukualofa)
Index
159
A
About This Guide ix
Account Management 75
Account Registration 75
Adding Contacts 39
Administrator password 30
Anonymous Call 122
Anonymous Call Rejection 123
Answering Calls 90
Area Code 81
Attaching Stand 11
Audio Settings 31
Auto Answer 90
Auto Redial 94
B
Backlight 24
Basic Network Settings 19
Blacklist 51
Block Out 82
Bluetooth 61
Busy Lamp Field (BLF) 125
C
Call Completion 95
Call Forward 104
Call Mute 98
Call History Management 55
Call Hold/Resume 98
Call Park 117
Call Pickup 118
Call Recording 128
Call Return 97
Call Transfer 111
Call Waiting 113
CE Mark Warning vi
Conference 113
Contact Management 34
Contrast 25
Copyright v
Customizing Your Phone 23
D
Declaration of Conformity vi
Deleting Contacts 43
Dial-now 80
Dial Plan 78
Do Not Disturb (DND) 99
Documentation 7
DSS Keys 67
E
Editing Contacts 42
Ending Calls 91
G
General Settings 23
Getting Started 9
H
Hardware Component Instructions 1
Headset Use 59
Headset Mode Activation/Deactivation
59
Hotline 84
Hot Desking 131
I
Icon Instructions 2
Importing/Exporting Contact lists 49
In This Guide ix
Incoming Intercom Calls 133
Intercom 132
K
Key as Send 31
L
Language 26
LED Instructions 4
Limitation of Liability 155
Line Keys 67
Live Dialpad 83
Local Conference 114
Local Directory 36
M
Message Waiting Indicator 142
Messages 140
Multicast Paging 135
Multiple Line Keys per Account 77
Music on Hold 139
N
Network Conference 115
Network Connection 11
P
Packaging Contents 9
Phone Initialization 13
Phone Installation 11
Phone Status 18
User Guide for the SIP-T48G IP Phone
160
Phone User Interface 5
Placing Calls 88
Placing Calls to Contacts 46
Programmable Keys 75
O
Outgoing Intercom Calls 133
Overview 1
R
Recent Call In Dialing 92
Redialing Numbers 92
Registration 14
Regulatory Notices 155
Remote Phone Book 53
Replace Rule 78
Ring Tones 32
S
Safety Instructions 155
Search Source List in Dialing 47
Searching for Contacts 47
Semi-attended Transfer 111
Service Agreements 155
System Customizations 59
T
Touch Screen Display 14
Time & Date 27
Time Zones 157
Troubleshooting 145
U
User Interfaces 5
V
Voice Mail 140
Volume 31
W
Warranty vi
Wallpaper 23
Web User Interface 5
WEEE Warning vii