Yealink Yealink SIP-T48G User manual

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
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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 [e-mail].

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_detail.aspx?CateId=1206&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
This section describes the changes to this guide for each release and guide version.
Major updates have occurred to the following sections:
Documentations on page 7
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
Packaging Contents on page 9

Table of Contents
xi
About This Guide..................................................................ix
In This Guide.................................................................................................................... ix
Summary of Changes..................................................................................................... ix
Changes for Release 72, Guide Version 72.2 ............................................................. 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

User Guide for the SIP-T48G IP Phone
xii
Key as Send ................................................................................................................ 31
Audio Settings................................................................................................................31
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

Table of Contents
xiii
Busy Lamp Field (BLF).................................................................................................. 125
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
On the website
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/SupportDownloadfiles_detail.aspx?CateId=1206&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
Check the list before installation. If you find anything missing, contact your system
administrator.