Yealink Yealink SIP-T48G User manual

Copyright © 2015 YEALINK NETWORK TECHNOLOGY CO., LTD
Copyright © 2015 Yealink Network Technology CO., LTD. All rights reserved. No parts of
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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 DocsFeed[email protected].

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
v
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. It also features an enhanced user experience and newly developed industrial
designs, with a large touch screen for easy and efficient use.
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.
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.
The following sections are new:
Shared Call Appearance (SCA)on page 181
Bridged Line Appearance (BLA) on page 198
Shared Line, Network Directory and Network Call Log features are hidden for IP phones
in neutral firmware, which are designed for the BroadWorks environment. Please contact
your system administrator for more information.

User Guide for the SIP-T48G IP Phone
vi
Major updates have occurred to the following sections:
Icon Instructions on page 15
LED Instructions on page 20
Web User Interface on page 21
Call Forward on page 135
The following section is new:
Phone Lock on page 49
Emergency Number on page 113
Short Message Service (SMS) on page 204
Major updates have occurred to the following sections:
Icon Instructions on page 15
User Interfaces on page 20
Bluetooth Headset on page 85
DSS Keys on page 93
Anonymous Call Rejection on page 156
Intercom on page 168
Multicast Paging on page 171
Appendix A - Time Zones on page 225
The following section is new:
Optional Accessories on page 26
Major updates have occurred to the following sections:
DSS Keys on page 93
Appendix A - Time Zones on page 225
The following sections are new:
BLF List on page 162

About This Guide
vii
Major updates have occurred to the following sections:
LED Instructions on page 20
Ring Tones on page 53
Anonymous Call Rejection on page 156
Multicast Paging on page 171
Troubleshooting on page 213
Appendix A - Time Zones on page 225
Major updates have occurred to the following sections:
Documentations on page 24
Packaging Contents on page 25
Phone Installation on page 28
Contact Management on page 55
Placing Calls on page 118

User Guide for the SIP-T48G IP Phone
viii

Table of Contents
ix
About This Guide ............................................................. v
In This Guide ............................................................................................................... v
Summary of Changes ................................................................................................ v
Changes for Release 80, Guide Version 80.60 ........................................................ v
Changes for Release 80, Guide Version 80.20 ....................................................... vi
Changes for Release 73, Guide Version 73.40 ....................................................... vi
Changes for Release 73, Guide Version 73.16 ....................................................... vi
Changes for Release 72, Guide Version 72.10 .......................................................vii
Table of Contents............................................................ ix
Overview ....................................................................... 13
Hardware Component Instructions ........................................................................ 13
Icon Instructions ........................................................................................................ 15
LED Instructions ......................................................................................................... 20
User Interfaces ......................................................................................................... 20
Phone User Interface ............................................................................................... 20
Web User Interface .................................................................................................. 21
Documentations........................................................................................................ 24
Getting Started.............................................................. 25
Packaging Contents ................................................................................................. 25
Optional Accessories ............................................................................................... 26
Phone Installation ..................................................................................................... 28
Phone Initialization ................................................................................................... 30
Registration ............................................................................................................... 31
Touch Screen Display ............................................................................................... 31
Navigating Menus and Fields ................................................................................ 33
Entering Data and Editing Fields............................................................................ 34
Phone Status ............................................................................................................. 35
Basic Network Settings ............................................................................................ 37
Customizing Your Phone ................................................ 41
General Settings ...................................................................................................... 41
Wallpaper.................................................................................................................. 41

User Guide for the SIP-T48G IP Phone
x
Backlight.................................................................................................................... 43
Contrast ..................................................................................................................... 43
Language .................................................................................................................. 44
Time & Date............................................................................................................... 45
Administrator Password .......................................................................................... 48
Key as Send .............................................................................................................. 49
Phone Lock ................................................................................................................ 49
Audio Settings........................................................................................................... 52
Volume ....................................................................................................................... 52
Ring Tones ................................................................................................................. 53
Contact Management ............................................................................................. 55
Directory .................................................................................................................... 55
Local Directory.......................................................................................................... 57
Blacklist...................................................................................................................... 74
Remote Phone Book ................................................................................................ 76
Call History Management....................................................................................... 79
System Customizations............................................................................................ 83
Headset Use ............................................................................................................. 83
Bluetooth Headset ................................................................................................... 85
DSS Keys.................................................................................................................... 93
Account Management........................................................................................... 104
Dial Plan .................................................................................................................. 107
Emergency Number ............................................................................................... 113
Live Dialpad............................................................................................................ 114
Hotline ..................................................................................................................... 115
Basic Call Features .......................................................117
Placing Calls ........................................................................................................... 118
Answering Calls...................................................................................................... 120
Ending Calls ............................................................................................................ 122
Redialing Numbers................................................................................................. 122
Recent Call In Dialing............................................................................................. 122
Auto Answer............................................................................................................ 124
Auto Redial.............................................................................................................. 125
Call Completion...................................................................................................... 126
Recall ....................................................................................................................... 128
Call Mute................................................................................................................. 129
Call Hold/Resume................................................................................................... 130
Do Not Disturb (DND)............................................................................................. 130
Call Forward ........................................................................................................... 135
Call Transfer ............................................................................................................ 144
Call Waiting............................................................................................................. 146
Conference ............................................................................................................. 147
Local Conference ................................................................................................... 147

Table of Contents
xi
Network Conference.............................................................................................. 148
Call Park .................................................................................................................. 150
Call Pickup............................................................................................................... 151
Anonymous Call ..................................................................................................... 155
Anonymous Call Rejection..................................................................................... 156
Advanced Phone Features...........................................159
Busy Lamp Field (BLF)............................................................................................ 159
BLF List ..................................................................................................................... 162
Call Recording ........................................................................................................ 163
Hot Desking............................................................................................................. 166
Intercom................................................................................................................... 168
Outgoing Intercom Calls ....................................................................................... 168
Incoming Intercom Calls........................................................................................ 169
Using Intercom........................................................................................................ 171
Multicast Paging..................................................................................................... 171
Sending RTP Stream............................................................................................... 171
Receiving RTP Stream ............................................................................................ 175
Using Multicast Paging .......................................................................................... 177
Music on Hold......................................................................................................... 178
Automatic Call Distribution (ACD)........................................................................ 179
Shared Call Appearance (SCA) .......................................................................... 181
Configuring SCA Feature on the IP Phone........................................................... 182
Using SCA Feature on the IP Phone ..................................................................... 189
Bridged Line Appearance (BLA) .......................................................................... 198
Configuring BLA Feature on the IP Phone............................................................ 199
Using BLA Feature on the IP Phone ...................................................................... 202
Messages................................................................................................................ 204
Short Message Service (SMS) ............................................................................. 204
Voice Mail................................................................................................................ 207
Message Waiting Indicator (MWI)....................................................................... 209
Troubleshooting ............................................................213
Regulatory Notices .......................................................223
Service Agreements .............................................................................................. 223
Limitations of Liability............................................................................................. 223
Safety Instructions .................................................................................................. 223
Appendix A - Time Zones .............................................225
Index .............................................................................227

User Guide for the SIP-T48G IP Phone
xii

Overview
13
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
14
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
The screen is touch-sensitive. Tap to select and highlight
screen items.
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 config 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 within text you’re updating.
Enable or disable fields.
Turn pages or scroll through values for a field.
Scroll through items.
Access to History and Directory respectively.
Confirms actions or answers incoming calls.
Cancels actions or rejects incoming calls.
⑪
Volume Key
Adjusts the volume of the handset, headset,
speakerphone and ringer.
⑫
Keypad
Provides the digits, letters and special characters in
context-sensitive applications.
⑬
Speaker
Provides ringer and hands-free (speakerphone) audio
output.
⑭
Hookswitch Tab
Secures the handset in the handset cradle when the IP
phone is mounted vertically. For more information on
how to adjust the hookswitch tab, refer to Yealink Wall
Mount Quick Installation Guide for Yealink IP Phones .
⑮
Hookswitch
Picking up the handset from the handset cradle, the
hookswitch bounces and the phone connects to the line,
laying the handset down on the handset cradle, the
phone disconnects from the line.

Overview
15
Icons appearing on the touch screen are described in the following table:
Icons
Description
Network is unavailable
The private line registers successfully
Register failed
(Flashing)
Registering
The shared/bridged line registers successfully
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
Text Message
Auto Answer
Do Not Disturb
Call Forward
Call Hold
Call Mute

User Guide for the SIP-T48G IP Phone
16
Icons
Description
Ringer volume is 0
Phone Lock
Received Calls
Placed Calls
Missed Calls
Forwarded Calls
Recording box is full
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
The icons of DSS key appearing on the touch screen are described in the following
table:
Icons
Description
ACD
The ACD status is available
The ACD status is unavailable
Log out the ACD system
Voice Mail

Overview
17
Icons
Description
Direct Pickup
Group Pickup
Call Park
Park successfully
Park failed
Call Park idle state
Call park ringing state
Intercom
DTMF
Prefix
Local Group
XML Group
XML Browser
LDAP
Conference
Forward
Transfer
Hold
DND
ReCall
SMS
Record
URL Record
Recording starts successfully(Record/URL Record)

User Guide for the SIP-T48G IP Phone
18
Icons
Description
Multicast Paging
Group Listening
Paging List
Hot Desking
Zero Touch
URL
Phone Lock
Directory
BLF
BLF List
BLF/BLF List failed state
BLF/BLF list ringing state
BLF/BLF list hold state
BLF/BLF list calling state
BLF/BLF list call park state
Speed Dial
Icon indicator (associated with a shared line)
The local SCA phone indicates the phone is involved in an SCA call, while the
monitoring SCA phone indicates the phone is not involved in the SCA call.
Icon
Description
The shared line is idle.
(for monitoring SCA phone)
The shared line is seized.
(Flash)
The shared line receives an incoming call.
(Flash)
The shared line is dialing.