Yealink SIP-T48S User manual

Copyright
Copyright © 2016 YEALINK(XIAMEN) NETWORK TECHNOLOGY CO., LTD
Copyright © 2016 Yealink(Xiamen) 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(Xiamen) Network Technology CO., LTD. Under the law, reproducing
includes translating into another language or format.
When this publication is made available on media1, Yealink(Xiamen) 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(Xiamen) Network Technology CO., LTD. will not be liable for any damages
arising from use of an illegally modified or altered publication.
Warranty
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(XIAMEN) 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(Xiamen) 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.
Declaration of Conformity
Hereby, Yealink(Xiamen) Network Technology CO., LTD. declares that this phone is in conformity
with the essential requirements and other relevant provisions of the CE, FCC.
You can find the CE and FCC information from the label on the back of the IP phone.
Statements of compliance can be obtained by contacting suppo[email protected].
CE Mark Warning
This device is marked with the CE mark in compliance with EC Directives 2014/35/EU and
2014/30/EU.

Part 15 FCC Rules
Any changes or modifications not expressly approved by the party responsible for compliance could void
the user's authority to operate the equipment.
This device complies 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.
Industry Canada (IC)
This Class [B] digital apparatus complies with Canadian ICES-003 and ICCS-03 Part V Rules
Class B Digital Device or Peripheral
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.
WEEE Warning
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.
Customer Feedback
We are striving to improve our documentation quality and we appreciate your feedback. Email
your opinions and comments to [e-mail].

GNU GPL INFORMATION
Yealink SIP-T48S 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
About This Guide
Thank you for choosing the SIP-T48S 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-T48S IP phone.
Note
In This Guide
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
Summary of Changes
This section describes the changes to this guide for each release and guide version.
Changes for Release 81, Guide Version 81.20
Major updates have occurred to the following sections:
Wallpaper on page 41
Screen Saver on page 45
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-T48S IP Phone
vi

Table of Contents
vii
Table of Contents
About This Guide ........................................................................... v
In This Guide ..............................................................................................................................................................v
Summary of Changes .............................................................................................................................................v
Changes for Release 81, Guide Version 81.20..........................................................................................v
Table of Contents.........................................................................vii
Overview .........................................................................................1
Hardware Component Instructions ..................................................................................................................1
Icon Instructions.......................................................................................................................................................3
Feature Status Icons............................................................................................................................................3
Line Key Icons........................................................................................................................................................4
Other Icons.............................................................................................................................................................9
LED Instructions..................................................................................................................................................... 10
User Interfaces ....................................................................................................................................................... 11
Phone User Interface....................................................................................................................................... 11
Web User Interface........................................................................................................................................... 11
Documentations.................................................................................................................................................... 14
Getting Started.............................................................................15
Packaging Contents ............................................................................................................................................. 15
Optional Accessories....................................................................................................................................... 16
Phone Installation ................................................................................................................................................. 18
Network Connection............................................................................................................................................ 21
Connecting to the Wired Network............................................................................................................. 22
Connecting to the Wireless Network........................................................................................................ 22
Phone Initialization............................................................................................................................................... 22
Phone Status........................................................................................................................................................... 23
Basic Network Settings....................................................................................................................................... 24
Wireless Network Settings ................................................................................................................................ 26
Activating the Wi-Fi Mode............................................................................................................................ 27
Connecting to the Wireless Network........................................................................................................ 27
Viewing the Wireless Network Information ........................................................................................... 31
Managing the Saved Wireless Network................................................................................................... 32
Disconnecting the Wireless Network Connection ............................................................................... 33
Deactivating the Wi-Fi Mode....................................................................................................................... 34

User Guide for the SIP-T48S IP Phone
viii
Registration ............................................................................................................................................................. 34
Touch Screen Display .......................................................................................................................................... 35
Navigating Menus and Fields........................................................................................................................... 37
Entering Data and Editing Fields..................................................................................................................... 38
Customizing Your Phone.............................................................41
General Settings .................................................................................................................................................... 41
Wallpaper............................................................................................................................................................. 41
Transparency ...................................................................................................................................................... 44
Screen Saver........................................................................................................................................................ 45
Power Saving...................................................................................................................................................... 49
Backlight............................................................................................................................................................... 52
Contrast ................................................................................................................................................................ 53
Language.............................................................................................................................................................. 54
Time & Date........................................................................................................................................................ 55
Administrator Password................................................................................................................................. 58
Key As Send ........................................................................................................................................................ 59
Phone Lock.......................................................................................................................................................... 59
Audio Settings........................................................................................................................................................ 62
Volume.................................................................................................................................................................. 62
Ring Tones........................................................................................................................................................... 64
Key Tone............................................................................................................................................................... 66
BLF Ring Type..................................................................................................................................................... 67
Contact Management ......................................................................................................................................... 68
Directory............................................................................................................................................................... 68
Local Directory ................................................................................................................................................... 69
Blacklist ................................................................................................................................................................. 87
Remote Phone Book........................................................................................................................................ 89
Call History Management.................................................................................................................................. 90
Viewing History Records................................................................................................................................ 91
Placing a Call from History Records .......................................................................................................... 91
Adding a Contact to the Local Directory/Blacklist............................................................................... 92
Deleting History Records............................................................................................................................... 93
Disabling History Record............................................................................................................................... 95
Search Source List in Dialing ............................................................................................................................ 95
System Customizations....................................................................................................................................... 97
Headset Use........................................................................................................................................................ 97
Bluetooth Headset............................................................................................................................................ 99
DSS Keys.............................................................................................................................................................106
Account Management ..................................................................................................................................118
Dial Plan..............................................................................................................................................................121
Emergency Number.......................................................................................................................................127
Live Dialpad.......................................................................................................................................................128
Hotline.................................................................................................................................................................128

Table of Contents
ix
Basic Call Features......................................................................131
Placing Calls ..........................................................................................................................................................132
Answering Calls....................................................................................................................................................134
Ending Calls...........................................................................................................................................................136
Redialing Numbers.............................................................................................................................................136
Recent Call In Dialing ........................................................................................................................................136
Auto Answer..........................................................................................................................................................138
Auto Redial............................................................................................................................................................139
Call Completion...................................................................................................................................................141
Recall........................................................................................................................................................................142
Call Mute ................................................................................................................................................................143
Mute a Call ........................................................................................................................................................144
Mute While Dialing ........................................................................................................................................144
Keep Mute .........................................................................................................................................................144
Call Hold/Resume ...............................................................................................................................................145
Do Not Disturb (DND).......................................................................................................................................147
Call Forward ..........................................................................................................................................................152
Static Forwarding............................................................................................................................................152
Dynamic Forwarding .....................................................................................................................................161
Call Transfer...........................................................................................................................................................162
Blind Transfer....................................................................................................................................................162
Semi-attended Transfer................................................................................................................................163
Attended Transfer...........................................................................................................................................164
Call Waiting ...........................................................................................................................................................164
Conference ............................................................................................................................................................165
Local Conference ............................................................................................................................................165
Network Conference......................................................................................................................................167
Call Park..................................................................................................................................................................168
FAC Mode ..........................................................................................................................................................169
Transfer Mode..................................................................................................................................................171
Call Pickup .............................................................................................................................................................173
Directed Call Pickup.......................................................................................................................................174
Group Call Pickup ...........................................................................................................................................176
Anonymous Call ..................................................................................................................................................178
Anonymous Call Rejection ..............................................................................................................................179
Advanced Phone Features.........................................................181
Busy Lamp Field (BLF)........................................................................................................................................181
Configuring the BLF Feature on the IP Phone.....................................................................................181
Using BLF Feature on the IP Phone .........................................................................................................186
BLF List ....................................................................................................................................................................188
Call Recording ......................................................................................................................................................189

User Guide for the SIP-T48S IP Phone
x
Recording Using a USB Flash Drive .........................................................................................................190
Recording Using a Record Key..................................................................................................................197
Hot Desking ..........................................................................................................................................................200
Intercom .................................................................................................................................................................202
Configuring the Intercom Feature on the IP Phone..........................................................................202
Using Intercom ................................................................................................................................................205
Multicast Paging..................................................................................................................................................205
Sending RTP Stream......................................................................................................................................206
Receiving RTP Stream ...................................................................................................................................210
Using Multicast Paging.................................................................................................................................211
Music on Hold (MoH)........................................................................................................................................213
Automatic Call Distribution (ACD) ...............................................................................................................214
Shared Call Appearance (SCA).......................................................................................................................216
Configuring SCA Feature on the IP Phone ...........................................................................................217
Using SCA Feature on the IP Phone........................................................................................................223
Bridged Line Appearance (BLA).....................................................................................................................230
Configuring BLA Feature on the IP Phone............................................................................................231
Using BLA Feature on the IP Phone.........................................................................................................234
Messages................................................................................................................................................................236
Short Message Service (SMS).....................................................................................................................236
Voice Mail ..........................................................................................................................................................239
Message Waiting Indicator (MWI) ...........................................................................................................241
Regulatory Notices ....................................................................245
Service Agreements ...........................................................................................................................................245
Limitations of Liability .......................................................................................................................................245
Safety Instructions ..............................................................................................................................................245
Appendix.....................................................................................247
Appendix A –Time Zones................................................................................................................................247
Appendix B –Menu Structure........................................................................................................................249
Index ...........................................................................................251

Overview
1
Overview
This chapter provides the overview of the SIP-T48S 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.
Hardware Component Instructions
The main hardware components of the SIP-T48S IP phone are the touch screen and the keypad.

User Guide for the SIP-T48S IP Phone
2
Hardware component instructions of the SIP-T48S IP phone are:
Item
Description
①
Power Indicator LED
Indicates phone power and some feature statuses.
• Receives an incoming call—Fast flashing
• Receives a voice mail or text message—Slowly flashing
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:
• Default account
• 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 and indicates 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, speaker, ringer or
media.
⑫
Keypad
Provides the digits, letters and special characters in
context-sensitive applications.
⑬
Speaker
Provides 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.

Overview
3
Item
Description
• Laying the handset down on the handset cradle, the phone
disconnects from the line.
Icon Instructions
Feature Status Icons
Icons appearing on the status bar are described in the following table:
Icons
Description
Wired network is unavailable
Hands-free speakerphone mode
Handset mode
Headset mode
Voice Mail
Text Message
Auto Answer
Do Not Disturb (DND)
Keep Mute
Ringer volume is 0
Phone Lock
Missed Calls
Call Forward
Recording starts successfully (Using a USB flash drive)
Recording is paused (Using a USB flash drive)

User Guide for the SIP-T48S IP Phone
4
Icons
Description
Bluetooth mode is on
Bluetooth headset is both paired and connected
Wi-Fi connection is successful
Wi-Fi connection failed
Wired network is unavailable
Line Key Icons
Icon indicator (associated with line key features):
Icons
Description
Hold
Private Hold
DND
Voice Mail
SMS
Direct Pickup
Group Pickup
DTMF
Prefix
Local Group
XML Group
LDAP
XML Browser
Conference
Forward
Transfer

Overview
5
Icons
Description
ReCall
Record
URL Record
Recording starts successfully (Record/URL Record)
Multicast Paging
Group Listening
Paging List
Hot Desking
Zero Touch
URL
Phone Lock
Directory
Speed Dial
Icon indicator (associated with line)
Icons
Description
The private line registers successfully
The shared/bridged line registers successfully
Register failed
(Flashing)
Registering
DND is enabled on this line
Call forward is enabled on this line
Icon indicator (associated with call park/retrieve park)
Icons
Description

User Guide for the SIP-T48S IP Phone
6
Icons
Description
Call Park (Park successfully; Call park idle state)
Call Park (Park failed)
Call Park (Call park ringing state)
Retrieve Park
Icon indicator (associated with BLF/BLF List)
Icons
Description
BLF/BLF List idle state
(Flashing)
BLF/BLF list ringing state
(Flashing)
BLF/BLF list callout state
BLF/BLF list talking state
BLF hold state
BLF list call park state
BLF/BLF List failed state
Note
Icon indicator (associated with intercom)
Icons
Description
Intercom idle state
Intercom ringing state
Callout
Intercom callout state
Talking
Intercom talking state
You can also customize the BLF key LED status and BLF key behavior. Please contact your system
administrator for more information.

Overview
7
Icons
Description
Intercom failed state

User Guide for the SIP-T48S IP Phone
8
Icon indicator (associated with ACD)
Icon
Description
Logged in the ACD system
The ACD status is available
The ACD state is Wrap up
The ACD status is unavailable
Logged out of the ACD system
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.
(Flashing)
The shared line receives an incoming call.
(Flashing)
The shared line is dialing.
The shared line is in conversation.
The shared line conversation is placed on public
hold.
(for local SCA phone)
(for monitoring SCA phone)
The shared line conversation is placed on private
hold.

Overview
9
Icon
Description
The shared line conversation is barged in by the
other shared line party.
For a multi-party call, all the shared line parties
participating in this call place the shared line
conversation on hold.
Icon indicator (associated with a bridged line)
The local BLA phone indicates the phone is involved in a BLA call, while the monitoring BLA
phone indicates the phone is not involved in the BLA call.
Icon
Description
The bridged line is idle.
(for monitoring BLA phone)
The bridged line is seized.
(Flashing)
The bridged line receives an incoming call.
(Flashing)
The bridged line is dialing.
The bridged line is in conversation.
The bridged line conversation is placed on hold.
Other Icons
Icon indicator (associated with call recording)
Icon
Description
Recording box is full (Using a record key)
A call cannot be recorded (Using a record key)
Recording starts successfully (Using a record
key)
Recording cannot be started (Using a record
key)

User Guide for the SIP-T48S IP Phone
10
Icon
Description
Recording cannot be stopped (Using a record
key)
Icon indicator (associated with call history)
Icon
Description
Received Calls
Placed Calls
Missed Calls
Forwarded Calls
Icon indicator (associated with contact)
Icon
Description
The default caller photo and contact icon
LED Instructions
Power Indicator LED
LED Status
Description
Solid red
The phone is initializing.
Fast flashing red
The phone is ringing.
Slowly flashing red
The phone receives a voice mail or text message.
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 muted.
Note
The above introduces the default LED status. The statuses of the power indicator LED and BLF key
LED are configurable via web user interface. You can also customize the BLF key LED status and
BLF key behavior. For more information, contact your system administrator.