Yealink SIP-T4X Service manual

Copyright © 2013 YEALINK NETWORK TECHNOLOGY
Copyright © 2013 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 [e-mail].

Yealink SIP-T4X 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
The guide is intended for administrators who need to properly configure, customize,
manage, and troubleshoot the IP phone system rather than the end-users. It provides
details on the functionality and configuration of SIP-T4X IP phones.
Many of the features described in this guide involve network settings, which could affect
the IP phone performance in the network. So an understanding of the IP networking and
prior knowledge of IP telephony concepts are necessary.
This guide covers the SIP-T46G, T42G and T41P IP phones. The following related
documents for SIP-T4X IP phones are available:
Quick Installation Guides, which describe how to assemble IP phones.
Quick Reference Guides, which describe the most basic features available on IP
phones.
User Guides, which describe basic and advanced features available on IP phones.
Auto Provisioning Deployment Guide, which describes how to provision IP phones
using the configuration files.
Configuration Conversion Tool User Guide, which describes how to convert and
encrypt the configuration files using the Configuration Conversion Tool.
<y0000000000xx>.cfg and <MAC>.cfg template configuration files.
IP Phones Deployment Guide for BroadSoft UC-One Environments, which describes
how to configure the BroadSoft features on the BroadWorks web portal and IP
phones.
For support or service, please contact your Yealink reseller or go to Yealink Technical
Support online: http://www.yealink.com/Support.aspx.
The information detailed in this guide is applicable to the firmware version 71 or higher.
The firmware format is like x.x.x.x.rom. The second x from left should be greater than or
equal to 71(e.g., the firmware version of SIP-T46G IP phone: [phone].rom). This
administrator guide includes the following chapters:
Chapter 1, ―Product Overview‖describes SIP components and SIP IP phones.
Chapter 2, ―Getting Started‖describes how to install and connect IP phones and
configuration methods.

Administrator’s Guide for SIP-T4X IP Phones
vi
Chapter 3, ―Configuring Basic Features‖describes how to configure basic features
on IP phones.
Chapter 4, ―Configuring Advanced Features‖describes how to configure
advanced features on IP phones.
Chapter 5, ―Configuring Audio Features‖describes how to configure audio features
on IP phones.
Chapter 6, ―Configuring Security Features‖describes how to configure security
features on IP phones.
Chapter 7, ―Upgrading Firmware‖describes how to upgrade the firmware of IP
phones.
Chapter 8, ―Resource Files‖describes the resource files that can be downloaded
by IP phones.
Chapter 9, ―Troubleshooting‖describes how to troubleshoot IP phones and
provides some common troubleshooting solutions.
Chapter 10, ―Appendix‖provides the glossary, reference information about IP
phones compliant with RFC 3261, SIP call flows and sample configuration files.
This section describes the changes to this guide for each release and guide version.
Major updates have occurred to the following section:
Language on page 49
Major updates have occurred to the following sections:
Language on page 49
Anonymous Call on page 72
SNMP on page 173
Major updates have occurred to the following sections:
Backlight on page 38
Language on page 49

About This Guide
vii
Logo Customization on page 52
Anonymous Call on page 72
Action URL on page 149
Action URI on page 152
SNMP on page 173
Audio Codecs on page 189
Major updates have occurred to the following sections:
Language on page 49
Auto Answer on page 68
SNMP on page 173
Audio Codecs on page 189
Encrypting Configuration Files on page 207
This version is updated to incorporate T41P as one of the T4X device models. The
following section is new for this version:
Logo Customization on page 52
Major updates have occurred to the following sections:
SIP IP Phone Models on page 3
Configuring Transmission Methods of the Internet Port and PC Port on page 24
Language on page 49
Remote Phone Book on page 125
Server Redundancy on page 155
Audio Codecs on page 189
Transport Layer Security on page 199
Secure Real-Time Transport Protocol on page 205
This version is updated to incorporate T42G as one of the T4X device models. The
following section is new for this version:
SIP IP Phone Models on page 3

Administrator’s Guide for SIP-T4X IP Phones
viii
Major updates have occurred to the following sections:
Reading Icons on page 16
PPPoE on page 23
Backlight on page 38
Language on page 49
Call Completion on page 70
SNMP on page 173
TR-069 Device Management on page 180
IPv6 Support on page 182
Audio Codecs on page 189
Upgrading Firmware on page 211
Configuring DSS Key on page 362

Table of Contents
ix
About This Guide...................................................................v
Documentations...............................................................................................................................v
In This Guide ....................................................................................................................................v
Summary of Changes .................................................................................................................... vi
Changes for Release 71.0, Guide Version 71.181................................................................. vi
Changes for Release 71.0, Guide Version 71.180................................................................. vi
Changes for Release 71.0, Guide Version 71.171................................................................. vi
Changes for Release 71.0, Guide Version 71.170................................................................ vii
Changes for Release 71.0, Guide Version 71.150................................................................ vii
Changes for Release 71.0, Guide Version 71.80.................................................................. vii
Table of Contents .................................................................ix
Product Overview..................................................................1
VoIP Principle....................................................................................................................................1
SIP Components...............................................................................................................................2
SIP IP Phone Models........................................................................................................................3
Physical Features of SIP-T4X IP Phones ...................................................................................4
Key Features of SIP-T4X IP Phones...........................................................................................6
Getting Started .....................................................................9
Connecting the IP Phone.................................................................................................................9
Initialization Process Overview ....................................................................................................12
Verifying Startup ............................................................................................................................14
Configuration Methods.................................................................................................................14
Phone User Interface..............................................................................................................14
Web User Interface ................................................................................................................14
Configuration Files..................................................................................................................15
Reading Icons ................................................................................................................................16
Configuring Basic Network Parameters ......................................................................................18
DHCP .......................................................................................................................................18
Configuring Network Parameters Manually ........................................................................20
PPPoE........................................................................................................................................23
Configuring Transmission Methods of the Internet Port and PC Port .................................24
Creating Dial Plan..........................................................................................................................26
Replace Rule ...........................................................................................................................27

Administrator’s Guide for SIP-T4X IP Phones
x
Dial-now ..................................................................................................................................29
Area Code...............................................................................................................................31
Block Out .................................................................................................................................32
Configuring Basic Features..................................................35
Wallpaper.......................................................................................................................................36
Backlight.........................................................................................................................................38
User Password................................................................................................................................40
Administrator Password ................................................................................................................41
Phone Lock .....................................................................................................................................42
Time and Date ...............................................................................................................................44
Language .......................................................................................................................................49
Loading Language Packs ......................................................................................................50
Specifying the Language to Use...........................................................................................51
Logo Customization .......................................................................................................................52
Softkey Layout................................................................................................................................53
Key as Send ...................................................................................................................................56
Hotline ............................................................................................................................................58
Call Log...........................................................................................................................................60
Missed Call Log .............................................................................................................................61
Local Directory ...............................................................................................................................62
Live Dialpad...................................................................................................................................65
Call Waiting....................................................................................................................................65
Auto Redial .....................................................................................................................................67
Auto Answer...................................................................................................................................68
Call Completion.............................................................................................................................70
Anonymous Call.............................................................................................................................72
Anonymous Call Rejection ............................................................................................................73
Do Not Disturb................................................................................................................................75
Busy Tone Delay.............................................................................................................................79
Return Code When Refuse ............................................................................................................80
Early Media....................................................................................................................................81
180 Ring Workaround ....................................................................................................................81
Use Outbound Proxy in Dialog.....................................................................................................82
SIP Session Timer ...........................................................................................................................83
Session Timer .................................................................................................................................84
Call Hold.........................................................................................................................................86
Call Forward ..................................................................................................................................88
Call Transfer ...................................................................................................................................93
Network Conference .....................................................................................................................94
Transfer on Conference Hang Up ................................................................................................95
Directed Call Pickup ......................................................................................................................96
Group Call Pickup..........................................................................................................................99
Dialog-Info Call Pickup................................................................................................................102