Yealink SIP-T4X, SIP-T42G, SIP-T41P Administration Manual
T4X IP Phone
Administrator Guide
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
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damages arising from use of an illegally modified or altered publication.
THE SPECIFICATIONS AND INFORMATION REGARDING THE PRODUCTS IN THIS GUIDE ARE
SUBJECT TO CHANGE WITHOUT NOTICE. ALL STATEMENTS, INFORMATION, AND
RECOMMENDATIONS IN THIS GUIDE ARE BELIEVED TO BE ACCURATE AND PRESENTED
WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED. USERS MUST TAKE FULL
RESPONSIBILITY FOR THEIR APPLICATION OF PRODUCTS.
YEALINK NETWORK TECHNOLOGY CO., LTD. MAKES NO WARRANTY OF ANY KIND WITH
REGARD TO THIS GUIDE, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. Yealink Network Technology
CO., LTD. shall not be liable for errors contained herein nor for incidental or consequential
damages in connection with the furnishing, performance, or use of this guide.
Hereby, Yealink Network Technology CO., LTD. declares that this phone is in conformity
with the essential requirements and other relevant provisions of the CE, FCC.
This device is marked with the CE mark in compliance with EC Directives 2006/95/EC and 2004/108/EC.
This device is compliant with Part 15 of the FCC Rules. Operation is subject to the following two conditions:
1. This device may not cause harmful interference, and
2. This device must accept any interference received, including interference that may cause undesired
operation.
Note: This device is tested and complies with the limits for a Class B digital device, pursuant to Part 15 of the
FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a
residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not
installed and used in accordance with the instructions, may cause harmful interference to radio
communications. However, there is no guarantee that interference will not occur in a particular installation. If
this equipment does cause harmful interference to radio or television reception, which can be determined
by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more
of the following measures:
1. Reorient or relocate the receiving antenna.
2. Increase the separation between the equipment and receiver.
3. Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
4. Consult the dealer or an experience radio/TV technician for help.
To avoid the potential effects on the environment and human health as a result of the
presence of hazardous substances in electrical and electronic equipment, end users of
electrical and electronic equipment should understand the meaning of the crossed-out
wheeled bin symbol. Do not dispose of WEEE as unsorted municipal waste and have to
collect such WEEE separately.
We are striving to improve our documentation quality and we appreciate your feedback. Email
your opinions and comments to DocsFeedback@yealink.com.
Yealink SIP-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’s performance in the network. So an understanding of the IP networking
and prior knowledge of IP telephony concepts are necessary.
This guide covers 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 72 or higher.
The firmware format is like x.x.x.x.rom. The second x from left should be greater than or
equal to 72 (e.g., the firmware version of SIP-T46G IP phone: 28.72.0.10.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.
The following sections are new for this version:
Power Indicator LED on page 36
Contrast on page 38
Major updates have occurred to the following sections:
DHCP on page 18
Backlight on page 41
Time and Date on page 47
Key as Send on page 59
Anonymous Call on page 75
Busy Lamp Field on page 136
Action URL on page 156
IPv6 Support on page 187
Transport Layer Security on page 203
About This Guide
vii
Major updates have occurred to the following section:
Language on page 52
Major updates have occurred to the following sections:
Language on page 52
Anonymous Call on page 75
Major updates have occurred to the following sections:
Backlight on page 41
Language on page 52
Logo Customization on page 55
Anonymous Call on page 75
Action URL on page 156
Action URI on page 159
Audio Codecs on page 193
Major updates have occurred to the following sections:
Language on page 52
Auto Answer on page 72
Audio Codecs on page 193
Encrypting Configuration Files on page 211
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 55
Administrator’s Guide for SIP-T4X IP Phones
viii
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 25
Language on page 52
Remote Phone Book on page 131
Server Redundancy on page 162
Audio Codecs on page 193
Transport Layer Security on page 203
Secure Real-Time Transport Protocol on page 209
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
Major updates have occurred to the following sections:
Reading Icons on page 16
PPPoE on page 24
Backlight on page 41
Language on page 52
Call Completion on page 74
TR-069 Device Management on page 185
IPv6 Support on page 187
Audio Codecs on page 193
Upgrading Firmware on page 215
Configuring DSS Key on page 381
Table of Contents
ix
About This Guide ...................................................................... v
Documentations ............................................................................................................................... v
In This Guide .................................................................................................................................... v
Summary of Changes .................................................................................................................... vi
Changes for Release 72, Guide Version 72.1 ........................................................................ vi
Changes for Release 71.0, Guide Version 71.181 ................................................................ vii
Changes for Release 71.0, Guide Version 71.180 ................................................................ vii
Changes for Release 71.0, Guide Version 71.171 ................................................................ vii
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 ................................................................. viii
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 ........................................................................ 21
PPPoE ....................................................................................................................................... 24
Configuring Transmission Methods of the Internet Port and PC Port ................................. 25
Creating Dial Plan ......................................................................................................................... 28
Administrator’s Guide for SIP-T4X IP Phones
x
Replace Rule ........................................................................................................................... 29
Dial-now .................................................................................................................................. 30
Area Code............................................................................................................................... 32
Block Out ................................................................................................................................. 33
Configuring Basic Features .................................................... 35
Power Indicator LED ...................................................................................................................... 36
Contrast .......................................................................................................................................... 38
Wallpaper ....................................................................................................................................... 39
Backlight ......................................................................................................................................... 41
User Password ............................................................................................................................... 42
Administrator Password ................................................................................................................ 43
Phone Lock ..................................................................................................................................... 44
Time and Date ............................................................................................................................... 47
Language ....................................................................................................................................... 52
Loading Language Packs ...................................................................................................... 53
Specifying the Language to Use........................................................................................... 54
Logo Customization ....................................................................................................................... 55
Softkey Layout................................................................................................................................ 56
Key as Send ................................................................................................................................... 59
Hotline ............................................................................................................................................ 61
Call Log ........................................................................................................................................... 63
Missed Call Log ............................................................................................................................. 64
Local Directory ............................................................................................................................... 65
Live Dialpad ................................................................................................................................... 68
Call Waiting .................................................................................................................................... 68
Auto Redial ..................................................................................................................................... 70
Auto Answer ................................................................................................................................... 72
Call Completion ............................................................................................................................. 74
Anonymous Call ............................................................................................................................. 75
Anonymous Call Rejection ............................................................................................................ 77
Do Not Disturb ................................................................................................................................ 79
Busy Tone Delay ............................................................................................................................. 83
Return Code When Refuse ............................................................................................................ 84
Early Media .................................................................................................................................... 85
180 Ring Workaround .................................................................................................................... 86
Use Outbound Proxy in Dialog ..................................................................................................... 87
SIP Session Timer ........................................................................................................................... 88
Session Timer ................................................................................................................................. 89
Call Hold ......................................................................................................................................... 90
Call Forward .................................................................................................................................. 92
Call Transfer ................................................................................................................................... 98
Network Conference ................................................................................................................... 100
Transfer on Conference Hang Up .............................................................................................. 101
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xi
Directed Call Pickup .................................................................................................................... 102
Group Call Pickup ........................................................................................................................ 105
Dialog-Info Call Pickup ................................................................................................................ 108
Call Return .................................................................................................................................... 110
Call Park ....................................................................................................................................... 111
Web Server Type.......................................................................................................................... 112
Calling Line Identification Presentation ..................................................................................... 114
Connected Line Identification Presentation .............................................................................. 115
DTMF ............................................................................................................................................. 116
Suppress DTMF Display .............................................................................................................. 119
Transfer via DTMF ........................................................................................................................ 120
Intercom ........................................................................................................................................ 121
Outgoing Intercom Calls ...................................................................................................... 121
Incoming Intercom Calls ...................................................................................................... 122
Configuring Advanced Features...........................................125
Distinctive Ring Tones .................................................................................................................. 125
Tones ............................................................................................................................................. 129
Remote Phone Book .................................................................................................................... 131
LDAP .............................................................................................................................................. 133
Busy Lamp Field ........................................................................................................................... 136
Music on Hold .............................................................................................................................. 141
Automatic Call Distribution ......................................................................................................... 142
Message Waiting Indicator ........................................................................................................ 144
Multicast Paging .......................................................................................................................... 147
Sending RTP Stream ............................................................................................................. 147
Receiving RTP Stream .......................................................................................................... 149
Call Recording ............................................................................................................................. 151
Hot Desking .................................................................................................................................. 155
Action URL .................................................................................................................................... 156
Action URI ..................................................................................................................................... 159
Server Redundancy ..................................................................................................................... 162
SIP Server Domain Name Resolution .................................................................................. 164
LLDP ............................................................................................................................................... 167
VLAN ............................................................................................................................................. 170
VPN ................................................................................................................................................ 174
Quality of Service ........................................................................................................................ 176
Network Address Translation ..................................................................................................... 178
802.1X Authentication ................................................................................................................. 180
TR-069 Device Management ...................................................................................................... 185
IPv6 Support ................................................................................................................................. 187
Configuring Audio Features ..................................................191
Administrator’s Guide for SIP-T4X IP Phones
xii
Headset Prior ............................................................................................................................... 191
Dual Headset ............................................................................................................................... 192
Audio Codecs .............................................................................................................................. 193
Acoustic Clarity Technology ........................................................................................................ 197
Acoustic Echo Cancellation ................................................................................................. 197
Voice Activity Detection ....................................................................................................... 198
Comfort Noise Generation .................................................................................................. 199
Jitter Buffer ............................................................................................................................ 200
Configuring Security Features ...............................................203
Transport Layer Security .............................................................................................................. 203
Secure Real-Time Transport Protocol .......................................................................................... 209
Encrypting Configuration Files ................................................................................................... 211
Upgrading Firmware .............................................................215
Resource Files ........................................................................219
Replace Rule Template ............................................................................................................... 219
Dial-now Template ....................................................................................................................... 220
Softkey Layout Template ............................................................................................................. 221
Local Contact File ........................................................................................................................ 223
Remote XML Phone Book ............................................................................................................ 224
Directory Template ...................................................................................................................... 226
Super Search Template ............................................................................................................... 227
Specifying the Access URL of Resource Files ............................................................................ 228
Troubleshooting .....................................................................231
Troubleshooting Methods ........................................................................................................... 231
Viewing Log Files .................................................................................................................. 231
Capturing Packets ................................................................................................................ 234
Enabling the Watch Dog Feature ........................................................................................ 234
Getting Information from Status Indicators ........................................................................ 235
Analyzing Configuration Files ............................................................................................. 235
Troubleshooting Solutions ........................................................................................................... 236
Why is the LCD screen blank? ............................................................................................. 236
Why doesn’t the IP phone get an IP address? ................................................................... 236
How do I find the basic information of the IP phone? ....................................................... 237
Why doesn’t the IP phone upgrade firmware successfully? ............................................. 237
Why doesn’t the IP phone display time and date correctly? ........................................... 237
Why do I get poor sound quality during a call? ................................................................ 237
What is the difference between a remote phone book and a local phonebook? ........ 238
What is the difference between user name, register name and display name? .......... 238
Table of Contents
xiii
How to reboot IP phone remotely? ..................................................................................... 238
How to increase or decrease the volume? ........................................................................ 238
What will happen if I connect both PoE cable and power adapter? Which has the higher
priority? .................................................................................................................................. 239
What is auto provisioning? .................................................................................................. 239
What is PnP? .......................................................................................................................... 239
Why doesn’t the IP phone update the configuration? ...................................................... 239
What do “on code” and “off code” mean? ....................................................................... 239
How to solve the IP conflict problem? ................................................................................ 240
How to reset your phone to factory configurations? ......................................................... 240
How to restore the administrator password? .................................................................... 241
Appendix ...............................................................................243
Appendix A: Glossary ................................................................................................................. 243
Appendix B: Time Zones ............................................................................................................. 245
Appendix C: Configuration Parameters .................................................................................... 248
Setting Parameters in Configuration Files .......................................................................... 248
Basic and Advanced Feature Parameters ......................................................................... 248
Audio Feature Parameters ................................................................................................... 359
Upgrading Firmware ........................................................................................................... 371
Resource Files ....................................................................................................................... 374
Troubleshooting .................................................................................................................... 379
Configuring DSS Key ............................................................................................................ 381
Appendix D: SIP (Session Initiation Protocol) ............................................................................ 396
RFC and Internet Draft Support .......................................................................................... 396
SIP Request ............................................................................................................................ 399
SIP Header ............................................................................................................................ 400
SIP Responses ....................................................................................................................... 401
SIP Session Description Protocol (SDP) Usage .................................................................. 403
Appendix E: SIP Call Flows ......................................................................................................... 404
Successful Call Setup and Disconnect ............................................................................... 405
Unsuccessful Call Setup—Called User is Busy .................................................................. 407
Unsuccessful Call Setup—Called User Does Not Answer ................................................ 410
Successful Call Setup and Call Hold .................................................................................. 412
Successful Call Setup and Call Waiting ............................................................................. 414
Call Transfer without Consultation ...................................................................................... 419
Call Transfer with Consultation ............................................................................................ 423
Always Call Forward ............................................................................................................ 428
Busy Call Forward ................................................................................................................ 432
No Answer Call Forward ..................................................................................................... 435
Call Conference .................................................................................................................... 438
Appendix F: Sample Configuration File .................................................................................... 443
Index ......................................................................................449
Administrator’s Guide for SIP-T4X IP Phones
xiv
Product Overview
1
This chapter contains the following information about SIP-T4X IP phones:
VoIP Principle
SIP Components
SIP IP Phone Models
VoIP
VoIP (Voice over Internet Protocol) is a technology using the Internet Protocol instead of
traditional Public Switch Telephone Network (PSTN) technology for voice
communications.
It is a family of technologies, methodologies, communication protocols, and
transmission techniques for the delivery of voice communications and multimedia
sessions over IP networks. The H.323 and Session Initiation Protocol (SIP) are two
popular VoIP protocols that are found in widespread implementation.
H.323
H.323 is a recommendation from the ITU Telecommunication Standardization Sector
(ITU-T) that defines the protocols to provide audio-visual communication sessions on
any packet network. The H.323 standard addresses call signaling and control,
multimedia transport and control, and bandwidth control for point-to-point and
multi-point conferences.
It is widely implemented by voice and video conference equipment manufacturers, is
used within various Internet real-time applications such as GnuGK and NetMeeting and
is widely deployed by service providers and enterprises for both voice and video
services over IP networks.
SIP
SIP (Session Initiation Protocol) is the Internet Engineering Task Force’s (IETF’s) standard
for multimedia conferencing over IP. It is an ASCII-based, application-layer control
protocol (defined in RFC 3261) that can be used to establish, maintain, and terminate
calls between two or more endpoints. Like other VoIP protocols, SIP is designed to
address the functions of signaling and session management within a packet telephony
network. Signaling allows call information to be carried across network boundaries.
Session management provides the ability to control the attributes of an end-to-end call.
Administrator’s Guide for SIP-T4X IP Phones
2
SIP provides capabilities to:
Determine the location of the target endpoint -- SIP supports address resolution,
name mapping, and call redirection.
Determine the media capabilities of the target endpoint -- Via Session Description
Protocol (SDP), SIP determines the “lowest level” of common services between
endpoints. Conferences are established using only the media capabilities that can
be supported by all endpoints.
Determine the availability of the target endpoint -- A call cannot be completed
because the target endpoint is unavailable. SIP determines whether the called
party is already on the IP phone or does not answer in the allotted number of rings.
It then returns a message indicating why the target endpoint is unavailable.
Establish a session between the origin and target endpoint -- The call can be
completed, SIP establishes a session between endpoints. SIP also supports mid-call
changes, such as the addition of another endpoint to the conference or the change
of a media characteristic or codec.
Handle the transfer and termination of calls -- SIP supports the transfer of calls from
one endpoint to another. During a call transfer, SIP simply establishes a session
between the transferee and a new endpoint (specified by the transferring party)
and terminates the session between the transferee and the transferring party. At
the end of a call, SIP terminates the sessions between all parties.
SIP is a peer-to-peer protocol. The peers in a session are called User Agents (UAs). A
user agent can function as one of the following roles:
User Agent Client (UAC) -- A client application that initiates the SIP request.
User Agent Server (UAS) -- A server application that contacts the user when a SIP
request is received and that returns a response on behalf of the user.
User Agent Client (UAC)
The UAC is an application that initiates up to six feasible SIP requests to the UAS. The six
requests issued by the UAC are: INVITE, ACK, OPTIONS, BYE, CANCEL and REGISTER.
When the SIP session is being initiated by the UAC SIP component, the UAC determines
the information essential for the request, which is the protocol, the port and the IP
address of the UAS to which the request is being sent. This information can be dynamic
and will make it challenging to put through a firewall. For this reason, it may be
recommended to open the specific application type on the firewall. The UAC is also
capable of using the information in the request URI to establish the course of the SIP
request to its destination, as the request URI always specifies the host which is essential.
The port and protocol are not always specified by the request URI. Thus if the request
does not specify a port or protocol, a default port or protocol is contacted. It may be
Product Overview
3
preferential to use this method when not using an application layer firewall. Application
layer firewalls like to know what applications are flowing though which ports and it is
possible to use content types of other applications other than the one you are trying to
let through what has been denied.
User agent server (UAS)
UAS is a server that hosts the application responsible for receiving the SIP requests from
a UAC, and on reception it returns a response to the request back to the UAC. The UAS
may issue multiple responses to the UAC, not necessarily a single response.
Communication between UAC and UAS is client/server and peer-to–peer.
Typically, a SIP endpoint is capable of functioning as both a UAC and a UAS, but it
functions only as one or the other per transaction. Whether the endpoint functions as a
UAC or a UAS depends on the UA that initiates the request.
This section introduces the SIP-T4X IP phone family. SIP-T4X IP phones are endpoints in
the overall network topology, which are designed to interoperate with other compatible
equipments including application servers, media servers, internet-working gateways,
voice bridges, and other endpoints. SIP-T4X IP phones are characterized by a large
number of functions, which simplify business communication with a high standard of
security and can work seamlessly with a large number of SIP PBXs.
SIP-T4X IP phones provide a powerful and flexible IP communication solution for Ethernet
TCP/IP networks, delivering excellent voice quality. The high-resolution graphic display
supplies content in multiple languages for system status, call log and directory access.
SIP-T4X IP phones also support advanced functionalities, including LDAP, Busy Lamp
Field, Sever Redundancy and Network Conference.
The following IP phone models are described:
SIP-T46G
SIP-T42G
SIP-T41P
SIP-T4X IP phones comply with the SIP standard (RFC 3261), and they can only be used
within a network that supports this type of phone.
In order to operate as SIP endpoints in your network successfully, SIP-T4X IP phones must
meet the following requirements:
A working IP network is established.
Routers are configured for VoIP.
VoIP gateways are configured for SIP.
The latest (or compatible) firmware of SIP-T4X IP phones is available.
Administrator’s Guide for SIP-T4X IP Phones
4
A call server is active and configured to receive and send SIP messages.
This section lists the available physical features of SIP-T4X IP phones.
SIP-T46G
Physical Features:
- 4.3” TFT-LCD, 480 x 272 pixel, 16.7M colors
- 6 VoIP accounts, BroadSoft/Avaya/Asterisk validated
- HD Voice: HD Codec, HD Handset, HD Speaker
- 41 keys including 10 line keys
- 1xRJ9 (4P4C) handset port
- 1xRJ9 (4P4C) headset port
- 2xRJ45 10/100/1000Mbps Ethernet ports
- 1XRJ12 (6P6C) expansion module port
- 14 LEDs: 1xpower, 10xline, 1xmute, 1xheadset, 1xspeakerphone
- Power adapter: AC 100~240V input and DC 5V/2A output
- Power over Ethernet (IEEE 802.3af)
- Built-in USB port, support Bluetooth headset
Product Overview
5
SIP-T42G
Physical Features:
- 192 x 64 graphic LCD
- 3 VoIP accounts, BroadSoft/Avaya/Asterisk validated
- HD Voice: HD Codec, HD Handset, HD Speaker
- 35 keys including 6 line keys
- 1xRJ9 (4P4C) handset port
- 1xRJ9 (4P4C) headset port
- 2xRJ45 10/100/1000Mbps Ethernet ports
- 1XRJ12 (6P6C) EHS36 headset adapter port
- 10 LEDs: 1xpower, 6xline, 1xmute, 1xheadset, 1xspeakerphone
- Power adapter: AC 100~240V input and DC 5V/1.2A output
- Power over Ethernet (IEEE 802.3af)
Administrator’s Guide for SIP-T4X IP Phones
6
SIP-T41P
Physical Features:
- 192 x 64 graphic LCD
- 3 VoIP accounts, BroadSoft/Avaya/Asterisk validated
- HD Voice: HD Codec, HD Handset, HD Speaker
- 35 keys including 6 line keys
- 1xRJ9 (4P4C) handset port
- 1xRJ9 (4P4C) headset port
- 2xRJ45 10/100Mbps Ethernet ports
- 1XRJ12 (6P6C) EHS36 headset adapter port
- 10 LEDs: 1xpower, 6xline, 1xmute, 1xheadset, 1xspeakerphone
- Power adapter: AC 100~240V input and DC 5V/1.2A output
- Power over Ethernet (IEEE 802.3af)
In addition to physical features introduced above, SIP-T4X IP phones also support the
following key features when running the latest firmware:
Phone Features
- Call Options: emergency call, call waiting, call hold, call mute, call forward,
call transfer, call pickup, conference.
- Basic Features: DND, phone lock, auto redial, live dialpad, dial plan, hotline,
Product Overview
7
caller identity, auto answer.
- Advanced Features: BLF, server redundancy, distinctive ring tones, remote
phone book, LDAP, 802.1x authentication.
Codecs and Voice Features
- Wideband codec: G.722
- Narrowband codec: G.711, G.723.1, G.726, G.729AB, GSM, iLBC .
- VAD, CNG, AEC, PLC, AJB, AGC
- Full-duplex speakerphone with AEC
Network Features
- SIP v1 (RFC2543), v2 (RFC3261)
- IPv4/IPv6 support
- NAT Traversal: STUN mode
- DTMF: INBAND, RFC2833, SIP INFO
- Proxy mode and peer-to-peer SIP link mode
- IP assignment: Static/DHCP/PPPoE (for SIP-T46G only)
- TFTP/DHCP client
- HTTP/HTTPS server
- DNS client
- NAT/DHCP server
Management
- FTP/TFTP/HTTP/PnP auto-provision
- Configuration: browser/phone/auto-provision
- Direct IP call without SIP proxy
- Dial number via SIP server
- Dial URL via SIP server
Security
- HTTPS (server/client)
- SRTP (RFC3711)
- Transport Layer Security (TLS)
- VLAN (802.1q), QoS
- Digest authentication using MD5/MD5-sess
- Secure configuration file via AES encryption
- Phone lock for personal privacy protection
- Admin/User configuration mode
Administrator’s Guide for SIP-T4X IP Phones
8
Getting Started
9
This chapter provides basic information and installation instructions of SIP-T4X IP phones.
This chapter provides the following sections:
Connecting the IP Phone
Initialization Process Overview
Verifying Startup
Configuration Methods
Reading Icons
Configuring Basic Network Parameters
Creating Dial Plan
This section introduces how to install SIP-T4X IP phones with the components in
packaging contents.
1. Attach the stand
2. Connect the handset and optional headset
3. Connect the network and power
Note
A headset, wall mount bracket and power adapter are not included in packaging
contents.
Administrator’s Guide for SIP-T4X IP Phones
10
1) Attach the stand:
Desk Mount Method
Wall Mount Method (Optional)
Note
For more information on how to mount the phone to a wall, refer to
Yealink Wall Mount
Quick Installation Guide for SIP-T4X IP Phones
.
Getting Started
11
2) Connect the handset, optional headset and Bluetooth headset:
Note
3) Connect the network and power:
AC power
Power over Ethernet (PoE)
AC Power
To connect the AC power and network:
1. Connect the DC plug of the power adapter to the DC5V port on IP phones and
connect the other end of the power adapter into an electrical power outlet.
2. Connect the included or a standard Ethernet cable between the Internet port on IP
phones and the one on the wall or switch/hub device port.
Wireless headset adapter EHS36 and Bluetooth USB dongle should be purchased
separately.
For more information on how to use the EHS36 on the IP phone, refer to
Yealink EHS36
User Guide.
Bluetooth can only be used on SIP-T46G IP phones. For more information on how to use
the Bluetooth on SIP-T46G IP phones, refer to
Yealink Bluetooth USB Dongle BT40 User
Guide
.
EXT port can also be used to connect the expansion module EXP40. For more information
on how to connect EXP40, refer to
Yealink EXP40 User Guide
.
Administrator’s Guide for SIP-T4X IP Phones
12
Power over Ethernet
With the included or a regular Ethernet cable, IP phones can be powered from a
PoE-compliant switch or hub.
To connect the PoE:
1. Connect the Ethernet cable between the Internet port on IP phones and an
available port on the in-line power switch/hub.
Note
The initialization process of IP phones is responsible for network connectivity and
operation of IP phones in your local network.
Once you connect your IP phone to the network and to an electrical supply, the IP phone
begins its initialization process.
During the initialization process, the following events proceed:
Loading the ROM file
The ROM file resides in the flash memory of IP phones. IP phones come from the factory
with a ROM file preloaded. During initialization, IP phones run a bootstrap loader that
loads and executes the ROM file.
Configuring the VLAN
If IP phones are connected to a switch, the switch notifies IP phones of the VLAN
information defined on the switch (if using LLDP). IP phones can then proceed with the
If in-line power switch/hub is provided, you don’t need to connect the phone to the power
adapter. Make sure the switch/hub is PoE-compliant.
IP phones can also share the network with another network device such as a PC
(personal computer). It is an optional connection.
Important! Do not unplug or remove the power while IP phones are updating firmware
and configurations.
Getting Started
13
DHCP request for its network settings (if using DHCP).
Querying the DHCP (Dynamic Host Configuration Protocol) Server
IP phones are capable of querying a DHCP server. DHCP is enabled on IP phones by
default. The following network parameters can be obtained from the DHCP server
during initialization:
IP Address
Subnet Mask
Gateway
Primary DNS (Domain Name Server)
Secondary DNS
You need to configure the network parameters of IP phones manually if any of them is
not supplied by the DHCP server. For more information on configuring network
parameters manually, refer to Configuring Network Parameters Manually on page 21.
Contacting the auto provisioning server
SIP-T4X IP phones support the FTP, TFTP, HTTP, and HTTPS protocols for auto provisioning
and are configured by default to use TFTP protocol. If IP phones are configured to obtain
configurations from the TFTP server, they will connect to the TFTP server and download
the configuration file(s) during startup. IP phones will be able to resolve and apply the
configurations written in the configuration file(s). If IP phones do not obtain the
configurations from the TFTP server, IP phones will use the configurations stored in the
flash memory.
Updating firmware
If the access URL of the firmware is defined in the configuration file, the IP phone will
download the firmware from the provisioning server. If the MD5 value of the
downloaded firmware file differs from that of the image stored in the flash memory, the
IP phone will perform a firmware update.
Downloading the resource files
In addition to configuration file(s), IP phones may require resource files before it can
deliver service. These resource files are optional, but if some particular features are
being deployed, these files are required.
The followings show examples of resource files:
Language packs
Ring tones
Contact files
Administrator’s Guide for SIP-T4X IP Phones
14
After connected to the power and network, the IP phone begins the initializing process
by cycling through the following steps:
1. The power indicator LED illuminates.
2. The message “Initializing…Please wait” appears on the LCD screen when the IP
phone starts up.
3. The main LCD screen displays the following:
Time and date
Soft key labels
4. Press the OK key to check the IP phone status, the LCD screen displays the valid IP
address, MAC address, firmware version, etc.
If the IP phone has successfully passed through these steps, it starts up properly and is
ready for use.
You can use the following methods to set up and configure IP phones:
Phone User Interface
Web User Interface
Configuration Files
The following sections describe how to configure IP phones using each method above.
An administrator or a user can configure and use IP phones via phone user interface.
Specific features access is restricted to the administrator. These specific features are
password protected by default. The default password is “admin“(case-sensitive). Not
all features are available on phone user interface.
An administrator or a user can configure IP phones via web user interface. The default
user name and password for the administrator to log into the web user interface are
both “admin” (case-sensitive). Almost all features are available for configuring via web
user interface. IP phones support both HTTP and HTTPS protocols for accessing the web
user interface. For more information, refer to Web Server Type on page 112.
Getting Started
15
You can deploy IP phones using configuration files. There are two configuration files
both of which are CFG formatted. We call them Common CFG file and MAC-Oriented
CFG file. A Common CFG file will be effectual for all IP phones of the same model.
However, a MAC-Oriented CFG file will only be effectual for a specific IP phone. The
Common CFG file has a fixed name for each IP phone model, while the MAC-Oriented
CFG file is named as the MAC address of IP phones. For example, if the MAC address of
a SIP-T46G IP phone is 001565113af5, the names of these two configuration files must be:
y000000000028.cfg and 001565113af5.cfg.
The name of the Common CFG file for each SIP-T4X IP phone model is:
SIP-T46G: y000000000028.cfg
SIP-T42G: y000000000029.cfg
SIP-T41P: y000000000036.cfg
In order to deploy IP phones using configuration files (<y0000000000xx>.cfg and
<MAC>.cfg), you need to use a text-based editing application to edit the configuration
files, and store configuration files to a provisioning server. IP phones support
downloading configuration files using any of the following protocols: FTP, TFTP, HTTP and
HTTPS.
IP phones can obtain the address of the provisioning server during startup through one
of the following processes: Zero Touch, PnP, DHCP Options and Phone Flash. Then IP
phones download configuration files from the provisioning server, resolve and update
the configurations written in the configuration files. This entire process is called auto
provisioning. For more information on auto provisioning, refer to
Yealink_SIP-T2
Series_T19P_T4_Series_IP_Phones_Auto_Provisioning_Guide
.
When modifying parameters, learn the following:
Parameters in configuration files override those stored in IP phones’ flash memory.
The .cfg extension of the configuration files must be in lowercase.
Each line in a configuration file must use the following format and adhere to the
following rules:
variable-name = value
- Associate only one value with one variable.
- Separate variable name and value with equal sign.
- Set only one variable per line.
- Put the variable and value on the same line, and do not break the line.
- Comment the variable on a separated line. Use the pound (#) delimiter to
distinguish the comments.
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