Yealink T29G Administrator's Guide

Table of Contents
xiii
Viewing Log Files .................................................................................................................. 523
Capturing Packets ................................................................................................................ 533
Enabling Watch Dog Feature .............................................................................................. 534
Getting Information from Status Indicators ........................................................................ 535
Analyzing Configuration File ............................................................................................... 535
Troubleshooting Solutions ........................................................................................................... 538
Why is the LCD screen blank? ............................................................................................. 538
Why doesn’t the IP phone get an IP address? ................................................................... 538
Why does the IP phone display “No Service”? ................................................................. 539
How do I find the basic information of the IP phone? ....................................................... 539
Why doesn’t the IP phone upgrade firmware successfully? ............................................. 539
Why doesn’t the IP phone display time and date correctly? ........................................... 539
Why do I get poor sound quality during a call? ................................................................ 540
What is the difference between a remote phone book and a local phone book? ....... 540
What is the difference among user name, register name and display name? ............. 540
How to reboot the IP phone remotely? .............................................................................. 540
Why does the IP phone use DOB format logo file instead of popular BMP, JPG and so on?
................................................................................................................................................ 541
How to increase or decrease the volume? ........................................................................ 541
What will happen if I connect both PoE cable and power adapter? Which has the higher
priority? .................................................................................................................................. 541
What is auto provisioning? .................................................................................................. 541
What is PnP? .......................................................................................................................... 541
Why doesn’t the IP phone update the configuration? ...................................................... 542
What do “on code” and “off code” mean? ....................................................................... 542
How to solve the IP conflict problem? ................................................................................ 542
How to reset the IP phone to factory configurations? ....................................................... 542
How to restore the administrator password? .................................................................... 543
Appendix ...............................................................................545
Appendix A: Glossary ................................................................................................................. 545
Appendix B: Time Zones ............................................................................................................. 547
Appendix C: Trusted Certificates ............................................................................................... 548
Appendix D: Configuring DSS Key ............................................................................................. 549
Appendix E: SIP (Session Initiation Protocol) ............................................................................ 560
RFC and Internet Draft Support .......................................................................................... 561
SIP Request ............................................................................................................................ 564
SIP Header ............................................................................................................................ 564
SIP Responses ....................................................................................................................... 566
SIP Session Description Protocol (SDP) Usage .................................................................. 568
Appendix F: SIP Call Flows ......................................................................................................... 569
Successful Call Setup and Disconnect ............................................................................... 569
Unsuccessful Call Setup—Called User is Busy .................................................................. 572
Unsuccessful Call Setup—Called User Does Not Answer ................................................ 574

Yealink T29G Specifications

General

VoIP Protocols	SIP
PoE Support	Yes (IEEE 802.3af)
Headset Port	RJ9
Bluetooth	No
Weight	1.04 kg
Display	4.3" color display with backlight, 480 x 272 pixels
Line Keys	10 line keys
Ethernet Ports	2 x 10/100/1000 Mbps
Audio Codecs	G.722, G.711, G.729, G.726, iLBC
USB Port	1 x USB 2.0
Expansion Module Support	Yes, supports up to 6 EXP20 expansion modules
EHS	Yes
Supported Protocols	SIP
Operating Temperature	-10~50°C
Humidity	10% to 95% (non-condensing)