Yealink T40G Configuring Guide

Table of Contents
ix
Enhanced Monitor Extension ................................................................................................ 55
Configuring an Enhanced Monitor Extension key ............................................................. 55
LED Indicator ..................................................................................................................... 56
Configuring Transfer Mode via Dsskey Feature ................................................................. 56
Intercom and Push-to-Talk ................................................................................................... 57
Enabling Push to Talk Mode .............................................................................................. 57
Configuring an Intercom/PTT Key ..................................................................................... 58
Using Push-to-Talk ............................................................................................................ 59
Placing an Intercom Call .................................................................................................... 59
Configuring Incoming Intercom/PTT Calls ......................................................................... 59
Multicast Paging ................................................................................................................... 60
Configuring a Multicast Paging key................................................................................... 60
Configure a Paging List key ............................................................................................... 61
Configuring Paging List ..................................................................................................... 61
Configuring a Codec for Multicast Paging ........................................................................ 62
Configuring Multicast Listening Addresses ....................................................................... 63
Handling Incoming Multicast Paging Calls ........................................................................ 63
Sending RTP Stream via a Multicast Paging Key ............................................................... 64
Sending RTP Stream via a Paging List Key......................................................................... 65
DTMF .................................................................................................................................... 65
DTMF Keypad .................................................................................................................... 65
Transmitting DTMF Digit ................................................................................................... 66
Call Jump .............................................................................................................................. 66
Troubleshooting ...................................................................... 69
IP Address Issues .................................................................................................................. 69
Why doesn’t the IP phone get an IP address? ................................................................... 69
How to solve the IP conflict problem? ............................................................................... 69
Time and Date Issues ............................................................................................................ 69
Why doesn’t the IP phone display time and date correctly? ............................................. 69
Display Issues ........................................................................................................................ 70
Why is the LCD screen blank?............................................................................................ 70
Why does the IP phone display “No Service”?................................................................... 70
Phone Book Issues ................................................................................................................ 70
What is the difference between a remote phone book and a local directory? .................. 70
Audio Issues .......................................................................................................................... 70
How to increase or decrease the volume? ......................................................................... 70
Why do I get poor sound quality during a call? ................................................................ 71
Wi-Fi and Bluetooth Issues ................................................................................................... 71
Why is the wireless signal strength low? ........................................................................... 71
Why can’t I connect the Bluetooth device with the IP phone all the time? ....................... 71
Why the Bluetooth headset affects IP phone’s voice quality？ ......................................... 71
Firmware and Upgrading Issues ........................................................................................... 72

Yealink T40G Specifications

General

SIP Accounts	3
Wall Mountable	Yes
Opus Codec	No
Display	2.3 inch 132x64-pixel graphical LCD
Network	Dual-port Gigabit Ethernet
PoE	Yes
Headset Support	Yes, RJ9 port
Power Adapter	Optional
Voice Codecs	G.722, G.711(A/μ), G.729AB, G.726
Local Phonebook	1000 entries