Yealink T40G Administrator's Guide

Audio Features
385
the local ringback tone upon a subsequent 180 message received.
Topic
Early Media Configuration
Early Media Configuration
The following table lists the parameter you can use to configure the early media.
Parameter
phone_setting.early_media.rtp_sniffer.timeout
[1]
<y0000000000xx>.cfg
Description
It configures the time to wait for the IP phone to play the local ringback tone when the
early media cannot be played.
Permitted
Values
-1-Do not play the local ringback tone
0-Play the local ringback tone immediately
1-100-Wait for specified time to play the local ringback tone
Default
1
Parameter
phone_setting.is_deal180
<y0000000000xx>.cfg
Description
It enables or disables the IP phone to deal with the 180 SIP message received after the
183 SIP message.
Permitted
Values
0-Disabled
1-Enabled, the IP phone will resume and play the local ringback tone upon a
subsequent 180 message received.
Default
1
Web UI
Features->General Information->180 Ring Workaround
Parameter
phone_setting.change_183_to_180
<y0000000000xx>.cfg
Description
It enables or disables the IP phone to handle the received second 183 message as the
180 message.
Permitted
Values
0-Disabled
1-Enabled, the IP phone will play the early media first and play the local ringback tone
when receiving the second 183 message.
Default
0
[1]
If you change this parameter, the IP phone will reboot to make the change take effect.
Headset Prior
Headset prior allows users to use headset preferentially if a headset is physically connected to the IP

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