Yealink SIP-T40G Administrator's Guide

Audio Features
172
Description
It configures the time to wait for the 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 a specified time to play the local ringback tone
Default
1
Parameter
phone_setting.is_deal180 <y0000000000xx>.cfg
Description
It enables or disables the phone to deal with the 180 SIP message received after the 183 SIP mes-
sage.
Permitted
Values
0-Disabled
1-Enabled, the 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 phone to handle the received second 183 message as the 180 message.
Permitted
Values
0-Disabled
1-Enabled, the 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 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 phone. This
feature is especially useful for permanent or full-time headset users.
It is not applicable to CP920 phones.
Note: It is not applicable to the Bluetooth headset and USB headset.
Topic
Headset Prior Configuration
Headset Prior Configuration
The following table lists the parameters you can use to configure the headset prior.
Parameter
features.headset_prior <y0000000000xx>.cfg
Description
It enables or disables to preferentially use the headset mode for all incoming and outgoing calls.
Note: It works only if “features.headset_mode.enable” is set to 1 (Enabled).
Permitted
Values
0-Disabled, the headset mode will be deactivated after the call, if you switch the headset mode to
speakerphone/handset mode.
1-Enabled, the headset mode will not be deactivated after the call, even if you switch the headset
mode to speakerphone/handset mode.

Yealink SIP-T40G Specifications

General

Mounting	Desk/Wall
Handset type	Wired handset
Product type	IP Phone
Product color	Black
Wall mountable	Yes
Wi-Fi	No
Security algorithms	AES, HTTPS, SSL/TLS
Networking standards	IEEE 802.3af
Ethernet LAN interface type	Gigabit Ethernet
Supported network protocols	FTP, TFTP, HTTP, HTTPS
Voice codecs	G.711, G.711a, G.711u, G.722, G.726, G.729ab
RJ-11 ports quantity	1
Ethernet LAN (RJ-45) ports	2
AC adapter input voltage	100 - 240 V
AC adapter output current	0.6 A
AC adapter output voltage	5 V
Power consumption (typical)	1.6 W
Certification	CE, FCC, ISO 9001
Operating temperature (T-T)	-10 - 50 °C
Operating relative humidity (H-H)	10 - 90 %
Volume control	Digital
Display diagonal	2.3 \
Display resolution	132 x 64 pixels
Lines quantity	3 lines
Phonebook capacity	1000 entries
Number of VoIP accounts	3
Number of handles included	1 pc(s)

Weight and Dimensions

Depth	175 mm
Width	212 mm
Height	54 mm