Yealink T40G Administrator's Guide

Advanced Features
499
Variable Values List
Yealink IP phones also support a combination of the variable values in the URI, but the order of the
variable value is determined by the operation of the phone. The valid URI format is:
http(s)://<phoneIPAddress>/servlet?key=variable value[;variable value] . Variable values are separated by
a semicolon from each other. This method is not applicable to T48G/S IP phones.
The following shows an example for deleting all entries from the call history list when the phone is idle:
http:// 10.3.20.10/s ervlet?key=F1;F3;DOWN;DOWN;DOWN;OK;OK.
Note
The variable value is not applicable to all events. For example, the variable value “MUTE” is only applicable
when the IP phone is during a call.
When authentication is required, you can use the following URI format:
http(s)://username:password@<phoneIPAddress>/servlet?key=variable value or
http(s)://<phoneIPAddress>/servlet?key=variable value&@username:password .
The following table lists pre-defined variable values:
Variable Value
Phone Action
OK
Press the OK/√ key.
ENTER
Press the Enter soft key. (not applicable to
T48S/T48G IP phones)
SPEAKER
Press the Speakerphone key.
F_TRANSFER
Transfer a call to another party.
VOLUME_UP
Increase the volume.
VOLUME_DOWN
Decrease the volume.
MUTE
Mute a call.
F_HOLD/HOLD
Place an active call on hold.
F_CONFERENCE
Press the Conf/Conference soft key.
Cancel/CANCEL
Cancel actions, reject incoming calls or end a
call.
X
Cancel actions, reject incoming calls or mute or
un-mute calls.
0-9/*/POUND
Press the keypad (0-9, * or #).

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