Administrator’s Guide for SIP-T2 /T3 /T4 /T5 /CP920 IP Phones
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key=OK
Variable Values List
Yealink 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 T57W/T48U/T48S/T48G phones.
The following shows an example for deleting all entries from the call history list when the phone is idle:
For CP920 phones:
http://10.3.20.10/servlet?key=F1;OK;F3;DOWN;DOWN;DOWN;OK;OK.
For other phones:
http://10.3.20.10/servlet?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)://user-
name:password@<phoneIPAddress>/servlet?key=variable value. If you are using a browser, we recommend that
you use Firefox.
The following table lists predefined variable values:
Variable Value
Phone Action
OK
Press the OK/
√
key. (not applicable to T57W phones)
ENTER
Press the
Enter
soft key. (not applicable to T57W/T48U/T48S/T48G
phones)
SPEAKER
Press the Speakerphone key. (not applicable to CP920 phones)
F_TRANSFER
Transfer a call to another party.
VOLUME_UP
Increase the volume.
VOLUME_DOWN
Decrease 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. (not
applicable to T57W phones)
0-9/*/POUND
Press the keypad (0-9, * or #).
L1-LX
Press the line keys (for T57W/T48U/T48S/T48G, X=29; for
T54W/T46U/T46S/T46G/T29G, X=27; for
T42U/T42G/T42S/T41P/T41S, X=15; for T53W/T53/T43U/T27G,
X=21; for T33P/T33G, X=12; for T40P/T40G/T23P/T23G, X=3; for
