Yealink SIP-T3 Administrator's Manual page 524

Example:
action_url.call_terminated = http://192.168.0.20/help.xml?IP=$ip
Permitted
URL within 511 characters
Values
Default Blank
Web UI Features > Action URL > Terminated
Parameter action_url.dnd_on
It configures the action URL the phone sends when DND feature is activated.
Description Example:
action_url.dnd_on = http://192.168.0.20/help.xml?IP=$ip
Permitted
URL within 511 characters
Values
Default Blank
Web UI
Features > Action URL > Open DND
Parameter action_url.dnd_off
It configures the action URL the phone sends when DND feature is deactivated.
Description Example:
action_url.dnd_off = http://192.168.0.20/help.xml?IP=$ip
Permitted
URL within 511 characters
Values
Default Blank
Web UI Features > Action URL > Close DND
Parameter action_url.always_fwd_on
It configures the action URL the phone sends when the always forward feature is activated.
Description Example:
action_url.always_fwd_on = http://192.168.0.20/help.xml?IP=$ip
Permitted
URL within 511 characters
Values
Default Blank
Web UI Features > Action URL > Always Forward On
Parameter action_url.always_fwd_off
It configures the action URL the phone sends when the always forward feature is deactivated.
Description Example:
action_url.always_fwd_off = http://192.168.0.20/help.xml?IP=$ip
Permitted
URL within 511 characters
Values
Default Blank
Web UI Features > Action URL > Always Forward Off
<y0000000000xx>.cfg
<y0000000000xx>.cfg
<y0000000000xx>.cfg
<y0000000000xx>.cfg
Advanced Features
518