Yealink SIP-T2 SERIES Administrator's Manual page 658

Administrator's Guide for SIP-T2 Series/T19(P) E2/T4 Series/CP860 IP Phones
Description:
Configures the action URL the IP phone sends when no answer forward feature is
enabled.
Example:
action_url.no_answer_fwd_on = http://192.168.0.20/help.xml?IP=$ip
Web User Interface:
Features->Action URL->Open NoAnswer Forward
Phone User Interface:
None
action_url.no_answer_fwd_off
Description:
Configures the action URL the IP phone sends when no answer forward feature is
disabled.
Example:
action_url.no_answer_fwd_off = http://192.168.0.20/help.xml?IP=$ip
Web User Interface:
Features->Action URL->Close NoAnswer Forward
Phone User Interface:
None
action_url.transfer_call
Description:
Configures the action URL the IP phone sends when performing a transfer.
Example:
action_url.transfer_call = http://192.168.0.20/help.xml?IP=$ip
Web User Interface:
Features->Action URL->Transfer Call
Phone User Interface:
None
action_url.blind_transfer_call
Description:
636
Parameters Permitted Values
URL within 511 characters
URL within 511 characters
URL within 511 characters
Default
Blank
Blank
Blank