Yealink SIP-T2 SERIES Administrator's Manual page 667

Parameters
action_url.call_remote_canceled
Description:
Configures the action URL the IP phone sends when the remote party cancels the
outgoing call in the ringing state.
Example:
action_url.call_remote_canceled = http://192.168.0.20/help.xml?IP=$ip
Web User Interface:
Features->Action URL->Call Remote Canceled
Phone User Interface:
None
To configure action URL via web user interface:
1. Click on Features->Action URL.
2. Enter the action URLs in the corresponding fields.
3. Click Confirm to accept the change.
HTTP/HTTPS GET Request
Opposite to action URL, action URI allows IP phones to interact with web server
Configuring Advanced Features
Permitted Values
URL within 511 characters
Default
Blank
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