Administrator’s Guide for SIP-T2 Series/T4 Series/T5 Series IP Phones 
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Example: 
action_url.idle_to_busy = http://192.168.0.20/help.xml?IP=$ip 
URL within 511 characters 
The value format is: http(s)://IP address of server/help.xml?variable name=variable 
value. For Pre-defined events, refer to Pre-defined Events List. For variable value, refer 
to Variable Values List. 
Features->Action URL->Idle To Busy 
It configures the action URL the IP phone sends when changing the IP address of the 
IP phone. 
Example: 
action_url.ip_change = http://192.168.0.20/help.xml?IP=$ip 
URL within 511 characters 
The value format is: http(s)://IP address of server/help.xml?variable name=variable 
value. For Pre-defined events, refer to Pre-defined Events List. For variable value, refer 
to Variable Values List. 
Features->Action URL->IP Changed 
action_url.forward_incoming_call 
It configures the action URL the IP phone sends when forwarding an incoming call. 
Example: 
action_url.forward_incoming_call = http://192.168.0.20/help.xml?IP=$ip 
URL within 511 characters 
The value format is: http(s)://IP address of server/help.xml?variable name=variable 
value. For Pre-defined events, refer to Pre-defined Events List. For variable value, refer 
to Variable Values List. 
Features->Action URL->Forward Incoming Call 
action_url.reject_incoming_call 
It configures the action URL the IP phone sends when rejecting an incoming call. 
Example: 
action_url.reject_incoming_call = http://192.168.0.20/help.xml?IP=$ip 
URL within 511 characters 
The value format is: http(s)://IP address of server/help.xml?variable name=variable