Get notified when a call event occurs
An application can subscribe to one or more valid call events for an IMS subscriber.When a call event subscription filter is matched,the Telephony Application Server (Nokia TAS) sends the matched event via POSTto the specified 3rd Party Application Server (3PAS)all continues as normal.
CalledNumber, NoAnswer, Busy, Disconnected, NotReachable
Why use it?
Track, log, use the event to trigger another action