Interface implemented by the CNotifyIncomingCallAct AO to allow other objects register themselves to be notified of when an incoming call arrives, obtain the call name and reset it when there is no longer an incoming call.

Two AOs currently make use of the methods in this interface: CNotifyLineStatusAct resets the call name when the line is no longer ringing and CAnswerIncomingCallAct retrieves the call name when there is an incoming call so that the call can be opened.