Patent ID: 7864947

Claim:
A call notification system arranged to handle calls and, in respect of each call, to generate a call notification at a recipient system in response to receipt of initiation data on the call from an originating system, the initiation data being arranged to trigger the recipient system to open a separate peer-to-peer connection to the originating system to obtain the call notification data from the originating system for use in generating the call notification whereby at least aspects of the call notification are controllable by the originating system, wherein the recipient system is arranged, prior to the establishment of the communication phase for the call, to selectively provide feedback data on the status of the call notification to the originating system, the feedback data including an indication to the originating system of receipt of the call notification data by the recipient system for a first portion of said calls in which the recipient system received the call notification data, and an indication to the originating system of non-receipt of the call notification data by the recipient system for a second portion of said calls in which the recipient system did not receive the call notification data.