FLEXIBLE ALERTING FOR INTEGRATED CELLULAR AND VOIP

An integrated cellular/Voice over IP (VoIP) telephone system including a flexible alerting system, which in response to an inbound call placed to a pilot telephone number, routes a first call leg to a cellular telephone assigned to the pilot telephone number and a second call leg to a first telephone number. The telephone system further includes a VoIP server, adapted to establish an inbound call to a VoIP client in response to an inbound call leg routed to the first telephone number. To provide an integrated one-number service, the VoIP server also establishes an outbound call but sets the caller identification data to correspond to the pilot telephone number, in response to an outbound call originated by the VoIP client.