Abstract:
Systems and methods for establishing an IP telephone call to a called party's telephony device include attempting to send a call setup request directly to the called party's telephony device, and requesting that a push notification be sent to the called party's telephony device. If the direct request does not reach the called party's telephony device, the push notification will result in the called party's telephony device contacting the IP telephony system to setup the requested call. In some embodiments, the request for a push notification is not sent until the direct request is determined to have failed.