Patent ID: 10244007

Abstract:
A system and method for establishing a voice over Internet protocol link to a called party's mobile telephony device utilizes push notifications to activate a communications application on the called party's mobile telephony communications device. When a request to establish a voice over Internet protocol link to a mobile device is received by an incoming proxy server of a voice over Internet protocol service provider, the service provider causes a push notification to be sent to the mobile device. The called party can respond to the push notification in a manner that causes a communications application on the mobile device to be activated. Once the push notification has caused the communications application to activate, the communications application sends a special registration request to an outbound proxy server. The special registration request causes the outbound proxy server to initiate messaging that is ultimately delivered to an inbound proxy server, the messaging identifying the outbound proxy server with which the communications application has registered. The inbound proxy server can then communicate with the outbound proxy server to obtain information that allows a voice over Internet protocol link to be established with the called party's mobile telephony device.