SYSTEMS AND METHODS FOR MANAGING COMMUNICATION SESSIONS AT ENDPOINTS ACCESSIBLE VIA MORE THAN ONE NETWORK

Methods and systems for establishing communication sessions between communication endpoints. A method for operating a first communication endpoint having a processor, memory and a transceiver for establishing communication sessions with other communication endpoints includes communicating with a second communication endpoint in a first communication session between the first communication endpoint and the second communication endpoint over a first communication network. The communicating comprises executing a first communication application at the first communication endpoint. The method further includes receiving, at the first communication endpoint, an invitation to establish a second communication session with a third communication endpoint over a communication network, wherein the first mobile communication endpoint is provisioned to handle the second communication session by executing a second communication application at the first communication endpoint. The method further includes processing the received invitation according to a specified call treatment option without interruption of the first communication session.