A method and system for network based call-pickup is provided. In one embodiment a first user agent communicates in a communication session with a second user agent in a network telephony system. The second user agent may request that a third user agent replace the second user agent in the communication....http://www.google.com/patents/US7417988?utm_source=gb-gplus-sharePatent US7417988 - Method and system for network based call-pickup
