05-08-2009, 05:20 PM
Mobile based sip-communicator ,real time application implemented using j2me and sip api,The Session Initiation Protocol (SIP) is a signaling protocol used for establishing and controlling multimedia communication sessions on networks that use the Internet Protocol (IP). A session is as simple as a two-way phone call. SIP was primarily designed to establish, modify, and terminate sessions, This simplicity makes SIP quite scalable and extensible, and it can be used easily in different architectures and deployment scenarios. SIP is already being used for all kinds of innovative applications and services, and its importance in mobile networks will continue to grow.