An Internet Protocol (IP) multimedia subsystem for use in a telecommunication network. The IP multimedia subsystem comprises: 1) an IP switch for receiving Session Initiation Protocol (SIP) messages from an external IP network; and 2) a plurality of call application nodes capable of executing a plurality of service applications groups. The IP switch distributes the SIP messages to the plurality of call application nodes according to a load-sharing algorithm.

 
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< Electronic purchase of goods over a communications network including physical delivery while securing private and personal information of the purchasing party

> System and method for providing integrated voice and data services utilizing wired cordless access with unlicensed spectrum and wired access with licensed spectrum

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