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Session initiation protocol (SIP) user agent in a serving GPRS support node (SGSN)

  • US 20020131395A1
  • Filed: 12/19/2001
  • Published: 09/19/2002
  • Est. Priority Date: 03/19/2001
  • Status: Abandoned Application
First Claim
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1. A telecommunications system, comprising:

  • a Serving GPRS support node (SGSN) adapted to interface to a mobile station; and

    a gateway GPRS support node (GGSN) adapted to couple to a packet network;

    wherein said SSGN includes a Session Initiation Protocol (SIP) user agent for interfacing to a SIP application server, to provide multimedia services to said mobile station.

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