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Method and apparatus for processing session initiation protocol messages associated with a voice over IP terminal

  • US 7,773,584 B2
  • Filed: 06/13/2006
  • Issued: 08/10/2010
  • Est. Priority Date: 06/13/2006
  • Status: Active Grant
First Claim
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1. A computer-readable storage medium in a wireless access point (WAP), comprising computer instructions for:

  • detecting a session initiation protocol (SIP) message initiated by a VoIP terminal requesting communication with a public service access point (PSAP);

    detect from the SIP message a lack of location information associated with the VoIP terminal;

    transmit a location query to one among the VoIP terminal, and a gateway connecting the VoIP terminal to the network proxyautomatically inserting location information associated with the WAP into the SIP message in response to the VoIP terminal requesting communication with the PSAP and in response to the location query; and

    transmitting the SIP message to a network proxy.

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