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Method and system for registering and automatically retrieving digital-certificates in voice over internet protocol (VOIP) communications

  • US 6,842,449 B2
  • Filed: 07/09/2002
  • Issued: 01/11/2005
  • Est. Priority Date: 07/09/2002
  • Status: Expired due to Fees
First Claim
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1. A method of communicating over a network comprising:

  • receiving a digital voice call setup request associated with a caller certificate from a caller;

    determining a location of a called party identified in said digital voice call setup request by;

    transmitting a request to a location server for said location, said request including an identifier of the called party and a signature of the caller; and

    receiving a location response from said location server, said location response including said location for said called party called party certificate and said caller certificate;

    transmitting said digital voice call setup request with said caller certificate to said called party;

    receiving a called party acceptance message;

    verifying said called party acceptance message; and

    transmitting said called party acceptance message and said called party certificate to said caller.

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