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Method and system for providing secure communications between proxy servers in support of interdomain traversal

  • US 8,948,200 B2
  • Filed: 04/24/2012
  • Issued: 02/03/2015
  • Est. Priority Date: 07/20/2005
  • Status: Active Grant
First Claim
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1. A method for providing packetized communication services, the method comprising:

  • receiving a request specifying a directory number for establishing a communication session from a first endpoint to a second endpoint, wherein the first endpoint is behind a first network address translator of a first domain, and the second endpoint is within a second domain;

    communicating with a service provider network to determine, via an Electronic Number (ENUM), a network address for communicating with the second endpoint based on the directory number, to determine, via a Simple Traversal of User Datagram Protocol (STUN), existence of a second network address translator within the second domain, and to establish, via a Traversal Using Relay Network Address Translation (TURN), if the network address can be determined, a media path between the first endpoint and the second endpoint based on the network address to support the communication session;

    establishing an encrypted session with a proxy server according to a cryptographic protocol to support the media path, the proxy server residing within the second domain; and

    converting signaling from another proxy server associated with establishment of the communication session to a format compatible with the proxy server.

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