Patent ID: 7411917

Claim:
A system for providing network access translation device traversal to facilitate communications, comprising: a network access translation (NAT) device; a first Session Initiation Protocol (SIP) client located on the interior of the NAT device; a second SIP client located on the exterior of the NAT device; and a proxy server configured to maintain registration information relating to the first SIP client and the NAT device; wherein the NAT device creates a first binding for communication with a registration port of the first SIP client in response to registration information sent from the first SIP client to the proxy server, wherein the proxy server provides registration information relating to the first SIP client to the second SIP client and forwards at least one command from the second SIP client to the first SIP client using the first binding, and wherein the communication session bypasses the proxy server and traverses the NAT device in accordance with a second binding between the registration port of the first SIP client and a port of the second SIP client.