US Patent 7385975 Routing method and SIP server using the same

Patent 7385975 was granted and assigned to Institute for Information Industry on June, 2008 by the United States Patent and Trademark Office.

Overview Structured Data Issues Contributors Activity

Is a

Patent

Patent attributes

Current Assignee

Institute for Information Industry

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

7385975

Date of Patent

June 10, 2008

Patent Application Number

10847128

Date Filed

May 17, 2004

Patent Primary Examiner

‌

Firmin Backer

Patent abstract

A routing method. When implemented in a network system, the routing method ameliorates problems of media stream routing through a network address translation (NAT) device. First, whether a first terminal will correspond to different public address-and-port information for receiving media stream packets from a second terminal opposite to the first terminal after receiving different requests is determined. The first and second terminals comprise a caller and a callee which are capable of communicating in SIP protocol. The public address-and-port information is recorded as source information in media stream packets initiated by the requests. Media stream packets from the first terminal are relayed based on the determination.