可授權專利


Modified NAT firewall traversal method for SIP communication 


專利名稱 Modified NAT firewall traversal method for SIP communication
專利國家
   專利證書號
美國 US 7,751,387 B2
專利權人 國立台北科技大學
發明人 黃紹華、Yao-Hsing Chung
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技術摘要


A modified NAT firewall traversal method for SIP communication is based on the common SIP network phone communication protocol, and is aided by Interactive NAT Traversal (INT) and pre-established media session ideas to accomplish the object of transversing NAT firewall. Users of private IP located within different NAT firewalls can therefore directly transmit voice packets by means of peer-to-peer transmission without the need of any proxy server of voice packets.


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