Interactive nat traversal method in session initiation protocol
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United States of America Patent
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Issued Date -
Mar 13, 2008
app pub date -
Nov 1, 2006
filing date -
Aug 17, 2006
priority date (Note) -
Abandoned
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Abstract
The present invention provides an interactive NAT (Network Address Translator) traversal method, i.e. INT (Interactive NAT Traversal) method, for solving the problems of SIP (Session Initiation Protocol) in Internet phone (VoIP) under current Internet environment. In other words, the present invention solves the SIP problems caused by NAT (Network Address Translator) and private (virtual) IP, so that P2P (Peer to Peer) transmission can traverse the NAT firewall directly. The present invention uses the INT method on SIP, forming an interactive NAT traversal method in SIP (SIP with INT, SWINT), to solve the problems that SIP speech packets cannot transmit directly under NAT firewall.
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