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Re: [Sip] INVITE 200 OK - TCP retransmission

check RFC3261 sec 13.3.1.4
 
      Since 2xx is retransmitted end-to-end, there may be hops between
      UAS and UAC that are UDP.  To ensure reliable delivery across
      these hops, the response is retransmitted periodically even if the
      transport at the UAS is reliable.
 
-Rockson

From: sip-bounces at ietf.org [mailto:sip-bounces at ietf.org] On Behalf Of Thomas george
Sent: Tuesday, September 16, 2008 10:17 AM
To: sip at ietf.org
Subject: [Sip] INVITE 200 OK - TCP retransmission

Hi,

 

Why the 200 OK to INVITE is retransmitted even if we are using TCP?

 

rgds,

Thomas


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