-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
Sent: Monday, September 08, 2003 2:22 PM
To: Sip-implementors
Subject: [Sip-implementors] Is the 200's ACK MUST be proxied to UAS?

Is the 200's ACK MUST be proxied to UAS?
Can a proxy send ACK to UAS when received 200 response, and omit the following ACK from UAC. 
 
 
ACK for 200 OK is end to end and hence a proxy cannot send ACK to UA on receiving
200. Also, ACK for 200 OK will arrive at a proxy only if it had record-routed.
 
Thanks
Kowsalya
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