[Serusers] cancel message and to tag

[Pat Wang]

How come SER sends an 183? that's early media response and SER has nothing 
to do with it.

----- Original Message ----- 
From: "Hye-Jeong Mok" <hyejeongmok at hotmail.com>
To: <serusers at lists.iptel.org>
Sent: Tuesday, October 10, 2006 12:35 AM
Subject: [Serusers] cancel message and to tag


> Hi,
>
> Have a question about the CANCEL message and the to tag. Let say I have a 
> UAC sending INVITE to SER. SER responds with 183 message with a to tag = 
> 111. Then the UAC sends CANCEL with no tag, and SER responds with 200 
> message with the new to tag = 222, followed by 487 message with to tag 
> 222. SER 0.9.0 that I'm using behaves this way.
>
> I believe in 3261, the to tag of the 200 message in response to the CANCEL 
> that has no tag, it has to be the same as the to tag that is in the 
> previous 1xx message. So in this case, SER that I'm using is doing 
> something wrong? Any idea how to fix this?
>
> Thanks,
> HJ
>
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