[Serusers] cancel message and to tag

[Greger V. Teigre]

Hi,
This question should be posted on serdev.
g-)

Hye-Jeong Mok wrote:
> 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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