2011/6/10 Bob Penfield <[email protected]>:
> Except for 100 (Trying), a 1xx should always be forwarded upstream toward the 
> UAC. Remember, all transactions complete independently. There may be a 2xx 
> final response right behind the 1xx response. The CANCEL can only change the 
> state of an INVITE transaction in the UAS.

Yes, exactly what I had in mind :)
I just wonder how useful is relaying a 1XX response upstream in case
the proxy has sent a CANCEL upon the arrival of such response.

But anyhow it's fully clear. Thanks a lot.



-- 
Iñaki Baz Castillo
<[email protected]>

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