Re: [Sip] CANCEL FAQs

["Medhavi Bhatia" <mbhatia@nextone.com>]

This stuff generally belongs to the implementor's list: sip-implementors
<sip-implementors@cs.columbia.edu>

Generally CANCEL should not be used for transactions which are bound to
complete
quickly, and never for transactions for which you havent received a
provisional (1xx)
response. So the answer for (1) would be: probably not. Also the UAS cannot
cancel
a transaction started by the UAC (I guess that's what you meant), so it
cannot generate
the CANCEL ever.

----- Original Message -----
From: "Sp.Raja" <spraja@isofttechindia.com>
To: <sip@ietf.org>
Sent: Tuesday, July 16, 2002 6:25 AM
Subject: [Sip] CANCEL FAQs


> Please help me out by answering these questions.
>
> 1. Can CANCEL be used to cancel a bye ?
>
> 2. Can CANCEL be send by the called entity (UAS) ? If yes then under what
> circumstances
>
> - Sp.Raja
>


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