Re: [Sip] CANCEL FAQs

[Robert Sparks <rsparks@dynamicsoft.com>]

I'm going to respond to this on the sip-implementors list.

That is the right forum to ask these kind of questions (and to
answer them). This list focuses on the SIP working groups
current design issues.

If you haven't subscribed to sip-implementors (and are interested),
the information you need to do so can be found at
http://www.cs.columbia.edu/~hgs/sip/list.html

RjS

On Thu, 2002-07-18 at 13:34, Ranjit Avasarala wrote:
> u cannot send CANCEL for re-invite as u won't be getting any ringing tone as
> response
> 
> Ranjit
> ----- Original Message -----
> From: Suresh Arora <suresh.arora@baypackets.com>
> To: Medhavi Bhatia <mbhatia@nextone.com>; <sip@ietf.org>
> Sent: Wednesday, July 17, 2002 6:14 PM
> Subject: RE: [Sip] CANCEL FAQs
> 
> 
> > I think UAS can send CANCEL to UAC for a re-INVITE (if requested session
> > characteristics are not supported by Server).
> >
> > -Suresh
> >
> > -----Original Message-----
> > From: sip-admin@ietf.org [mailto:sip-admin@ietf.org]On Behalf Of Medhavi
> > Bhatia
> > Sent: Wednesday, July 17, 2002 9:21 AM
> > To: sip@ietf.org
> > Subject: Re: [Sip] CANCEL FAQs
> >
> >
> > 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
> > >
> >
> >
> > _______________________________________________
> > Sip mailing list  https://www1.ietf.org/mailman/listinfo/sip
> > This list is for NEW development of the core SIP Protocol
> > Use sip-implementors@cs.columbia.edu for questions on current sip
> > Use sipping@ietf.org for new developments on the application of sip
> >
> >
> >
> > _______________________________________________
> > Sip mailing list  https://www1.ietf.org/mailman/listinfo/sip
> > This list is for NEW development of the core SIP Protocol
> > Use sip-implementors@cs.columbia.edu for questions on current sip
> > Use sipping@ietf.org for new developments on the application of sip
> 
> 
> _______________________________________________
> Sip mailing list  https://www1.ietf.org/mailman/listinfo/sip
> This list is for NEW development of the core SIP Protocol
> Use sip-implementors@cs.columbia.edu for questions on current sip
> Use sipping@ietf.org for new developments on the application of sip



_______________________________________________
Sip mailing list  https://www1.ietf.org/mailman/listinfo/sip
This list is for NEW development of the core SIP Protocol
Use sip-implementors@cs.columbia.edu for questions on current sip
Use sipping@ietf.org for new developments on the application of sip