Hey Bob,
I think what you said below is in line with what the spec recommends of how to terminate a early dialog by using BYE...
But i am a bit amused becasue we have always been talking from the 2543-biz days that we would always have to use a CANCEL for terminating session (in this case the session being a 'early dialogue' formation.. by say a 180.. The idea being that all sessions which have not received a final response 2xx-6xx will have to be terminated by sending out a CANCEL and not a BYE. A BYE for terminating to be used only on receipt of a final response.. (obviously after having ACK'd the final response)...
So is'nt there a bit of discrepancy in the way we use our CANCEL and BYE? atleast in the way of how we are terminating early dialogue's..
Rama
Bob Penfield <[EMAIL PROTECTED]> wrote:
The use of BYE is only required if the UAC wants to terminate a particular
early dialog, but let other early dialogs or pending branches of the INVITE
continue. CANCEL is used if the UAC wants to cancel the whole INVITE
including all early dialogs and all outstanding forked branches of the
INVITE.
cheers,
(-:bob
Robert F. Penfield
Chief Software Architect
Acme Packet, Inc.
130 New Boston Street
Woburn, MA 01801
[EMAIL PROTECTED]
----- Original Message -----
From: "Karthik M" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Monday, April 26, 2004 10:37 AM
Subject: [Sip-implementors] Early session and Cancel
> Hello all,
> In a dialog, if an early session is established through 180 and if the
UAC wants to cancel the invite transaction, Should the cancel be discardedand the entire dialog should be released only by BYE. I tried to understand
the "Terminating the session" part in the RFC 3261. but still its not clear
to me.
>
> Also i found in one posting of this mailing list that BYE should be
sent to terminate that session that is established and if the cancel is
sent, then all the forking requests and the early session are also
terminated. Is that correct?
>
> Please clarify me.
>
> TIA
> Karthik M
>
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