Hi, sorry corrected diagram below
caller -------------------> Callee
INVITE
caller <------------------- Callee
180 Ringng
caller ---------------------> Callee
BYE
caller <--------------------- callee
200 OK (BYE)
?
?
Is the 487 or other non 2XX response a MUST here or is it optional?
--- On Tue, 22/2/11, Joegen E. Baclor <[email protected]> wrote:
> From: Joegen E. Baclor <[email protected]>
> Subject: Re: [Sip-implementors] SIP flow for BYE sent for early dialog
> To: [email protected]
> Cc: [email protected]
> Date: Tuesday, 22 February, 2011, 2:02
> You couldn't possibly send a BYE in
> this case becasue 100 trying can't
> have a to-tag which renders it incapable of forming an
> early dialog.
> However the appropriate response is a 487 if there is
> indeed a dialog
> formed by the INVITE transaction.
>
> On Tuesday, 22 February, 2011 06:47 AM, Nauman Sulaiman
> wrote:
> > Hi, If the caller sends a BYE for an early dialog what
> should the callee send as response to INVITE. I understand a
> 200K would be sent for the BYE.
> >
> > caller -------------------> Callee
> > INVITE
> >
> > caller<------------------- Callee
> > 100
> Trying
> >
> > caller ---------------------> Callee
> > BYE
> >
> > caller<--------------------- callee
> > 200 OK (BYE)
> >
> >
> ?
> >
> >
> ?
> >
> >
> > Thanks
> >
> >
> >
> >
> > _______________________________________________
> > Sip-implementors mailing list
> > [email protected]
> > https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
> >
> >
>
>
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