[Serusers] More Queries regarding SIP IM

[Abhijit A.Mahajani]

Thanks Klaus!
My basic problem is:
If a SIP call has been established by an UAC (say windows msgr 5.0). Hence
Now All Instant msgs sent by windows msgr will be processed by the SIP
server.Now if some other UAC tries to send IM , then since that IM would
contain INVITE , should our SIP server process that IM? I think answer
should be know...SIP server needs to check the two Call IDs or not?
Windows msgr 5.0 sends IM with SDP=x-ms-message but if other UAC does not
send that then will that be OK?
If It is OK, then should SIP server entertain the SIP IM if its call id and
the call id in the session INVITEd by first UAC are different?

Thanks and Regards.
Abhijit


>
> ----- Original Message -----
> From: "Klaus Darilion" <klaus.mailinglists at pernau.at>
> To: "Abhijit A.Mahajani" <abhijit_m at citilindia.com>
> Cc: <serusers at lists.iptel.org>
> Sent: Tuesday, July 26, 2005 1:58 PM
> Subject: Re: [Serusers] Queries regarding SIP IM
>
>
> > Abhijit A.Mahajani wrote:
> > >
> > > I have few doubts regarding SIP IM:
> > > 1.Can SIP IM initiate a SIP dialog on its own?
> >
> > The RFC states, that MESSAGE does not create a dialog. Nevertheless, in
> > windows Messegner 4.6/4.7, the MESSAGE created a dialog.
> >
> > > 2.Without any INVITE or any Call established can SIP ua send a SIP IM?
> >
> > Yes.
> >
> > > 3.Like Windowds Msgr , For the First SIP IM , x-ms-invite is sent
which
> > > iniates the converation, But These session should be treated as same
> > > media session would have been iniated by any other INIVTE?
> >
> > Where das "x-ms-invite" appear? AFAIK Windows Messenger 5.0 creates
> > first a dialog using INVITE and an SDP with "m=x-ms-message". Of course
> > these INVITE should be treated as any other INVITE, except that you need
> > not enforce the rtpproxy (in case of NAT traversal)
> >
> > > 4.How should SIP Server respond to the Normal INIVITE and x-ms-invite?
> > > should treat same or diffrerent?
> >
> > same
> >
> > regards,
> > Klaus
> >
> > >
> > > Hoping for your reply.
> > > with Regards.
> > > Abhijit
> > >
> > >
> > >
> >
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