[Serusers] Queries regarding SIP IM

[Klaus Darilion]

Hi!

1. Please always Cc: to the mailing list - others might also be 
interested in this topic and may help you.

2. I'm not sure if I understand the problem correctly

The SIP Proxy should forward all INVITEs to the corresponding SIP 
client. Then the SIP client may choose to receive a second sessions 
(voice, video or IM) or not.

regards,
klaus

Abhijit A.Mahajani wrote:
> 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
>>>
>>>
>>>
>>>------------------------------------------------------------------------
>>>
>>>_______________________________________________
>>>Serusers mailing list
>>>serusers at lists.iptel.org
>>>http://lists.iptel.org/mailman/listinfo/serusers
> 
> 
>