[Serusers] Queries regarding SIP IM

[Klaus Darilion]

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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