I have few doubts regarding SIP IM: 1.Can SIP IM initiate a SIP dialog on its own? 2.Without any INVITE or any Call established can SIP ua send a SIP IM? 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? 4.How should SIP Server respond to the Normal INIVITE and x-ms-invite? should treat same or diffrerent?
Hoping for your reply. with Regards. Abhijit
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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Abhijit A.Mahajani -
Klaus Darilion