Also, if you wish to do send SIP messages to carry some kind of information outside the dialog then I think you should use SUBSCRIBE and NOTIFY.
http://www.faqs.org/rfcs/rfc3265.html Regards, Attila Attila Sipos http://www.vegastream.com >> -----Original Message----- >> From: Attila Sipos >> Sent: 01 August 2005 13:24 >> To: 'Kishore Sowdi'; [email protected] >> Subject: RE: [Sip-implementors] INFO method >> >> >> Hi, >> >> ref: http://www.faqs.org/rfcs/rfc2976.html >> >> From this: >> >> It is necessary that the mid-session signaling >> information traverse >> >> the post session setup SIP signaling path. This is the >> path taken by >> >> SIP re-INVITEs, BYEs and other SIP requests that are tied to an >> >> individual session. This allows SIP proxy servers to >> receive, and >> >> potentially act on, the mid-session signaling information. >> >> and this: >> >> >> The INFO method is used for communicating mid-session signaling >> >> information along the signaling path for the call. >> >> >> >> The INFO method is not used to change the state of SIP >> calls, nor >> >> does it change the state of sessions initiated by SIP. >> Rather, it >> >> provides additional optional information which can >> further enhance >> >> the application using SIP. >> >> >> >> The signaling path for the INFO method is the signaling path >> >> established as a result of the call setup. This can be >> either direct >> >> signaling between the calling and called user agents or >> a signaling >> >> path involving SIP proxy servers that were involved in >> the call setup >> >> and added themselves to the Record-Route header on the >> initial INVITE >> >> message. The INFO method is used for communicating >> mid-session signaling >> >> information along the signaling path for the call. >> >> >> It seems that SIP INFO can only be mid-session. >> >> Best Regards, >> >> Attila >> >> Attila Sipos >> http://www.vegastream.com >> >> >> >> -----Original Message----- >> >> From: [EMAIL PROTECTED] >> >> [mailto:[EMAIL PROTECTED] >> Behalf Of Kishore >> >> Sowdi >> >> Sent: 01 August 2005 12:45 >> >> To: [email protected] >> >> Subject: [Sip-implementors] INFO method >> >> >> >> >> >> >> >> >> >> > Hi there, >> >> > My doubt is whether INFO request can be sent outside a >> >> dialog (call) or >> >> > should it be sent only for carrying mid-call signalling >> >> information along >> >> with the session signalling path . >> >> > >> >> > regards, >> >> > KISHORE SOWDI . >> >> >> >> >> >> _______________________________________________ >> >> Sip-implementors mailing list >> >> [email protected] >> >> http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors >> >> >> _______________________________________________ Sip-implementors mailing list [email protected] http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
