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
