Hi, The answer to your question is yes. Please note, though, that for some ISUP messages the T-MGC WILL map the ISUP message to a 18x provisional response (see the ISUP-SIP draft for more details). The ISUP-SIP draft currently does say that ALL ISUP messages from the T-MGC will be mapped into 18x before the call is established, but I believe it has been agreed that it will change. Regards, Christer Holmberg Ericsson Finland ����ȯ wrote: > > Dear Sir... > > I am Um TaeHwan in South-Korea. > And, I am implementing the SIP-T between MGC(Media Gateway Controller) > supporting VoATM. > May I question of you? > > I don't know the following message flow is possible. > > Originating-MGC Terminating-MGC > > > INVITE > ----------------------> > > 100 Trying(INVITE) > <----------------------- > > INFO > <---------------------- > > > 200 OK(INFO) > ----------------------> > > 200 OK(INVITE) > <---------------------- > > > While INVITE-transaction is alive, the T-MGC must respond 18X status > message(recommended? ) > But, O-MGC can send INFO method while the INVITE-transaction is alive. > > The question is "T-MGC can send INFO method while INVITE-transaction > is alive?" > > Please let me know it. > > Sincerely yours. > > > > > > > > > > >
begin:vcard n:Holmberg;Christer tel;cell:+358-40-5604412 tel;work:+358-9-2992943 x-mozilla-html:FALSE org:Ericsson;IP Multimedia / Advanced Signalling Research Laboratory adr:;;;;;; version:2.1 email;internet:[EMAIL PROTECTED] title:System Designer fn:Christer Holmberg end:vcard
