Hi You cab refer RFC 3312 about preconditions which mat help u what ur looking for....
regards sudhir On Wed, 14 Sep 2005 Hema Ramamoorthy wrote : >Hi, >I need help on the following issue. My call flow goes on like this. > >INVITE (No SDP) >-----------------------> >100 TRYING ><----------------------- >183 Session Progress (Offer SDP) ><----------------------- >PRACK >------------------------> > >This PRACK message rejected the Offer SDP by sending an Answer SDP with >Port value as 0. > >My queries are: > >1. What should be done next by the UAC? Should it send a 4xx response? >2. What will be the format of the SDP received in the PRACK? Will it list >out any of the codec capabilities? > >Please provide me some RFC which can give information on this. > >Thanks & Regards, >Hema Ramamoorthy. >_______________________________________________ >Sip-implementors mailing list >[email protected] >http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors Sudhir Kumar Reddy Software Engineer Qualphone Communications pvt. ltd +91-9845052651 _______________________________________________ Sip-implementors mailing list [email protected] http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
