And in rfc 3665 Basic Call Scenarios In Section 3.7 "Session with re-INVITE (IP Address Change)" INvite has Cseq 1
And RE-Invite has Cseq of 14 And then the dialog is being terminated with BYE having CSeq 2 Could u please explain me this behaviour? On 11/16/06, Gaurav Kheterpal <[EMAIL PROTECTED]> wrote: > > A possibility is that there was a PRACK generated by UAC1 between the > original INVITE and RE-INVITE. In that case, the PRACK would have an > incremented CSEQ of 2 and the RE-INVITE will subsequently have a CSEQ > value > of 3. > > Draft-sip-100rel-02.txt mentions: > > "The PRACK request is like any other non-INVITE request sent within a > call. > The PRACK request contains the same Call-ID as the provisional response it > is acknowledging. The CSeq number in the PRACK is higher than that of > the > request whose provisional response it acknowledges." > > Regards, > Gaurav > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Divya > Sachdeva > Sent: Thursday, November 16, 2006 11:22 AM > To: kishore sowdi > Cc: [email protected] > Subject: Re: [Sip-implementors] Re-Invite Cseq > > Yeah But i think shd have got increased from 1 to 2 but not 3 > > On 11/16/06, kishore sowdi <[EMAIL PROTECTED]> wrote: > > > > Hi, > > > > Section 4 of rfc 3261 says - > > "CSeq or Command Sequence contains an integer and a method name. The > > CSeq number is incremented for each new request within a dialog and > > is a traditional sequence number." > > > > Section 12.2.1.1 says - > > "Requests within a dialog MUST contain strictly monotonically > > increasing and contiguous CSeq sequence numbers (increasing-by-one) > > in each direction (excepting ACK and CANCEL of course, whose numbers > > equal the requests being acknowledged or cancelled)" > > > > So while sending re-invite , it has choosed running cseq number. > > > > regards, > > kishore > > > > *Divya Sachdeva <[EMAIL PROTECTED]>* wrote: > > > > If a session is already established between 2 UAs > > and the Cseq for the Invite was 1 then > > If i now send a reInvite from UA1 to UA2 what will be the Cseq for this > > Invite ..will it be incremented by 1 or again any arbitary number will > be > > chosen > > As in my case wheni was implementing ,it got incremented from 1 to 3 > .Can > > anybody explain me this behaviour > > _______________________________________________ > > Sip-implementors mailing list > > [email protected] > > https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors > > > > > > > _______________________________________________ > Sip-implementors mailing list > [email protected] > https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors > > _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
