The fact that you do not receive an ACK for the 200 OK to hold should be quite worrying for 'Alice's' soft phone. There is nothing wrong with sending a BYE as it is more than likely that 'Alice's' softphone is experiencing difficulty. You could maybe wait for the transaction to time-out, then attempt a target refresh from 'Alice's' soft phone, if this fails, then consider the call dead and terminate.
Chris. -----Original Message----- From: Christer Holmberg [mailto:[EMAIL PROTECTED] Sent: 07 March 2003 05:57 To: Gupta Adetya-A19368 Cc: [EMAIL PROTECTED] Subject: Re: [Sip-implementors] doubt regarding Re-Invite Hi, The BYE will terminate the whole session. Because, even if you, as you call it, have a new "media state", it's still the same session. Regards, Christer Holmberg Ericsson Finland Gupta Adetya-A19368 wrote: > Hi All, > I have a small doubt, > can anyone help ? > > Alice's Bob's > Softphone SIP Phone > > | INVITE | > |--------------->| > |(100 Trying) | > |<---------------| > | 180 Ringing | > |<---------------| > | 200 OK | > |<---------------| > | ACK | > |--------------->| > Both way RTP Established > |<==============>| > | INVITE(hold) | > |<---------------| > |(100 Trying) | > |--------------->| > | 200 OK | > |--------------->| > No ACK received for Call-Hold request > | 200 OK | > |--------------->| > | 200 OK | > |--------------->| > | 200 OK | > |--------------->| > | 200 OK | > |--------------->| > Server Transaction times out and sends a BYE > | BYE | > |--------------->| > > After the Server Transaction Times out, as per rfc 3261 > the Alice's softphone will send a BYE to Bob's phone. > > Will this BYE terminate the initial established session? > The expected behavior is that the Alice's and Bob's phone > should revert back to the previous Active media state after > the call-hold fails. > > Will sending the BYE terminate the re-INVITE transaction for > call-hold, or would it bring down the complete session ? > > regards > Adetya > _______________________________________________ > 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 _______________________________________________ Sip-implementors mailing list [EMAIL PROTECTED] http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
