It serves 2 purposes.... 1. to confirm UAS that UAC got the SDP sent in the 200-INV, without ACK UAS is not sure whether answer reached UAC or not. Before that confirmation, its like one ended pipe open from UAC to UAS
2. to complete the delayed media negotiation Thanks, Nataraju A B > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:sip-implementors- > [EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED] > Sent: Monday, September 18, 2006 8:07 PM > To: [email protected] > Subject: [Sip-implementors] 3-way handshake > > Hi, > > What was the intention behind proposing the need for sending ACK after > 200OK of INVITE under SIP. > > > _______________________________________________ > 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
