Hi SIP definitely follows OSI reference model. SIP is said to be application layer protocol because it closely resembles the semantics of application layer protocols like HTTP.
SIP: combination of application and session layers SDP: session and presentation TCP/USP: Transport IP: Network Regards Ranjit -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of jafer sharif mohammed Sent: Sunday, January 08, 2006 2:08 PM To: [email protected] Subject: [Sip-implementors] SIP PROTOCOL LAYER Dear, Please let me know whether SIP protocol structure resembles the OSI reference modle or it falls under OSI model Also let me know why we say SIP to be a Application Layer Signalling Protocol. Waiting for reply. _______________________________________________ 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
