Hi I have a doubt about the dialog concept in RFC 3261.
In Section 4 Overview of Operation, it says that the combination of the To tag, From tag, and Call-ID completely defines a peer-to-peer SIP relationship between two user agent (Alice and Bob) and is referred to as a dialog. In section 12, it says that a dialog is identified at each UA with a dialog ID, which consists of a Call-ID value, a local tag and a remote tag. In section 10.2 Constructing the REGISTER Request, it says that a REGISTER request does not establish a dialog. A REGISTER request contains From tag and a Call-ID. The 200 response to the REGISTER typically contains To tag. As a result, a registration transaction when completed has Call-ID, From tag and To tag to define a peer-to-peer SIP relationship between a SIP endpoint and the Registrar. Why this peer-to-peer relationship is not considered as a dialog? Thanks Guang _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
