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Comparison to RFC-3959 3959 is simpler? Probably not simpler in many, if not most cases. No BBUAs are necessary if client establishes separate dialog. Possible synchronization problems? Client knows to end early media dialog when RTP payload type switches in media stream to the “final” payload type. Requirement to use GRUUs? Usage of a GRUU for the early media dialog is entirely optional. Many types of early media are not provided by an element associated with the final set of endpoints that may accept the session. “Does not introduce service interaction issues related to services that may be wrongly applied to the new dialog?” What? Better Firewall management than RFC 3959 Client can reuse the interface established for “final” media for early media dialogs. No special SBC behavior, etc. |