> Is this a valid behavior? > Is it allowed to send 405 in this scenario?
Yes; the behavior is valid. Just because UPDATE was allowed, it doesn't mean that it must continue to be allowed. However, the behavior that you are describing is more prevent with B2BUAs reconnecting dialogs that do and don't support UPDATE. _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
