In this case BYE cannot be sent from either side, as it is not even an early dialog (there is no provisional response other than 100). But, if a UA is mis-behaving and sending BYE then the message flow is fine. 481 should be sent for BYE and ACK must be sent and processed for 480 response.
Hope this helps. Thanks & Regards Retesh Chadha _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
