> Based on that 200 OK, should the PBX respond with > an ACK directly back to the proxy, or to the SBC?
Based upon what you provided, the ACK should traverse the Route locations until it reaches the SBC similar to the BYE within RFC 3621 section 16.12.1.1 example. Within your question, all of the middle boxes added Record-Route. Thus the ACK would traverse all of the middle boxes before reaching the SBC. _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
