RFC 3262 says (in the Introduction part): PRACK is a normal SIP message, like BYE. As such, its own reliability is ensured hop-by-hop through each stateful proxy. Also like BYE, but unlike ACK, PRACK has its own response. *If this were not the case, the PRACK message could not traverse proxy servers compliant to RFC 2543 <https://tools.ietf.org/html/rfc2543> [4 <https://tools.ietf.org/html/rfc3262#ref-4>].*
I do not get the meaning of the last sentence. Can somebody please elaborate this point? Thanks, VChandra _______________________________________________ Sip-implementors mailing list Sip-implementors@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
