> can any one help me to find in which real time scenario, > on behalf of PRACK, UAS generates 1XX, 3XX and 485 responses.
Unfortunately, it depends upon who you ask. Some vendors interpret RFC 3262 as though PRACK is like any other request within dialog. Other vendors basically interpret it as though the only two valid responses are 200 and 481. Concerning 1xx, see RFC 4320. The following is one of the many threads which discuss the RFC 3262 ambiguity. http://www.ietf.org/mail-archive/web/sipping/current/msg15146.html _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
