Hi,
I have a basic question regarding ACK being a part of the INVITE transaction only
if final response is non-2xx.
The ack not being a part of invite transaction for 2xx responses is
understandable, since the ACK transmission happens at the TU, and not at the
transaction layer (since a proxy cannot ACK a 2xx, but a UAC should, and there is no
difference to this effect in their transaction layers).
From bis-09 INVITE client transaction state machine, this does not seem to hold
for non-2xx responses. Why is this handling different for 2xx and non-2xx responses?
Why is a proxy allowed to ACK a non-2xx response?
Any clarifications/pointers to information will be really helpful. I could not
find this in the list of FAQs.
Thanks in advance,
rohit
_______________________________________________________
WIN a first class trip to Hawaii. Live like the King of Rock and Roll
on the big Island. Enter Now!
http://r.lycos.com/r/sagel_mail/http://www.elvis.lycos.com/sweepstakes
_______________________________________________
Sip-implementors mailing list
[EMAIL PROTECTED]
http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
