Hi,
I have a general doubt regarding the sequence of response codes from a
proxy. When a proxy receives a request from an UA, say user1 destined to
user2, then does proxy always sends back a 100 trying response to user1
before sending a 180 ringing? Or is it that 100 trying is only done in case
of forking requests?
I will quote the RFC for 100 trying...
"This response indicates that the request has
been received by the
next-hop server and that some unspecified
action is being taken on
behalf of this call (for example, a
database is being consulted).
This response, like all other provisional
responses, stops
retransmissions of an INVITE by a UAC. The
100 (Trying) response is
different from other provisional responses,
in that it is never
forwarded upstream by a stateful proxy."
Regards,
Vineet Menon
_______________________________________________
Sip-implementors mailing list
[email protected]
https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
