Hi,
I have a basic doubt regarding Timer C.
Section 16.6 bullet 11
"In order to handle the case where an INVITE request never generates a
final response, the TU uses a timer which is called timer C. Timer C
MUST be set for each client transaction when an INVITE request is proxied.
The timer MUST be larger than 3 minutes. Section 16.7 bullet 2
discusses how this timer is updated with provisional responses, and
Section 16.8 discusses processing when it fires."
From this it is clear that Timer C should be started when request is
proxied.
My question here is what is the use of Timer B in Transaction Stateful
Proxies.
From my understanding once Timer B fires the transaction layer would
destroy the
client transaction.
Starting the Timer C after receiving the first 1xx response and
refreshing it on subsequent
provisional responses sounds fine. This is the behaviour given in
bis-05. Why has this
been changed in bis-09.
Thanks and Regards,
Vijay
This message is proprietary to Hughes Software Systems Limited (HSS) and is
intended solely for the use of the individual to whom it is addressed. It
may contain privileged or confidential information and should not be
circulated or used for any purpose other than for what it is intended. If
you have received this message in error, please notify the originator
immediately. If you are not the intended recipient, you are notified that
you are strictly prohibited from using, copying, altering, or disclosing
the contents of this message. HSS accepts no responsibility for loss or
damage arising from the use of the information transmitted by this email
including damage from virus.
_______________________________________________
Sip-implementors mailing list
[EMAIL PROTECTED]
http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
