Hi, this is a slippery topic. T1 is defined as a round trip time estimation, with 500ms as default and initial setting. So on the one hand it may even change dynamically over the time, accomodating the actual network branch latency. But on the other hand, in order to modify T1 you have to be sure that the TM on other side does the very same thing. Since there are no ways to convey this information or to realize whether the peer performs a kind of RTT estimation, I would say that actually 500ms IS the mandatory interval, unless you know that all TMs you can deal with within the network now and in the future use another value.
Ettore Benedetti THALES COMMUNICATIONS B.V. Bestevaer 46, 1271 ZA Huizen The Netherlands Unclassified >>> "Nataraju A B" <[EMAIL PROTECTED]> 11/28/05 12:49:53 PM >>> SIP state machine does not depend on the actual timer values. but designed in multiples of T1 timer. whose default value been assumed to be 500ms but its not a mandatory to have 500ms for T1 timer... we can have diff valuer of T1 based on network topology.. Thanks & Regards, Nataraju A.B. -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Rayees Khan Sent: Monday, November 28, 2005 1:53 PM To: Suganya Bharathi Cc: [email protected] Subject: Re: [Sip-implementors] retransmit time for reinvite I believe it is 500 ms regards Rayees [EMAIL PROTECTED] wrote: ----- To: [email protected] From: suganya <[EMAIL PROTECTED]> Sent by: [EMAIL PROTECTED] Date: 11/28/2005 06:58AM Subject: [Sip-implementors] retransmit time for reinvite Hi all, What is the retransmit time and timeout for re-invite requests. I did not find this detail in rfc 3261. This rfc says that the processing rules of re-invite is same as those of invite request. _______________________________________________ Sip-implementors mailing list [email protected] http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors *****FSS-Private *****" DISCLAIMER: This message is proprietary to Flextronics Software Systems Limited (FSS) 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. FSS 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 _______________________________________________ Sip-implementors mailing list [email protected] http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
