Hi all, I would like to asking you about the Time-stamp header in SIP messages, and why this header does not supported in most open SIP servers, Is it recommended or not? Is there any open source support the time stamp header.
Is this true, there are many problem with this technique like: - the time stamp header is optional, and this mean we will use the RTT value(T1) =500 ms, and the result is a lot of retransmission in SIP messages over UDP in bad network conditions. - the cost of parsing SIP message to get this header from the message. - this technique is applied for provisional response for INVITE SIP message, but what about REGISTER message and it's authentication. - Both UAS and UAC must have the same system time to generate a useful result. So therefore both or all SIP devices (think about an intermediate proxy) must have NTP activated. Please Help me; Thanks; Best Regards Mustafa ALRifaee _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
