El Miércoles, 2 de Julio de 2008, Victor Pascual Ávila escribió: > Hi Iñaki, > > On Wed, Jul 2, 2008 at 12:05 AM, Iñaki Baz Castillo <[EMAIL PROTECTED]> wrote: > > My question is: > > > > - What does the first value mean? > > 1*(DIGIT) [ "." *(DIGIT) ] > > In the example above it's 0.4. What is it? > > It is the timestamp header field present in the request- It describes > when the UAC sent the request to the UAS, and it is used by the UAC to > compute the round-trip time to the UAS so that it can adjust the > timeout value for retransmissions.
But the only useful information there is the "delay" field that the server adds to the "Timestamp" header, but what is the "timestamp" value by itself? I put an example: INVITE sip:XXX Timestamp: 12.34 It takes 0.5 seconds to the server to send the 100 Trying so: SIP/2.0 100 Trying Timestamp: 12.34 0.5 The useful information there (for the UAC) is the delay field (0.5 seconds) added by the UAS. But what does "12.34" means? Thanks. -- Iñaki Baz Castillo _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
