A proxy is required to send only one '100 Trying' message. Normally the UAS will send one or more of the 18x responses as the call proceeds (e.g. 180 Ringing when the user is being alerted). The UAC decides how long to wait for a final response.
----- Original Message ----- From: "uy do" <[EMAIL PROTECTED]> > Hello, > > As soon as the proxy receives an INVITE, it sends back to the client a > TRYING. > My question is the proxy only sends one TRYING, or it keeps sending TRYING > at a regular time? If the latter is correct, how long does it take the UAS > to resend the TRYING? > Is there any place in the rfc that I can read further? > Thanks, > Uy _______________________________________________ Sip-implementors mailing list [EMAIL PROTECTED] http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
