From: "Rick Whitesel (rwhitese)" <[EMAIL PROTECTED]> I am involved with a project that consists of a Dialer application talking to a SIP to TDM Gateway that supports outbound dialing and audio detection, e.g. voice detected, modem detected, etc.
One proposal conveys the state of the TDM call from the Gateway to the Dialer application using: * CALL-INFO headers on 180 Ringing messages * a user defined application document type in UPDATE messages (before and after the SIP session is established) to convey information like gateway detection capabilities, "modem detected", etc. * SIP final response codes If *all* of the information is from the gateway to the Dialer, and if the information is not expected to be standardized, it seems like it would be simpler to create a private mime-type, and then attach bodies of that type to 180 provisional responses (for ringing), 183 provisional responses (for other call progress indications), and final responses (for ultimate status). Dale _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
