Wrong list again, would have suited more on https://www1.ietf.org/mailman/listinfo/avt
Anyway, to answer your questions: The DTMF digit is put in payload part of RTP in the 'event' field. Refer to Section 3.10 in RFC 2833 to know the event corresponding to each digit. The 'duration' field refers to how long a DTMF digit should be played at the recipient. Regarding frequency, it is the modulation frequency of a tone & is already explained in RFC 2833 as: The frequencies of the tones to be added, measured in Hz and represented as a 12-bit unsigned integer. The field size is sufficient to represent frequencies up to 4095 Hz, which exceeds the range of telephone systems. A value of zero indicates silence. A single tone can contain any number of frequencies. Refer to Section 4.2 for examples of common tones. I hope this helps. Regards, Gaurav -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of ManMohan Singh Bisht Sent: Wednesday, November 08, 2006 3:50 PM To: [email protected] Subject: [Sip-implementors] Fwd: Query Note: Forwarded message attached -- Original Message -- From: "ManMohan Singh Bisht" <[EMAIL PROTECTED]> To: [email protected] Subject: Query Hi, I have a query regarding DTMF RFC 2833. In this RFC there are two method described for sending DTMF digits * Send digit (Mean send digit as mentioned in section 3) * Send DTMF tone (Mean send DTMF digit frequence section 4) How are we suppose to put DTMF digit in payload part of RTP. What is meant by digit and frequency. Regards Man Mohan Singh Bisht _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
