
RFC 2833, but retains only the most basic event codes. This memo captures and expands upon the basic framework defined in Signalling, other tone signals, and telephony events in RTP packets. This memo describes how to carry dual-tone multifrequency (DTMF) Official Protocol Standards" (STD 1) for the standardization stateĪnd status of this protocol.

Please refer to the current edition of the "Internet Internet community, and requests discussion and suggestions for This document specifies an Internet standards track protocol for the RTP Payload for DTMF Digits, Telephony Tones, and Telephony Signals Updated by: 4734, 5244 Errata Exist Network Working Group H. RFC 4733: RTP Payload for DTMF Digits, Telephony Tones, and Telephony Signals
