RFC 4733 assigns event codes 0-9 to digits 0-9, 10 to *, 11 to #, and 12-15 to A-D.
Checked 2026-10-02
- Vendor
- not restricted
- Product
- not restricted
- Subsystem
- RTP telephone-event
- Deployment
- standard
- Region
- not restricted
- Release range
- RFC 4733
- Checked
- 2026-10-02
Sources
- RFC 4733: RTP Payload for DTMF Digits, Telephony Tones, and Telephony Signals — IETF / RFC Editor · tier 1 standards and regulators · Section 3.2, DTMF named events table
Cite this note
APA
WarmTransfer. (2026, October 2). Troubleshooting DTMF digits not detected in Webex Contact Center flows: source note wxcc-dtmf-troubleshooting-rfc4733-event-codes. WarmTransfer. https://warmtransfer.net/knowledge/claims/wxcc-dtmf-troubleshooting-rfc4733-event-codes
BibTeX
@misc{warmtransfer-claim-wxcc-dtmf-troubleshooting-rfc4733-event-codes,
title = {Troubleshooting DTMF digits not detected in Webex Contact Center flows: source note wxcc-dtmf-troubleshooting-rfc4733-event-codes},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/wxcc-dtmf-troubleshooting-rfc4733-event-codes},
note = {Source note wxcc-dtmf-troubleshooting-rfc4733-event-codes, checked 2026-10-02}
}