Source note · DTMF methods and interoperability failures
H.323 (and with it the H.245 alphanumeric and signal DTMF methods) is not supported on CUBE from IOS XE Bengaluru 17.6.1a onwards.
Checked 2026-09-24
H.323 protocol is no longer supported from Cisco IOS XE Bengaluru 17.6.1a onwards.
- Vendor
- Cisco
- Product
- Cisco Unified Border Element
- Subsystem
- dtmf-relay
- Deployment
- on-premises
- Region
- not restricted
- Release range
- IOS XE 17.6.1a onwards
- Checked
- 2026-09-24
Sources
- Cisco Unified Border Element Configuration Guide - Cisco IOS XE 17.6 Onwards - DTMF Relay — Cisco Systems · tier 2 current vendor documentation · DTMF Relay chapter, restriction note on H.323
Cite this note
APA
WarmTransfer. (2026, September 24). DTMF methods and interoperability failures: source note dtmf-interop-cube-h323-removed. WarmTransfer. https://warmtransfer.net/knowledge/claims/dtmf-interop-cube-h323-removed
BibTeX
@misc{warmtransfer-claim-dtmf-interop-cube-h323-removed,
title = {DTMF methods and interoperability failures: source note dtmf-interop-cube-h323-removed},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/dtmf-interop-cube-h323-removed},
note = {Source note dtmf-interop-cube-h323-removed, checked 2026-09-24}
}