Source note · DTMF methods and interoperability failures
On CUBE, DTMF relay is disabled by default on SIP and H.323 dial-peers except SIP INFO, so a relay method has to be configured.
Checked 2026-09-24
- Vendor
- Cisco
- Product
- Cisco Unified Border Element
- Subsystem
- dtmf-relay
- Deployment
- on-premises
- Region
- not restricted
- Release range
- as of technote update 2023-05-15
- Checked
- 2026-09-24
Sources
- Configure DTMF Relay on CUBE — Cisco Systems · tier 2 current vendor documentation · Section on CUBE supported DTMF methods / configuration
Cite this note
APA
WarmTransfer. (2026, September 24). DTMF methods and interoperability failures: source note dtmf-interop-cube-relay-off-by-default. WarmTransfer. https://warmtransfer.net/knowledge/claims/dtmf-interop-cube-relay-off-by-default
BibTeX
@misc{warmtransfer-claim-dtmf-interop-cube-relay-off-by-default,
title = {DTMF methods and interoperability failures: source note dtmf-interop-cube-relay-off-by-default},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/dtmf-interop-cube-relay-off-by-default},
note = {Source note dtmf-interop-cube-relay-off-by-default, checked 2026-09-24}
}