Source note · DTMF methods and interoperability failures
Cisco's fix for duplicate digits is to configure dtmf-relay rtp-nte digit-drop on the inbound dial-peer and the out-of-band method on the outbound dial-peer, so CUBE suppresses NTE packets and relays only the out-of-band digits.
Checked 2026-09-24
- Vendor
- Cisco
- Product
- Cisco Unified Border Element
- Subsystem
- DTMF interworking
- Deployment
- on-premises
- Region
- not restricted
- Release range
- current as of 2026-09-24
- Checked
- 2026-09-24
Sources
- Configure DTMF Relay on CUBE — Cisco Systems · tier 2 current vendor documentation · Digit-drop section
Cite this note
APA
WarmTransfer. (2026, September 24). DTMF methods and interoperability failures: source note dtmf-interop-cube-digit-drop-fix. WarmTransfer. https://warmtransfer.net/knowledge/claims/dtmf-interop-cube-digit-drop-fix
BibTeX
@misc{warmtransfer-claim-dtmf-interop-cube-digit-drop-fix,
title = {DTMF methods and interoperability failures: source note dtmf-interop-cube-digit-drop-fix},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/dtmf-interop-cube-digit-drop-fix},
note = {Source note dtmf-interop-cube-digit-drop-fix, checked 2026-09-24}
}