Source note · DTMF methods and interoperability failures
When CUBE interworks rtp-nte to an out-of-band method without digit-drop, the same digit is sent both in RTP and out-of-band and the far end sees duplicate digits.
Checked 2026-09-24
- Vendor
- Cisco
- Product
- Cisco Unified Border Element
- Subsystem
- DTMF interworking
- 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 · Digit-drop section
Cite this note
APA
WarmTransfer. (2026, September 24). DTMF methods and interoperability failures: source note dtmf-interop-cube-duplicate-digits-cause. WarmTransfer. https://warmtransfer.net/knowledge/claims/dtmf-interop-cube-duplicate-digits-cause
BibTeX
@misc{warmtransfer-claim-dtmf-interop-cube-duplicate-digits-cause,
title = {DTMF methods and interoperability failures: source note dtmf-interop-cube-duplicate-digits-cause},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/dtmf-interop-cube-duplicate-digits-cause},
note = {Source note dtmf-interop-cube-duplicate-digits-cause, checked 2026-09-24}
}