Source note · DTMF methods and interoperability failures
Cisco's CUBE technote recommends RFC 2833 toward SIP service providers and both RFC 2833 and KPML toward Unified CM or CME.
Checked 2026-09-24
- Vendor
- Cisco
- Product
- Cisco Unified Border Element
- Subsystem
- design guidance
- 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 · Preferred DTMF methods by scenario
Cite this note
APA
WarmTransfer. (2026, September 24). DTMF methods and interoperability failures: source note dtmf-interop-cisco-preferred-by-scenario. WarmTransfer. https://warmtransfer.net/knowledge/claims/dtmf-interop-cisco-preferred-by-scenario
BibTeX
@misc{warmtransfer-claim-dtmf-interop-cisco-preferred-by-scenario,
title = {DTMF methods and interoperability failures: source note dtmf-interop-cisco-preferred-by-scenario},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/dtmf-interop-cisco-preferred-by-scenario},
note = {Source note dtmf-interop-cisco-preferred-by-scenario, checked 2026-09-24}
}