Source note · DTMF methods and interoperability failures
CUBE uses payload types 96 and 97 for fax by default, and Cisco advises the asymmetric payload dtmf command when a third-party device's DTMF payload type conflicts.
Checked 2026-09-24
- Vendor
- Cisco
- Product
- Cisco Unified Border Element
- Subsystem
- payload type negotiation
- Deployment
- on-premises
- Region
- not restricted
- Release range
- IOS XE 17.6 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, payload type note
Cite this note
APA
WarmTransfer. (2026, September 24). DTMF methods and interoperability failures: source note dtmf-interop-cube-fax-payload-conflict. WarmTransfer. https://warmtransfer.net/knowledge/claims/dtmf-interop-cube-fax-payload-conflict
BibTeX
@misc{warmtransfer-claim-dtmf-interop-cube-fax-payload-conflict,
title = {DTMF methods and interoperability failures: source note dtmf-interop-cube-fax-payload-conflict},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/dtmf-interop-cube-fax-payload-conflict},
note = {Source note dtmf-interop-cube-fax-payload-conflict, checked 2026-09-24}
}