When Unity Connection is integrated with Unified CM over SCCP and calls arrive through IOS VoIP dial-peer gateways, the troubleshooting guide attributes ignored key presses to DTMF not being relayed and gives dtmf-relay h245-alphanumeric as the gateway fix.
Checked 2026-10-02
- Vendor
- Cisco
- Product
- Cisco Unity Connection
- Subsystem
- DTMF
- Deployment
- on-premises
- Region
- not restricted
- Release range
- Release 15 docs current as of 2026-10-02
- Checked
- 2026-10-02
Sources
- Troubleshooting Guide for Cisco Unity Connection Release 15 - Troubleshooting User and Administrator Access — Cisco Systems · tier 2 current vendor documentation · section: Unity Connection Not Responding to Key Presses
Cite this note
APA
WarmTransfer. (2026, October 2). Troubleshooting Unity Connection voicemail login and PIN failures: source note unity-connection-login-troubleshooting-dtmf-sccp-gateway. WarmTransfer. https://warmtransfer.net/knowledge/claims/unity-connection-login-troubleshooting-dtmf-sccp-gateway
BibTeX
@misc{warmtransfer-claim-unity-connection-login-troubleshooting-dtmf-sccp-gateway,
title = {Troubleshooting Unity Connection voicemail login and PIN failures: source note unity-connection-login-troubleshooting-dtmf-sccp-gateway},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/unity-connection-login-troubleshooting-dtmf-sccp-gateway},
note = {Source note unity-connection-login-troubleshooting-dtmf-sccp-gateway, checked 2026-10-02}
}