Source note · Troubleshooting Cisco IP phone registration
The cluster security mode is shown under System > Enterprise Parameters as Cluster Security Mode, 1 for mixed mode and 0 for non-secure, and cannot be set on that page.
Checked 2026-09-24
You can't configure this value in Cisco Unified CM Administration page.
- Vendor
- Cisco
- Product
- Unified Communications Manager
- Subsystem
- cluster security mode
- Deployment
- on-premises
- Region
- not restricted
- Release range
- Release 15 and SUs
- Checked
- 2026-09-24
Sources
- Security Guide for Cisco Unified Communications Manager, Release 15 and SUs - Security Modes — Cisco Systems · tier 2 current vendor documentation · Security Modes > verify cluster security mode
Cite this note
APA
WarmTransfer. (2026, September 24). Troubleshooting Cisco IP phone registration: source note cisco-phone-registration-troubleshooting-check-mode. WarmTransfer. https://warmtransfer.net/knowledge/claims/cisco-phone-registration-troubleshooting-check-mode
BibTeX
@misc{warmtransfer-claim-cisco-phone-registration-troubleshooting-check-mode,
title = {Troubleshooting Cisco IP phone registration: source note cisco-phone-registration-troubleshooting-check-mode},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/cisco-phone-registration-troubleshooting-check-mode},
note = {Source note cisco-phone-registration-troubleshooting-check-mode, checked 2026-09-24}
}