Bulk ITL reset procedure: run utils itl reset localkey or remotekey, confirm with show itl, then go to System > Enterprise Parameters in Unified CM Administration and click Reset so devices restart and fetch the new ITL.
Checked 2026-10-01
- Vendor
- Cisco
- Product
- Unified Communications Manager
- Subsystem
- ITLRecovery
- Deployment
- on-premises
- Region
- not restricted
- Release range
- 12.5(1)SU3 through 15 and SUs
- Checked
- 2026-10-01
Sources
- Security Guide for Cisco Unified Communications Manager, Release 15 and SUs - Default Security — Cisco Systems · tier 2 current vendor documentation · Default Security > Perform Bulk Reset of ITL File
Cite this note
APA
WarmTransfer. (2026, October 1). Troubleshooting phone trust and ITL failures in Unified CM: source note cucm-itl-trust-troubleshooting-itl-reset-procedure. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucm-itl-trust-troubleshooting-itl-reset-procedure
BibTeX
@misc{warmtransfer-claim-cucm-itl-trust-troubleshooting-itl-reset-procedure,
title = {Troubleshooting phone trust and ITL failures in Unified CM: source note cucm-itl-trust-troubleshooting-itl-reset-procedure},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/cucm-itl-trust-troubleshooting-itl-reset-procedure},
note = {Source note cucm-itl-trust-troubleshooting-itl-reset-procedure, checked 2026-10-01}
}