The ITL file holds the ITLRecovery certificate, the CallManager certificate of the TFTP server, all TVS certificates in the cluster, and the CAPF certificate.
Checked 2026-10-01
- Vendor
- Cisco
- Product
- Unified Communications Manager
- Subsystem
- ITL
- 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 > Initial Trust List (ITL contents list)
Cite this note
APA
WarmTransfer. (2026, October 1). Troubleshooting phone trust and ITL failures in Unified CM: source note cucm-itl-trust-troubleshooting-itl-contents. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucm-itl-trust-troubleshooting-itl-contents
BibTeX
@misc{warmtransfer-claim-cucm-itl-trust-troubleshooting-itl-contents,
title = {Troubleshooting phone trust and ITL failures in Unified CM: source note cucm-itl-trust-troubleshooting-itl-contents},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/cucm-itl-trust-troubleshooting-itl-contents},
note = {Source note cucm-itl-trust-troubleshooting-itl-contents, checked 2026-10-01}
}