Source note · Cisco IP phone registration and TFTP and ITL and CTL
The SBD technote gives the phone menu path Settings > Security Configuration > Trust List for manually deleting the ITL, noting that the path varies by phone model.
Checked 2026-09-24
- Vendor
- Cisco
- Product
- Cisco IP phones on Unified CM
- Subsystem
- ITL
- Deployment
- on-premises
- Region
- not restricted
- Release range
- as of technote update 2023-07-14; model-dependent
- Checked
- 2026-09-24
Sources
- Understand CUCM Security By Default and ITL Operation and Troubleshooting — Cisco Systems · tier 2 current vendor documentation · FAQ: Can I easily delete the ITL file from all phones once the CallManager.pem is lost?
Cite this note
APA
WarmTransfer. (2026, September 24). Cisco IP phone registration and TFTP and ITL and CTL: source note cisco-phone-registration-itl-delete-menu. WarmTransfer. https://warmtransfer.net/knowledge/claims/cisco-phone-registration-itl-delete-menu
BibTeX
@misc{warmtransfer-claim-cisco-phone-registration-itl-delete-menu,
title = {Cisco IP phone registration and TFTP and ITL and CTL: source note cisco-phone-registration-itl-delete-menu},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/cisco-phone-registration-itl-delete-menu},
note = {Source note cisco-phone-registration-itl-delete-menu, checked 2026-09-24}
}