Source note · Planning a Unified CM upgrade

Recovering phones from an untrusted state requires the ITL Recovery key. Cisco's tech note says to keep a copy (file get tftp ITLRecovery.p12) in addition to DRS backups.

Checked 2026-09-25

The ITL Recovery key is required in order to recover phones when they enter an untrusted state.

Vendor: Cisco
Product: Unified Communications Manager
Subsystem: Security by Default / ITL
Deployment: on-premises
Region: not restricted
Release range: 10.0(1) and later
Checked: 2026-09-25

Sources

Unified Communications Manager ITL Enhancements in Version 10.0(1) — Cisco Systems · tier 2 current vendor documentation · ITL Recovery key / backup section

Cite this note

APA

WarmTransfer. (2026, September 25). Planning a Unified CM upgrade: source note cucm-upgrade-planning-itlrecovery-key-backup. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucm-upgrade-planning-itlrecovery-key-backup

BibTeX

@misc{warmtransfer-claim-cucm-upgrade-planning-itlrecovery-key-backup,
  title  = {Planning a Unified CM upgrade: source note cucm-upgrade-planning-itlrecovery-key-backup},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/claims/cucm-upgrade-planning-itlrecovery-key-backup},
  note   = {Source note cucm-upgrade-planning-itlrecovery-key-backup, checked 2026-09-25}
}

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