Inference: on releases after 11.5 where show itl reports the ITL is signed by the ITLRecovery certificate, regenerating CallManager and TVS together is probably not the unrecoverable case described for older releases. Cisco does not state this as a recommendation.
inferred · Checked 2026-10-01
- Vendor
- Cisco
- Product
- Unified Communications Manager
- Subsystem
- Certificate management
- Deployment
- on-premises
- Region
- not restricted
- Release range
- 12.x and later
- Status
- inferred
- Checked
- 2026-10-01
Sources
- Regenerate Certificates In Unified Communications Manager — Cisco Systems · tier 2 current vendor documentation · Prerequisites / CallManager and TVS timing note (scope wording)
Cite this note
APA
WarmTransfer. (2026, October 1). Troubleshooting phone trust and ITL failures in Unified CM: source note cucm-itl-trust-troubleshooting-cm-tvs-safe-inference. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucm-itl-trust-troubleshooting-cm-tvs-safe-inference
BibTeX
@misc{warmtransfer-claim-cucm-itl-trust-troubleshooting-cm-tvs-safe-inference,
title = {Troubleshooting phone trust and ITL failures in Unified CM: source note cucm-itl-trust-troubleshooting-cm-tvs-safe-inference},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/cucm-itl-trust-troubleshooting-cm-tvs-safe-inference},
note = {Source note cucm-itl-trust-troubleshooting-cm-tvs-safe-inference, checked 2026-10-01}
}