After a bulk certificate import, a migrating phone asks its home (source) cluster's TVS to validate the destination cluster's certificates before it accepts the destination ITL.
Checked 2026-10-01
- Vendor
- Cisco
- Product
- Unified Communications Manager
- Subsystem
- TVS
- Deployment
- on-premises
- Region
- not restricted
- Release range
- current as of 2026-10-01
- Checked
- 2026-10-01
Sources
- Manage Bulk Certificates between CUCM Clusters for Phone Migration — Cisco Systems · tier 2 current vendor documentation · Verify / phone migration explanation
Cite this note
APA
WarmTransfer. (2026, October 1). Troubleshooting phone trust and ITL failures in Unified CM: source note cucm-itl-trust-troubleshooting-bulk-cert-home-tvs. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucm-itl-trust-troubleshooting-bulk-cert-home-tvs
BibTeX
@misc{warmtransfer-claim-cucm-itl-trust-troubleshooting-bulk-cert-home-tvs,
title = {Troubleshooting phone trust and ITL failures in Unified CM: source note cucm-itl-trust-troubleshooting-bulk-cert-home-tvs},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/cucm-itl-trust-troubleshooting-bulk-cert-home-tvs},
note = {Source note cucm-itl-trust-troubleshooting-bulk-cert-home-tvs, checked 2026-10-01}
}