Source note · Unified CM security hardening
The Trust Verification Service (TVS) runs on Unified CM servers and authenticates certificates on behalf of Cisco IP phones, so phones do not need to store every trusted certificate locally.
Checked 2026-09-25
TVS authenticates certificates on behalf of the Cisco IP Phone
- Vendor
- Cisco
- Product
- Unified Communications Manager
- Subsystem
- Security by Default / TVS
- Deployment
- on-premises
- Region
- not restricted
- Release range
- Release 15 and SUs
- Checked
- 2026-09-25
Sources
- Security Guide for Cisco Unified Communications Manager, Release 15 and SUs - Default Security — Cisco Systems · tier 2 current vendor documentation · Default Security > Trust Verification Service
Cite this note
APA
WarmTransfer. (2026, September 25). Unified CM security hardening: source note cucm-security-hardening-tvs-role. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucm-security-hardening-tvs-role
BibTeX
@misc{warmtransfer-claim-cucm-security-hardening-tvs-role,
title = {Unified CM security hardening: source note cucm-security-hardening-tvs-role},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/cucm-security-hardening-tvs-role},
note = {Source note cucm-security-hardening-tvs-role, checked 2026-09-25}
}