Source note · Enabling mixed mode and encrypted calling in Unified CM
A call registers as secure only if every device in the call registers as secure; one nonsecure device makes the call nonsecure even if the caller's or recipient's phone is secure.
Checked 2026-09-30
If one device registers as nonsecure, the call registers as nonsecure, even if the phone of the caller or recipient registers as secure.
- Vendor
- Cisco
- Product
- Cisco Unified Communications Manager
- Subsystem
- call security status
- Deployment
- on-premises
- Region
- not restricted
- Release range
- 15 and SUs
- Checked
- 2026-09-30
Sources
- Security Guide for Cisco Unified Communications Manager, Release 15 and SUs - Phone Security — Cisco Systems · tier 2 current vendor documentation · Phone Security > interactions / call security status
Cite this note
APA
WarmTransfer. (2026, September 30). Enabling mixed mode and encrypted calling in Unified CM: source note cucm-secure-calling-setup-call-secure-all-devices. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucm-secure-calling-setup-call-secure-all-devices
BibTeX
@misc{warmtransfer-claim-cucm-secure-calling-setup-call-secure-all-devices,
title = {Enabling mixed mode and encrypted calling in Unified CM: source note cucm-secure-calling-setup-call-secure-all-devices},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/cucm-secure-calling-setup-call-secure-all-devices},
note = {Source note cucm-secure-calling-setup-call-secure-all-devices, checked 2026-09-30}
}