Source note · Enabling mixed mode and encrypted calling in Unified CM

After any utils ctl CTL update, all Encrypted and Authenticated phones must be reset for the CTL file update to take effect.

Checked 2026-09-30

Ensure that you reset all the Encrypted and Authenticated phones for the CTL file updates to take effect.

Vendor: Cisco
Product: Cisco Unified Communications Manager
Subsystem: CLI
Deployment: on-premises
Region: not restricted
Release range: 15 and SUs
Checked: 2026-09-30

Sources

Command Line Interface Reference Guide for Cisco Unified Communications Solutions, Release 15 and SUs - Utils Commands — Cisco Systems · tier 2 current vendor documentation · utils ctl > Usage Guidelines

Cite this note

APA

WarmTransfer. (2026, September 30). Enabling mixed mode and encrypted calling in Unified CM: source note cucm-secure-calling-setup-utils-ctl-reset-phones. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucm-secure-calling-setup-utils-ctl-reset-phones

BibTeX

@misc{warmtransfer-claim-cucm-secure-calling-setup-utils-ctl-reset-phones,
  title  = {Enabling mixed mode and encrypted calling in Unified CM: source note cucm-secure-calling-setup-utils-ctl-reset-phones},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/claims/cucm-secure-calling-setup-utils-ctl-reset-phones},
  note   = {Source note cucm-secure-calling-setup-utils-ctl-reset-phones, checked 2026-09-30}
}

Read in context