Security Guide for Cisco Unified Communications Manager, Release 15 and SUs - Certificate Authority Proxy Function

Publisher

Cisco Systems

URL

https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/security/15_0/cucm_b_security-guide-release-15/cucm_m_certificate-authority-proxy-function_su2_reorg.html

Published

2026-09-22

Updated

unknown

Accessed

2026-09-30

HTTP status

200

License

Cisco documentation; all rights reserved; no-redistribution; short excerpts and locators only

Source notes citing this source

• The Cisco Certificate Authority Proxy Function service is activated on the publisher from Cisco Unified Serviceability > Tools > Service Activation; Online CA mode also needs the Cisco Certificate Enrollment Service. in context
• The per-phone Certificate Operation field offers Install/Upgrade to deploy an LSC, Delete to remove it, and Troubleshoot to diagnose certificate issues. in context
• CAPF issues Locally Significant Certificates (LSCs) to supported Cisco IP phones, authenticates phones in mixed mode, upgrades existing LSCs and retrieves phone certificates for troubleshooting. in context
• CAPF runs in one of three modes: Cisco Authority Proxy Function (the default, where CAPF signs LSCs itself), Online CA (an external CA signs automatically) or Offline CA (CSRs are downloaded, signed externally and uploaded manually). in context
• LSC status can be checked on the Phone Configuration page, in CAPF reports, or from Find and List Phones. in context

Cite this source record

APA

WarmTransfer. (2026, September 22). Security Guide for Cisco Unified Communications Manager, Release 15 and SUs - Certificate Authority Proxy Function. WarmTransfer. https://warmtransfer.net/knowledge/sources/cisco-cucm-sec15-capf

BibTeX

@misc{warmtransfer-cisco-cucm-sec15-capf,
  title  = {Security Guide for Cisco Unified Communications Manager, Release 15 and SUs - Certificate Authority Proxy Function},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/sources/cisco-cucm-sec15-capf},
  note   = {Cisco Systems, accessed 2026-09-30}
}