Security Guide for Cisco Unified Communications Manager, Release 15 and SUs - Phone Security

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_phone-security_reorg.html

Published

2026-09-22

Updated

unknown

Accessed

2026-09-24

HTTP status

200

License

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

Source notes citing this source

• Before applying a security profile that uses certificates, the phone must hold a Locally Significant Certificate (LSC) or Manufacture-Installed Certificate (MIC); if it has none, apply a non-secure profile and install a certificate through the CAPF settings on the Phone Configuration window. in context
• A phone security profile's Device Security Mode is Non Secure (a TCP connection to Unified CM), Authenticated (TLS with NULL/SHA for signalling) or Encrypted (adds signalling encryption), and secure modes use TLS as the transport. in context
• Unified CM retains the device's authentication and encryption status when a user uses Cisco Extension Mobility on it. in context
• For SIP phones that support EM, Unified CM uses the digest credentials of the logged-in EM end user, as set in End User Configuration. in context

Cite this source record

APA

WarmTransfer. (2026, September 22). Security Guide for Cisco Unified Communications Manager, Release 15 and SUs - Phone Security. WarmTransfer. https://warmtransfer.net/knowledge/sources/cisco-cucm-security-15-phone-security

BibTeX

@misc{warmtransfer-cisco-cucm-security-15-phone-security,
  title  = {Security Guide for Cisco Unified Communications Manager, Release 15 and SUs - Phone Security},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/sources/cisco-cucm-security-15-phone-security},
  note   = {Cisco Systems, accessed 2026-09-24}
}