McDewey

All phones that support security icons display call security level. • A shield icon appears for calls with authenticated level of signaling security. A shield identifies a secured connection between Cisco IP devices, which means that the devices are authenticated and are using encrypted signaling. • A lock icon appears for calls with encrypted media, which means that the devices are using encrypted signaling and encrypted media. Some phone models only display the lock icon. See the respective Cisco IP Phones documentation you are using for more information. Note The security status of a call can change for point-to-point, intracluster, intercluster, and multihop calls. SCCP line, SIP line, and H.323 signaling support notification of call security status changes to participating endpoints. The audio and video call provide basis for the call security status. The call is secure only if both the audio and video are secure. The “Override BFCP Application Encryption Status When Designating Call Security Status” service parameter displays a lock icon when the parameter value is True and audio is secure. This condition ignores the security statuses of all other media channels. The default parameter value is False. Note For conference and barge calls, the security icon displays the security status for the conference. Security Guide for Cisco Unified Communications Manager, Release 15 and SUs 8 An Introduction to Unified CM Security Common Icons