McDewey

C H A P T E R 46 Secure Tone • Secure Tone Overview, on page 583 • Secure Tone Prerequisites, on page 584 • Secure Tone Configuration Task Flow, on page 584 • Secure Tone Interactions, on page 587 • Secure Tone Restrictions, on page 587 Secure Tone Overview The Secure Tone feature can configure a phone to play a secure indication tone when a call is encrypted. The tone indicates that the call is protected and that confidential information may be exchanged. The 2-second tone comprises three long beeps. If the call is protected, the tone begins to play on a protected phone as soon as the called party answers. When the call is not protected, the system plays a nonsecure indication tone, which comprises six short beeps, on a protected phone. Only callers on protected phones can hear secure and nonsecure indication tones. Callers on phones that are not protected cannot hear these tones. Note The secure and nonsecure indication tones are supported on the following types of calls: • Intracluster to IP-to-IP calls • Intercluster protected calls • IP-to-Time-Division-Multiplexing (TDM) calls through a protected MGCP E1 PRI gateway For video calls, the system plays secure and nonsecure indication tones on protected devices. For video calls, the user may first hear secure indication tone for the audio portion of the call and then nonsecure indication tone for overall nonsecure media. Note A lock icon that is displayed on a Cisco Unified IP Phone indicates that the media are encrypted, but does not indicate that the phone has been configured as a protected device. However, the lock icon must be present for a protected call to occur. Feature Configuration Guide for Cisco Unified Communications Manager, Release 15 and SUs 583