Cisco Systems 7931G manual If you want to Then

Advanced Call Handling

•Protected call—The phone is receiving and transmitting encrypted audio (your conversation) with another phone. A protected call provides a similar level of security as an encrypted call, but adds additional security. If the call is protected at both ends, a security tone plays at the beginning of the conversation. Some features, such as conference calling, shared lines, Extension Mobility, and join across lines are not available when protected calling is configured. Protected calls are not authenticated.

•Non-securecall—At least one of the participating phones or the connection does not support these security features, or the phones cannot be verified.

If you want to...	Then...
Check the security level of a call or	Look for a security icon in the top right corner of the call
conference	activity area, next to the call duration timer:
	Authenticated call or conference
	Encrypted call or conference
	Non-secure call or conference
Verify that the phone on the other	Look for the encrypted lock icon and listen for a security tone
end of the connection is also secure	at the beginning of the call.
	When encrypted calling is configured on your phone, the lock
	icon is displayed. However, the conversation is protected only
	when the security tone plays at the beginning of a call,
	indicating that the call is protected on both ends of the call. If
	your call is connected to a non-protected phone, the secure
	tone is not played.
Determine if secure calls can be	Contact your system administrator.
made in your company

Note There are interactions, restrictions, and limitations that affect how security features work on your phone. For more information, ask your system administrator.

Cisco Unified IP Phone 7931G for Cisco Unified Communications Manager 6.0 47