Cisco 7911G - IP Phone VoIP Phone Manual page 42

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-secure call—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...
Check the security level of a call or
conference
Verify that the phone on the other
end of the connection is also secure
Determine if secure calls can be
made in your company
There are interactions, restrictions, and limitations that affect how security features work on
Note
your phone. For more information, ask your system administrator.
34
Then...
Look for a security icon in the top right corner of the call
activity area, next to the call duration timer:
Authenticated call or conference
Encrypted call or conference
Non-secure call or conference
Look for the encrypted lock icon and listen for a security tone
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.
Contact your system administrator.
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