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Note There are interactions, restrictions, and limitations that affect how security features work on
your phone. For more information, ask your system administrator.
Tracing Suspicious Calls
If you are receiving suspicious or malicious calls, your system administrator can add the Malicious Call
Identification (MCID) feature to your phone. This feature enables you to identify an active call as
suspicious, which initiates a series of automated tracking and notification messages.
Prioritizing Critical Calls
(SCCP phones only)
In some specialized environments, such as military or government offices, you might need to make and
receive urgent or critical calls. If you have the need for this specialized call handling, your system
administrator can add Multilevel Precedence and Preemption (MLPP) to your phone.
Keep these terms in mind:
• Precedence indicates the priority associated with a call.
Verify that the phone on the other
end of the connection is also secure
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.
Determine if secure calls can be
made in your company
Contact your system administrator.
If you want to... Then...
Notify your system
administrator about a
suspicious or harassing call
Press MCID or Malicious Call ID.
Your phone plays a tone and displays the message, “MCID
successful.”
If you want to... Then...