Motorola MTP3100, Руководство пользователя, Страница: 72 / 132

4.6.3
Air Encryption
NOTICE: This feature is a paid feature.
Air Encryption is a feature that enables encryption of entire communication between the radio and
infrastructure, which results in increased security of calls, messages, and data.
If configured by your service provider, the radio plays a sound and displays
Call & Data Not
Encrypted
when encryption is on and you receive a clear call (unencrypted). This feature provides
service confidentiality between you and the system.
In the TMO Mode, when Air Encryption is enabled on your radio but cannot be supported due to an
infrastructure failure, the following icon appears on the display: . When encryption is not available in
the DMO Mode, the radio displays: .
This menu item allows you only to view air encryption state.
4.6.3.1
Viewing Air Encryption State
Procedure:
1 From the home screen, press the Menu key.
2 Select Security → AirEncrypt .
3 Your radio displays:
•
Air Encryption Is Off
.
•
Air Encryption Is On
.
4.6.3.2
Deleting User Keys
Prerequisites: Ensure that the user key deletion is enabled in the codeplug.
Procedure:
1 Press Side Button 1 → Side Button 1 → Side Button 1 → Side Button 2 → Side Button 2 →
Side Button 2 .
IMPORTANT: The key deletion takes up to 30 seconds. During the period, the battery
must not be removed. Removing the battery during that period may lead to radio
malfunction.
Encryption and/or Authentication keys are deleted. The radio enters Temporary Disable state and the
service provider must manually restore it.
4.6.4
K Validity
Key (K) is a secret key the infrastructure uses to authenticate the radio in the system. It is part of the
authentication that provides service confidentiality between your radio and the system.
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Chapter 4: Main Menu
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