User's Guide

Table Of Contents
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.
4.8.3.1
Viewing Air Encryption State
Procedure:
1 From the home screen, press the Menu key.
2 Select SecurityAirEncrypt.
Your radio displays:
Air Encryption Is Off.
Air Encryption Is On.
4.8.3.2
Deleting User Keys
Prerequisites: Ensure that the user key deletion is enabled in the codeplug.
Procedure:
1 Press Side Button 1Side Button 1Side Button 1Side Button 2Side 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.
4.8.4
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.
4.8.4.1
Verifying K Validity
Procedure:
1 From the home screen, press the Menu key.
2 Select SecurityK Validity.
3 Your radio displays:
K is Valid – the infrastructure can authenticate your radio.
K is Invalid – the infrastructure is unable to authenticate your radio. Please call your
service provider to restore the key to your radio.
MN001488A01-BF (en-US)
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