Motorola TETRA MTM5400 User Manual

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: .
4.6.3.1
Viewing Air Encryption State
Procedure:
1 From the home screen, press the Menu key.
2 Select Security→AirEncrypt.
Your radio displays:
• Air Encryption Is Off – The Air Encryption is not activated.
• Air Encryption Is On – The Air Encryption is activated.
4.6.3.2
Deleting User Keys
IMPORTANT: The key deletion takes up to 30 seconds.
Prerequisites: Ensure that the user key deletion is enabled in the codeplug.
Procedure:
Press *→*→0→0→#→#.
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.
4.6.4.1
Verifying K Validity
Procedure:
1 From the home screen, press the Menu key.
2 Select Security→K Validity.
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.
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Chapter 4 : Main Menu
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Motorola TETRA MTM5400 Specifications

General

Operating Temperature	-30°C to +60°C
IP Rating	IP54
Channels	Up to 1000
RF Power Output	10W
Frequency Bands	380-430 MHz, 806-870 MHz