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The Menu
Keypad Lock Notification
When the keypad is locked one of the following instructions is
displayed:
• None - no notification is display.
• Notification Only - Keys Locked is displayed.
• Notification and Instruction - Keys Locked, Press Menu
and * to unlock is displayed.
Air Encryption On/Off
From the main menu, select > Security > Air Encrypt.
This sub-menu allows you to view air encryption On/Off state.
Call encryption provides service confidentiality between you
and the system.
If encryption is on and you receive a clear call (unencrypted),
the MTP850 will display a Call & Data Not Encrypted
message.
Air Encryption Key Deletion
Please check with your Service Provider whether the
terminal is provided with air interface encryption keys.
You can delete the air interface encryption keys from the
terminal by entering the following sequence from the keypad:
* * 0 0 # #
You cannot manually disable Air Encryption (if fitted) from the
menu. This sub-menu only indicates if Air Encryption is enabled
at that moment.
The Air Encryption feature is ONLY enabled depending on
your Service Provider.
Using this feature will disable the terminal,
and your Service Provider will need to re-
enable the terminal.
Deletion is be performed in idle TMO/DMO or Emergency
Operation.
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