User's Guide

Table Of Contents
Ensure that the SIM card is inserted in the radio.
The radio is not in an active call.
You cannot press the PTT button.
See SIM Card End-to-End Encryption on page 127.
Procedure:
To enable/disable SIM Card End-to-End Encryption, use one of the following ways:
Press a One-Touch Button ascribed to enabling/disabling SIM Card End-to-End Encryption.
From the home screen, press MenuCrypto MenuCrypto Function. Select
Encryption On to enable or Encryption Off to disable encryption.
Your radio displays prompts indicating your current encryption state: an appropriate status icon
and Encryption On or Encryption Off message.
4.18.2
Setting Clear Call Alarm
When and where to use: Use this menu item to configure an alarm tone notifying about any clear
transmission.
Procedure:
1 From the home screen, press the Menu key.
2 Select Crypto MenuClear Call Alarm.
3 Select Simplex Calls or Duplex Calls.
4 Select one of the following:
Off – the alarm is disabled.
Single – the alarm sounds once at the beginning of a clear call.
Continuous – the alarm sounds periodically throughout a clear call.
4.18.3
Updating Encryption Keys
When and where to use: Use this menu item to update old or incorrect encryption keys.
Procedure:
1 From the home screen, press the Menu key.
2 Select Crypto MenuUpd Encr Keys.
3 Select Upd Group Key to start the update.
NOTICE:
You can update the encryption keys if the End-to-End Encryption is enabled. The keys cannot
be updated when the radio is in a call or in DMO.
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