User's Guide

Table Of Contents
4.18.2
Viewing Encryption Status
Procedure:
1 From the home screen, press the Menu key.
2 Select Packet DataEncryption.
3 The encryption state of the ongoing packet data session is displayed:
Packet Data Channel Clear
Packet Data Channel Encrypted
Encryption N/A (clear)
4.19
Crypto Menu
This sub-menu allows you to manage SIM card based End-to-End Encryption.
The End-to-End Encryption is used for:
Encryption of voice transmission in the DMO and TMO Modes.
Encryption of messages transmission in the TMO Mode.
Encryption of messages transmission in the DMO Mode (the radio cannot be in call).
Encryption of position data (GPS) transmission in the TMO and DMO Modes.
Transfer of Operational Tactical Address (OPTA) in the TMO and DMO Modes.
Management of encryption keys in the TMO Mode.
4.19.1
Enabling or Disabling SIM Card End-to-End Encryption
Prerequisites:
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 128.
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.
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