SETTINGS
SETTINGS > SECURITY
ENVOY™ TRANSCEIVER REFERENCE MANUAL 257
CES Key Prefix
The CES Key Prefix entry is used to set a common prefix for all CES secure keys.
You may enter up to 4 alphanumeric characters.
Default value: Corp
Digital Key Prefix
The Digital Key Prefix entry is used to set a common prefix for secure keys used by
digital encryptors. You may enter up to 4 alphanumeric characters.
Default value: TEK
Digital Voice Options
The Digital Voice Options entry sets whether or not the data rate and digital voice
mute options are locked.
The data rate affects the speed with which digitally encrypted transmissions are sent.
The data rate is shown in the centre of the screen as either 1k2 (1200 bit/s) or 2k4
(2400 bit/s). 1k2 is the preferred rate to use in the first instance, then if good HF
propagation conditions exist, the 2k4 rate may be selected. Before choosing to lock
the data rate, you must select the data rate that you want to use.
When the AES-256 digital voice encryptor is switched on, you have the option of
selecting Voice mute (V), Selcall mute (S), or Digital Voice mute (D). Digital Voice
mute enables digitally encrypted voice to be processed through to the user. Voice
mute enables all clear and encrypted voice detected at your station to be processed,
and Selcall mute enables clear and encrypted voice that is directed to your station to
be processed. Before choosing to lock the digital voice mute, you must select the
digital voice mute value that you want to use.
Available values: Lock data rate, Lock digital voice mute
Default value: no selection
Digital Mute Start State
The Digital Mute Start State entry sets the digital mute state of the transceiver at
power up.
If you want the transceiver to:
• return to the mute state it was in prior to the transceiver being switched off then
on again, select Leave as is
• use digital mute at power up, select Mute on
• remain unmuted at power up, select Mute off
Default value: Leave as is
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