Ericsson LBI-39012B - Manual (Page 26)

If the last state of the radio was digital mode, the digital mode will be
enabled on power up. Also the digital mode will be enabled if forced
operation has been programmed in the radio.
If a channel is not programmed for digital mode operation, PVT DIS
will be displayed if an attempt is made to enable digital transmit
mode. It is not possible to operate on this channel in digital mode.
If the radio is programmed for digital mode operation, FRCD PVT
will be displayed if an attempt is made to disable digital transmit
mode. It is not possible to transmit on this channel in clear mode.
If the radio does not have the correct encryption key loaded, NO KEY
# will be displayed and the call will not be transmitted.
3. Continue with standard transmission procedures. A digital mode
access tone will be heard when the PTT button is pressed.
Outside Address
The same outside address (works with similar to Channel Guard operation)
must be programmed in the transmitting and receiving radios when Aegis
digital operation is enabled. If address is not correct, the radios will not
communicate.
Channel Guard
Channel Guard encode is transmitted on analog, clear channels only.
Channel Guard decode will operate on either a clear or digital channel. The
exception is when GE
•
STAR signaling is used (see GE
•
STAR paragraph).
GE
•
STAR
When GE
•
STAR is programmed on a private channel, the radio will
transmit GE
•
STAR in clear mode and then switch to private for the voice
portion of the call. If GE
•
STAR is sent with Channel Guard, then both are sent
in clear mode and then radio switches to private mode. Emergency GE
•
STAR
data burst is transmitted in clear mode.
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