Private Operation; Receiving An Encrypted Call; Transmitting An Encrypted Call - Ericsson EDACS ORION Operator's Manual

PRIVATE OPERATION

Receiving An Encrypted Call

When receiving, the radio automatically switches between clear or private
operation. If the transmission being received is an encrypted transmission, it
will be decrypted, the PVT keylight (System Model) or OPTION keylight
(Scan Model) will flash, the receiver will unsquelch and the message will be
heard in the speaker. For this to occur, the selected group or channel must be
programmed for private operation and the correct cryptographic key must be
loaded into the radio.

Transmitting An Encrypted Call

1. Select the desired group or channel.
2. Place the radio in private mode by pressing the PVT button (System
Model) or
O
keylight (System Model) or OPTION keylight (Scan Model) will be on.
If the last state of the radio was private mode, the private mode will be
enabled on power up. Also the private mode will be enabled if forced op-
eration has been programmed in the radio
If a group or channel is not programmed for private mode operation,
PVT DIS will be displayed if an attempt is made to enable private trans-
mit mode. It is not possible to operate on this group/channel in private
mode.
If the radio is programmed for forced private transmit operation, FRCD
PVT will be displayed if an attempt is made to disable private transmit
mode. It is not possible to transmit on this group/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 private mode access
tone will be heard when the PTT button is pressed.
50
(Scan Model). When private mode is enabled, the PVT