Ericsson EDACS PRISM HP, Руководство оператора

Страница: 73 / 108

Cryptographic keys are transferred to the radio using
a cryptographic Keyloader. Up to seven (7) different
cryptographic keys, numbered 1-7, can be transferred
from a Keyloader and stored in the radio. An individual
key is automatically selected on a per-group/channel
basis according to the radio programming. Groups and
channels within the Aegis system can be programmed
for keys 1-7 (DES and VGE). Up to 8 banks of 7 keys
can be stored for Aegis (DES and VGE) systems. The
bank is specified per system.
DES radios require a DES Keyloader (Option V4025
with software version 3.N or later). VGE radios require
VGE Keyloader (Option V4028 with software version 2.N
or later).
When operating on a group or channel programmed
for private mode, all transmissions are private transmis-
sions and the radio receives clear and private signals.
The status icon display turns on when the private
mode is enabled. If the selected group or channel is
programmed for autoselect capability, the mode may be
toggled between private and clear with the
M
key, then
following the selection mode rules. Radios programmed
for forced private operation do not allow a change of the
transmit mode.
Transferring Keys Into the Radio
The following procedure outlines basic key transfer-
ring steps.
1. Turn the radio off.
73