Scanned Group Calls; Conventional Operation; Outside Address; Channel Guard - Ericsson EDACS ORION Operator's Manual

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Scanned Group Calls

Receiving a scanned group call is the same as receiving a selected group

call. During the scan hang time, if the radio was programmed for autoselect,

it will transmit back in the same mode it received the call. For example, if a

clear group is entered in the scan list, it will only receive clear calls. If the

same group was available in private and entered in the scan list, it can re-

ceive clear and private calls, provided autoselect was programmed in the ra-

dio. The user can select transmitting on the scanned or selected group. If a

group is entered in the scan list more than once and in different modes (clear,

digital, private), only the first occurrence of the group will be used.

The same outside address (works similar to Channel Guard operation) must

be programmed in the transmitting and receiving radios when Aegis digital

or private operation is enabled. If address is not correct, the radios will not

communicate.

Channel Guard encode is transmitted on analog clear channels only. Channel

Guard decode will operate on either a clear or private channel. The excep-

tion 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 trans-

mit 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.

The ORION radios when operating in the EDACS configuration permit

either voice or data calls to be transmitted or received. The radio can handle

only one type of call at a time; however, selection of either data or voice is

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