Ericsson LBI-39001 Betreibershandbuch PDF herunterladen (Seite 34)

5. GLOSSARY

ACU Alarm Control Unit.

CEC Console Electronics Controller.

Console Users Dispatch Operators using EDACS consoles.

CTIS Centralized Telephone Interconnect System.

C3 Type of Console.

DCE Data Communications Equipment.

DID Direct Inward Dial -- Allows callers from the public network to place an individual call to a

radio by dialing a single telephone number, instead of one telephone number to call JESSICA

and a second series of numbers to indicate the Logical ID. To accomplish this, the LID is

mapped to a number. In some cases, the DID number will be the LID.

DTE Data Terminal Equipment.

EDACS Enhanced Digital Access Communications System.

EDACS System

Administrator

Person(s) responsible for configuring and maintaining EDACS, including configuring the

Jessica system to allow both inbound and outbound calls.

Exchange A switching system which serves a group of telephones in the same geographical area.

Extension A telephone line connected to a Private Branch Exchange (PBX).

GETC General Electric Trunking Card.

GID Group Identification -- radio group identification.

HDLC High-Level Data Link Control -- data link layer protocol.

Inbound Calls Phone-originated call to a radio.

ISDN Integrated Services Digital Network.

IMC Integrated Multisite Coordinator.

LAPB Link Access Procedure Balanced -- data link layer protocol.

LBI Lynchburg Book of Instruction.

LCR Least-Cost Routing -- A function that allows the system to automatically select the most

economical route for an outgoing call. The selected route is based on trunk availability, class

of service, time of day, and week.

LID Logical Identification -- individual radio or console ID.

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Ericsson LBI-39001 Betreibershandbuch Seite 34