Ericsson LBI-39169 - Manual (Page 78)

LBI-39169 GLOSSARY
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16. GLOSSARY
TERM DEFINITION
ACU Alarm and Control Unit. The ACU provides 32 alarm inputs and 8 relay
outputs and allows for external device alarming to the System Manager. The
ACU and Test Unit (TU) form the Test and Alarm Unit (TAU).
Administrator (or Admin or
EDACS Administrator) Administrators are those people responsible for centralized configuration of
EDACS networks. Their role is to install and maintain the system-wide
database, and in the case of Network Management, overview the operation of
the network.
Aegis
 
Aegis
 
is the Ericsson GE's voice scrambling system that employs advanced
Digital Signal Processing (DSP) circuitry. Aegis has two primary modes
−
"Aegis digital" and "Aegis private". Aegis digital mode offers improved weak
signal performance and impedance to unauthorized monitoring. Aegis digital
transmissions are not encrypted. Aegis private mode also offers improved weak
signal performance. In addition, since Aegis private transmissions are
encrypted, Aegis private mode provides very secure communications against
unauthorized monitoring.
Agent Software that enables a device to respond to manager requests to view or
update MIB data, and send traps reporting problems to significant events.
AMTS Advanced Multisite Test System.
API Application Programming Interface. Standard interface to a software
application.
Audio Board The Audio Board routes audio, mobile data and Aegis data between EDACS
radio systems, dispatch consoles, logging recorders, etc. The board digitizes
analog signals applied to its audio inputs and applies the digitized signals to
the TDM bus. It also performs the reverse process for its audio outputs.
AUI Attachment Unit Interface. Connector used with thick Ethernet that often
includes a drop cable.
Battery-backup Holds information in RAM until power is restored or battery is drained.
BCU EDACS Billing Correlation Unit. This EDACS unit converts Integrated
Multisite Controller activity to Call Detail Records which can be used for
billing.
Bridge Used to connect Ethernet to Ethernet with capability to control two-way traffic.
OSI data Link and Physical layers only.
C3 Maestro The C3 Maestro is the CRT-type console that is designed to take advantage of
the advanced features of EDACS. It consists of a specialized audio "tower"
and an IBM PC compatible computer running custom software developed by
Ericsson GE.
CAL Centralized Activity Logger. This EDACS unit is inserted between the IMC
and the System Manager to provide activity information from Basic EDACS,