GLOSSARY

LBI-39169

TERM

 

DEFINITION

 

enables the RSM computer to request status information from radios within the

 

network.

 

Router

A system used to connect separate LANs and WANs into an internet, and to

 

route traffic between the networks. In the Network Manager system, a router is

 

needed to go from Ethernet to T1 physical media. OSI Network, Data Link,

 

and Physical Layers only.

 

RS-232

RSM

A type of serial interface typically used for terminals, modems, and printers.

Request Status Monitor The RSM is an IBM PC compatible computer running custom software developed by Ericsson GE. It allows the system administrator and/or the dispatchers to view status of EDACS units within the CEC/IMC network. Status information is typically initiated (transmitted) by the radio operator to identify the current condition (in route, at scene, etc.) of the unit.

SCAT

Single-Channel Autonomous Trunking. In EDACS, SCAT is a trunked system

 

consisting of a single failsoft repeater and a downlink GETC. Operationally, it

 

functions as a control channel or a working channel, depending on the trunked

 

service required. In its idle state, SCAT operates as a control channel. When a

 

channel request is made, SCAT assigns the call to itself and converts to a

 

working channel. EDACS address hierarchy is maintained as are many

 

trunking features.

Shell

An HP-UX command interpreter (CSHELL, KORN, etc.), providing a working

 

environment interface for the user. When user logs in, the Session Manager

 

starts HP VUE applications that were running during a previous session.

Simple Network Management

The Simple Network Management Protocol (SNMP) is a protocol that enables

Protocol

a management station to configure, monitor, and receive trap (alarm) messages

 

from a Network Element. It also provides additional administrative structure,

 

authentication, and privacy.

Simulcast

Simultaneous Broadcast by two or more transmitters located at different sites

 

operating on the same RF frequency.

site

This term normally refers to EDACS radio equipment at a single specific

 

location.

Site Controller

A computer running Ericsson-developed application software that controls the

 

moment-to-moment trunking process, plus such features as call validation, unit

 

enable/disable, dynamic regrouping, and queuing management. The Site

 

Controller communicates with the System Manager over an appropriate link.

Site Icon

The Site icon consists of physical devices located in one geographic location

 

such as the Site Controller, ELI, ACU, PMU, TU, and Channels.

Site Number

This is the EDACS Site Number which uniquely identifies the Site on a

 

particular Node.

SM

See System Manager.

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Ericsson LBI-39169 manual Rsm, Scat