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INTRODUCTION AE/LZB 119 1892 R1A

INTRODUCTION

The EDACS

C3 Maestro

™

dispatch console for

Windows NT

is a state-of-the-art CRT-based dispatch

console system designed to interface to an EDACS

CEC/IMC Digital Audio Switch. By leveraging the benefits

of IBM

PC-compatible computer hardware and Microsoft’s

Windows NT

operating system software, the C3 Maestro

™

provides advanced console dispatch features for EDACS

radio system networks. Major system components include:

•

an IBM

PC-AT



compatible Personal Computer

(PC) system running Microsoft’s Windows NT

operation system software and custom console

application software developed by Ericsson Inc.;

•

a standard color video display monitor ("CRT"), or

optionally, a touch-screen color video display

monitor for “mouse-less” dispatch operations;

•

a specialized dispatch keyboard (sometimes

referred to as the "custom keyboard");

•

an Enhanced Audio Enclosure which provides

audio conditioning, routing and amplification

functions for the console's audio signals, and

interface/control of external devices such the

dispatch keyboard and for example, if the console

is so equipped, a Call Director (optional

equipment) for telephone patch operations;

•

desk-top or rack-mounted speakers (typically two –

one "select" and one "unselect");

•

other optional accessories such as headsets,

microphones and footswitches;

•

cabling which interconnects the Enhanced Audio

Enclosure to the PC and speakers;

•

cabling which interconnects the PC to the

CEC/IMC (control data links: 100-foot cables

supplied);

•

cabling which interconnects the Enhanced Audio

Enclosure to the CEC/IMC (audio links: 100-foot

cables supplied); and,

•

if the console is a remote console (not co-located

with the CEC/IMC), optional data modem

equipment for the CEC/IMC

⇔

C3 Maestro control

data link is required.

NOTE

Refer to LBI-38662 for a complete description of

the EDACS CEC/IMC Digital Audio Switch.

The C3 Maestro console's video display monitor and

keyboard replace the array of controls and indicators found

on traditional modular/desktop-type consoles. A typical

installation is shown on page 26. Standard console-type

headsets, microphones, and footswitches can be connected

to the C3 Maestro. Also, a variety of other external inputs

and outputs are supported from items such as a paging tone

encoder, call-check recorders and Call Director telephone

patch equipment.

Using the C3 Maestro, a dispatcher can easily monitor

and communicate with a large number of radio unit-

equipped personnel within the EDACS CEC/IMC wide area

(and/or distributed multisite) network. Like an EDACS

mobile or portable radio unit within the network, each

EDACS C3 Maestro console is assigned a unique “logical

ID” (LID) number. This number is sometimes referred to as

a “unit ID” number. Therefore, a dispatcher can perform

trunked group and individual calls throughout the EDACS

radio system as privileged. Calls may also be made on and

received from conventional radio frequency channels if the

CEC/IMC is interconnected to conventional base station

equipment. In addition, calls may also be placed to and

received from other consoles in the CEC/IMC network

either via the intercom or the individual call functions.

The PC's video display monitor displays graphical rep-

resentations of the trunked talk groups, radio units, etc.

being monitored or controlled by the dispatcher. This

graphical user interface (GUI) is highly configurable, thus

providing great custom configuration flexibility for various

dispatch environments. This flexibility not only enhances the

console’s basic dispatch features such as its group call, indi-

vidual call and patch capabilities but, if employed, it greatly

enhances the console’s advanced features such as its ability

to monitor and control CEC/IMC auxiliary input/output

events and its radio unit status monitoring capabilities.

Using any one (1) of three (3) possible user input de-

vices, a console user/dispatcher can issue commands to con-

trol receive and transmit audio signal routing between the

CEC/IMC and audio devices connected to the C3 Maestro

such as microphones and speakers. The C3 Maestro console

application software program running on the PC in-turn

communicates with circuitry inside the Enhanced Audio

Enclosure. This is accomplished via an RS-232 serial link

between the PC and the Enhanced Audio Enclosure. The

three possible user input devices include the specialized

dispatch keyboard, a pointing device such as a mouse or

track-ball, and an optionally available touch-screen monitor.

The following three (3) subsections list the basic,

advanced and optional capability of the console. All basic

and advanced functions are provided with a standard

console equipment package. Each optional function, listed in

the third subsection, is purchased on a per console basis by

obtaining a software license for the respective feature

licensed option.

NOTE

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