Specifications

LBI-39100
7
INTRODUCTION
The EDACS
®
C3 Maestro
™
console system is a state-
of-the-art CRT-based dispatch console system designed to
interface to an EDACS
®
CEC/IMC Digital Audio Switch.
Equipped with an Enhanced Audio Enclosure, the
C3 Maestro
™
provides advanced console dispatch features
for EDACS radio system networks. The complete system
consists of:
•
an IBM
®
PC-AT

compatible Personal Computer
(PC) system running MS-DOS
®
operating system
software and custom C3 Maestro application
software developed by Ericsson Inc., a color video
display monitor ("CRT") and a standard PC
keyboard
•
a 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 Enhanced Audio
Enclosure and the PC to the CEC/IMC (control
data and audio links; 100-foot cables supplied)
•
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
("CRT") and keyboard replace the array of controls and
indicators found on traditional modular/desktop-type
consoles. 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 pager, call-check recorders and Call
Director telephone patch equipment.
Using the C3 Maestro console, a dispatcher can monitor
and communicate with a large number of personnel on the
EDACS CEC/IMC wide area network. Just like an EDACS
mobile or portable radio, each EDACS C3 Maestro console
is assigned a unique logical ID (LID) number. A typical C3
Maestro console installation is shown in the outline diagram
on page 15.
The PC's video display monitor displays graphical
representations of the radios being monitored or controlled
by the dispatcher. Using the Dispatch Keyboard, a
dispatcher can issue commands to control 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 application
software program running on the PC in-turn controls
circuitry inside the Enhanced Audio Enclosure. This is
accomplished via an RS-232 serial link between the PC and
the Enhanced Audio Enclosure.
DESCRIPTION
PERSONAL COMPUTER
The PC within the C3 Maestro console system provides
most computer processing functions for the console.
Software includes the Microsoft's MS-DOS
®
operating
system and a custom C3 Maestro application program
developed by Ericsson Inc. This custom program
automatically starts when the computer is "booted". PC
components also include the video display monitor ("CRT")
and a standard PC keyboard.
Video Display Monitor ("CRT")
The PC's video display monitor provides all visual
dispatch control indications to the operating dispatcher. This
color monitor is typically of a VGA or super-VGA
resolution. Basic screen layout is shown in Figure 1. Screen
areas include:
•
Module Display Area
−
Fourteen (14)
communication modules are displayed at all times
in the upper portion of the screen. Each module
provides instant communication access to a talk
group, an individual unit, a conventional channel,
or another console. Eight (8) pages of fourteen (14)
modules are available for a total of 112 unique
communication modules. Each module can be
programmed by the console operator.
NOTE