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4000 Series II - EASi-COM II User Guide

STA0309 - Issue 2.0 Page 11 of 30

1. INTRODUCTION

1.1 System Overview

The EASi-COM II is a Communications System using a central switching matrix for

routing calls between outstations connected in a star format.

The central switching matrix uses a controller for control and configuration purposes

and an analogue switching element allowing multiple routes to be made

simultaneously. Analogue audio, DCC inputs and outputs, are also provided as part of

the EASi-COM II system.

A range of Control Panels is available providing a suitable user interface for making

and receiving calls over the system. These panels feature push buttons configured to

operate specific routes or activate control functions. The key actions are sent as digital

data using a serial link to the central matrix for interpretation by the controller and

information is returned to the control panel by the same method. Audio and data is

connected via standard multi-core twisted pair wiring.

A call is initiated on a control panel by pressing one of the Direct Access Keys (DAK).

This activates crosspoints, located in the Matrix, which make the audio route (or routes)

to the desired destination(s). Routing can be one-way (e.g. talk only) or two-way (talk

and listen simultaneously) and several callers can speak to the same destination at the

same time.

Destinations and sources may be beltpacks, IFBs, 2-wire or 4-wire circuits, or other

panels, individually or grouped.

A camera conference facility is also available, configured via the Matrix DIL switches,

which allows people to communicate in a conference mode. This is similar in operation

to the Conference Ring (Party Line) facilities available in older, more conventional

systems.

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DRAKE 4000 series II Guía de usuario Pagina 12