Multi-Tech Systems MT56DSU-S manual Appendix a Application Examples, Introduction

Appendix

Appendix A - Application Examples

Introduction

This section illustrates several types of applications in which the MT56DSU-S is typically used. These types include:

•Local Area Data Set

•DDS point-to-point application

•DDS multipoint (polled) application

Local Area Data Set Application

In this application, two pairs of wires provide the connection between two MT56DSU-S devices. The two pairs can be up to the equivalent of 3 miles of AWG #26 wire at 56 Kbps, or longer for subrate applications.

The figure below depicts a typical Local Area Data Set application.

Up to 3 miles

of AWG 26 wire

@ 56 Kbps

DTE DSU DSU DTE

(Requires two pairs

of interconnection wires)

Figure A-1. Local Area Data Set Application

DDS Point-To-Point Application

In this application, the MT56DSU-S provides the interface between the DDS line and the DTE at your site. Your network provider will provide (at your request) a DDS line connecting the desired locations. The figure below depicts a sample DDS Point-to-point application.

DDS

Network

DTE DSU DSU DTE

Figure A-2. DDS Point-to-Point Application

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