Multi-Tech Systems
MT56DSU-S
manual
Front & Back Panel Descriptions
Specs
Loopback Test Diagram
Pin Description Signal
Warranty
Diagnostics
Unpacking & Setup
2 RS232 Connector
Switch Settings
Safety
Features
Page 10
Chapter 2 - Front & Back Panel Descriptions
Page 9
Page 11
Image 10
Page 9
Page 11
Contents
MT56DSU-S Syncronous 56K bps Data Service Unit
User Guide
Revision Date Description
Contents
Service & Warranty
Introduction
Introduction
About This Manual
DSU Functions
Description
CSU/DSU Basics
CSU Functions
Features
Specifications
Front & Back Panel Descriptions
Front Panel
Front Panel
Line Connector
Power Connector
2 RS232 Connector
Back Panel
Switch Settings
Switch Settings Mode Position Description
Shunts
Shunts
Unpacking & Setup
Telecom Safety Warnings
Unpacking
Setup
Back Panel Connections
V.35 Shunt
Diagnostics
Loopback Test Diagram
Loopback Test
Line Loopback Test
DSU Loopback Test
DSU Back-to-Back Test Diagram
DSU Back-to-Back Test
Service & Warranty
Warranty
Multi-Tech Systems, Inc. Warranty & Repairs Policies
2 U.S. and Canadian Customers
International Customers outside U.S.A. and Canada
International Distributors
Repair Procedures for International Customers
Repair Procedures for U.S. and Canadian Customers
Repairs
Technical Support
Internet Site
Appendix
Local Area Data Set Application
Appendix a Application Examples
Introduction
DDS Point-To-Point Application
DDS Multipoint Polled Application
Figure A-3. DDS Multipoint Polled Application
Appendix B Interface Signals and Connector Pinouts
RJ-48 Connector
DB25S Connector
Pin Description Signal
DB25S Connector with V.35 Interface
Pin Description
Loopback Cable MTS P/N
Build Instructions
Figure B-7. Back-toBack Cable Connector
Back-To-Back Cable MTS P/N
Appendix C Regulatory Information
FCC Regulations for Telephone Line Interconnection
Canadian Limitations Notice
S000327A
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