Multi-Tech Systems MT56DSU-S manual Features

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Chapter 1 - Introduction

1.5Features

The MT56DSU-S provides many useful features. Standard features include V.35 and EIA-232-D interfaces on the data port (DTE device) and a synchronous rate of 56 Kbps on both the data port and trunk, and user- selectable clocking option.

Your Multi-Tech DSU/CSU provides the following features:

•Supports direct connection to the DATAPHONE Digital Data Service (DDS) or compatible network

•Standard EIA-232-D and V.35 interfaces on the data port (DTE device) and DDS interface on the line

•Multiple selectable clocking

-Internal clocking

-DDS (slave) clocking

•Multiple MT56DSU-S-activated diagnostic tests

-Local loopback test

-Digital loopback test

•Multiple Telco-activated diagnostic tests

-DSU loopback test

-CSU loopback test

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Contents MT56DSU-S Syncronous 56K bps Data Service Unit User GuideRevision Date Description Contents Service & Warranty Introduction Introduction About This ManualDescription CSU/DSU BasicsDSU Functions CSU FunctionsFeatures Specifications Front & Back Panel Descriptions Front Panel Front PanelPower Connector 2 RS232 ConnectorLine Connector Back PanelSwitch Settings Switch Settings Mode Position DescriptionShunts ShuntsUnpacking & Setup Telecom Safety Warnings UnpackingSetup Back Panel ConnectionsV.35 Shunt Diagnostics Loopback Test Diagram Loopback TestLine Loopback Test DSU Loopback TestDSU Back-to-Back Test Diagram DSU Back-to-Back TestService & Warranty 2 U.S. and Canadian Customers Multi-Tech Systems, Inc. Warranty & Repairs PoliciesWarranty International Customers outside U.S.A. and Canada International DistributorsRepairs Repair Procedures for U.S. and Canadian CustomersRepair Procedures for International Customers Technical Support Internet SiteAppendix Appendix a Application Examples IntroductionLocal Area Data Set Application DDS Point-To-Point ApplicationDDS Multipoint Polled Application Figure A-3. DDS Multipoint Polled ApplicationAppendix B Interface Signals and Connector Pinouts RJ-48 ConnectorDB25S Connector Pin Description SignalDB25S Connector with V.35 Interface Pin DescriptionLoopback Cable MTS P/N Build InstructionsFigure B-7. Back-toBack Cable Connector Back-To-Back Cable MTS P/NAppendix C Regulatory Information FCC Regulations for Telephone Line InterconnectionCanadian Limitations Notice S000327A