DB25S Connector with V.35 Interface | Multi-Tech Systems MT56DSU-S

Appendix

DB25S Connector with V.35 Interface

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Figure B-3. Connector

DESCRIPTION

The DB25 connector also ties the MT56DSU-S to a DTE with a V.35 interface. When a V.35 interface device is connected to a MT56DSU-S, the internal shunt has to be moved to the V.35 position. The V.35 interface for the DB25 connector has the following pinout configuration.

PIN IDENTIFICATION

Pin Description

1Chassis Ground

7Signal Ground

4Request To Send

5Clear To Send

6Data Set Ready

8Carrier Detect

20Data Terminal Ready

2Transmit Data (A)

12Transmit Data (B)

3Receive Data (A)

22Receive Data (B)

15Transmit Clock (A)

21Transmit Clock (B)

17Receive Clock (A)

18Receive Clock (B)

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Multi-Tech Systems MT56DSU-S manual DB25S Connector with V.35 Interface, Pin Description

Contents

User Guide MT56DSU-S Syncronous 56K bps Data Service Unit Revision Date Description Contents Service & Warranty Introduction About This Manual Introduction CSU/DSU Basics DescriptionDSU Functions CSU Functions Features Specifications Front & Back Panel Descriptions Front Panel Front Panel 2 RS232 Connector Power ConnectorLine Connector Back Panel Switch Settings Mode Position Description Switch Settings Shunts Shunts Unpacking & Setup Unpacking Telecom Safety Warnings Back Panel Connections Setup V.35 Shunt Diagnostics Loopback Test Loopback Test Diagram DSU Loopback Test Line Loopback Test DSU Back-to-Back Test DSU Back-to-Back Test Diagram Service & Warranty Multi-Tech Systems, Inc. Warranty & Repairs Policies Warranty2 U.S. and Canadian Customers International Distributors International Customers outside U.S.A. and Canada Repair Procedures for U.S. and Canadian Customers Repair Procedures for International CustomersRepairs Internet Site Technical Support Appendix Introduction Appendix a Application ExamplesLocal Area Data Set Application DDS Point-To-Point Application Figure A-3. DDS Multipoint Polled Application DDS Multipoint Polled Application RJ-48 Connector Appendix B Interface Signals and Connector Pinouts Pin Description Signal DB25S Connector Pin Description DB25S Connector with V.35 Interface Build Instructions Loopback Cable MTS P/N Back-To-Back Cable MTS P/N Figure B-7. Back-toBack Cable Connector FCC Regulations for Telephone Line Interconnection Appendix C Regulatory Information Canadian Limitations Notice S000327A