Multi-Tech Systems MT56DSU-S manual Service & Warranty

Page 4

Chapter 5 - Service & Warranty			23
5.1	Multi-Tech Systems, Inc. Warranty & Repairs Policies		24
	5.1.1	Warranty	24
	5.1.2 U.S. and Canadian Customers		24
	5.1.3 International Customers (outside U.S.A. and Canada)		25
	5.1.4	International Distributors	25
5.2	Repairs		26
	5.2.1 Repair Procedures for U.S. and Canadian Customers		26
	5.2.2 Repair Procedures for International Customers		26
	5.2.3 Repair Procedures for International Distributors		27
	5.2.4	Replacement Parts	27
5.3	Technical Support		27
5.4	Internet Site		27

Appendix	28
Appendix A - Application Examples	29
Introduction	29
Local Area Data Set Application	29
DDS Point-To-Point Application	29
DDS Multipoint (Polled) Application	30
Appendix B - Interface Signals and Connector Pinouts	31
RJ-48 Connector	31
DB25S Connector	32
DB25S Connector with V.35 Interface	33
Loopback Cable (MTS P/N 45640100)	34
Back-To-Back Cable (MTS P/N 45050000)	35
Appendix C - Regulatory Information	36
FCC Regulations for Telephone Line Interconnection	36
Canadian Limitations Notice	37

Image 4

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 Warranty Multi-Tech Systems, Inc. Warranty & Repairs Policies2 U.S. and Canadian Customers International Customers outside U.S.A. and Canada International DistributorsRepair Procedures for International Customers Repair Procedures for U.S. and Canadian CustomersRepairs 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