ADTRAN T1-FT1 user manual Network Loopbacks, Tsu

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Chapter 1. Introduction

Network Loopbacks

There are two types of network loopbacks; see Figure 1-7.

•Line Loopback: loops all of the received data back toward the network. The transmitted data is the identical line code that was received, including any bipolar violations or framing errors.

•Payload Loopback: similar to Line loopback, except that the framing is extracted from the received data and then regenerated for the transmitted data.

TSU

NI CSU

DS1

Payload Loopback

Line Loopback

V.35

Interface

Figure 1-7. Network Loopback Tests

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TSU User Manual

61200060L1-1

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Contents T1-FT1 Data/Channel Service Unit Part Number 1200060L1Page Iii Service REN/SOC FIC UsocPage Important Safety Instructions Warranty and Customer Service Viii Table of Contents Operation Index Index-1 Table of Contents Xii Figure A-1 TSU Complete Menu Diagram List of FiguresList of Figures List of Tables List of Tables Introduction T1 Service OfferingsT1/FT1 Overview Fractional T1 TSU Overview Functional DescriptionTest Jacks FunctionControl Features InterfacesNetwork Interface Nx56/64 Serial InterfaceControl Port Input Chain Por t OutputThree Methods of Control Front PanelAdtran PC Program SnmpTSU Clock Sources Network TimedDTE Timed DTE Clock SourceInternal Timing Internal Clock SourceSelf Tests TSU TestingLoopback Tests Network Loopbacks TSUDTE Interface Loopbacks All OnesApplication 511Installation UNPACK, INSPECT, Power ConnectionPower Connection Adtran Shipments IncludeWiring NetworkNetwork Pin Connection PIN Name DescriptionControl In/Chain In Pin Connection Control In/ChainControl PIN Connection Name Description Chain Out Pin Connection Chain OutChain OUT PIN Connection Nx56k/64k DTE Primary V.35 Pin ConnectionNx 56k/64/ DTE PIN Connection PIN Ccitt DescriptionPower UP Testing and Initialization Self TestOperation Methods of OperationCancel Front Panel OperationALM LCD WindowT a T U S General Menu OperationO N F I G E T W O R K N N I T Setting the Data FieldCode Z S Viewing Display Only Data Fields To Exit Any Menu Field Operation or DisplayMenu Structure Four Opening MenusFour Opening Menu Functions Fact Restore UtilTIME/DATE Software VersionMenu Operation Status Menu1RESET Perf Cntrs NI Perf RPTS, Submenu of 1Status15MIN / 24HR Minutes HoursData Values State Active/Inactive Alarm InvestigatedCurr ERR/ALM Submenu of 1Status Clear History ERR/ALM Hist Submenu of 1StatusConfiguration Complete Configuration MenuNetwork NI Submenu of 2 Config O R M a T Code Z SXmit PRM UNIT, Submenu of 2 Config O N T R O L P O R T Alarm SCntrl Port Alarms Data RatePORT, Submenu of Config Rate 56/64Normal Mode of Operation # of ChanUtil 1Time/Date, Submenu of 3UtilM E 0 5 0 7 0 T E 0 8 / 0 5 / 9 Keystroke Summary for Editing Time/Date2Software Rev, Submenu of 3Util 3Reinit Unit, Submenu of 3UtilE I N I T D D R E S S 0 0 5Fact Restore, Submenu of 3Util4Address,Submenu of 3Util Test Complete Test Menu1Network Tests, Submenu of 4Test Loopback or 3PATTERN R 5 1 1 Error S 5 1 1 Error S = 5 2Run Selftest, Submenu of 4TestT E L O O P B C K O F F S T E M S E L F T E S T3Port Tests submenu of 4Test Operation Testing Example Far End Looped Back TestN I T O R 3 U T I L Network Interface TestE T W O R K T E S T S U N S E L F T E S T Press Enter to activate a Remote Payload Loopback Testing Example Figure A-1. TSU Complete Menu Diagram Appendix a TSU Complete MenuAppendix A. TSU Complete Menu DTE Data Rate vs DS0s N # of DS0s N Appendix B DTE Data Rate ChartDTE Rate = 56K Appendix B. DTE Data Rate Chart Index NumericsIndex Post-Sale Support Presales Inquiries and Applications SupportRepair and Return