Paradyne 7510 DSU manual CSU or External Network Loopback

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Testing

CSU or External Network Loopback

CSU loopback is an external loopback that is located as closely as possible to the network interface.

"Procedure

To run a CSU loopback:

1.Position the cursor at the Start command next to CSU Loopback on the Network Tests screen.

2.Press Enter.

3.The Start command is changed to Stop. If you want to manually stop the test, verify that the cursor is positioned at the Stop command.

4.Press Enter. The duration of the test is displayed.

DTE Port

	DSU	CSU
DTE	Aggregate

Interface

DDS

Network

Port

CSU Loopback

496-15144

5-4

November 1997

7510-A2-GB20-10

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Contents Model 7510 DSU Copyright 1997 Paradyne Corporation All rights reserved Contents Monitoring the DSU Configuration Option Tables IndexAbout This Guide Document Purpose and Intended AudienceDocument Summary Product-Related Documents Model 7510 DSU Startup InstructionsModel 7510 DSU Features About the DSUTypical DSU Configurations FrameRouter Relay Network User Interfaces Rear Panel InterfacesModem TerminalUsing the Asynchronous Terminal Interface Connecting to the Terminal PortInitiating an ATI Session SelectMain Menu Status Test Configuration Control Load From Screen Format TypesWhat Affects Screen Displays Use the screen formatScreen Work Areas Menu PathNavigating the Screens Keyboard KeysPress Screen Function Keys For the screen Select Press Return to FunctionSwitching to the Screen Function Key Area ExampleEnding an ATI Session Customizing the DSU Identifying the Device and SystemMain Menu → Control → Device Name Device NameSaving Configuration Options If you select ThenConfiguring the DSU Configuration Option AreasAccessing and Displaying Configuration Options Configuration Option Area Configuration Option SetMonitoring the DSU What to MonitorViewing System and Test Status Main Menu → Status → System and Test StatusSystem and Test Status Health and Status SELF-TEST Results Health and Status HhhmmssSelf-Test Results Self-Test Results Messages What Message Indicates What To DoTest Status Messages Test Status Messages MeaningViewing Network Interface Status Main Menu → Status → Network Interface StatusViewing Network Performance Statistics Network Performance StatisticsAlarm Test DM OOS OOF NS TXD RXD RTS CTS DTR Monitoring the LEDsMain Menu → Status → Display LEDs Display Leds System NetworkAlarm System LEDsDM ± Data Mode OOS ± Out of ServiceNS ± No Signal Network LEDsPort LEDs Testing Accessing the Test MenuMain Menu → Test TestDevice Messages Loopback Type Initiated By Table A- 2, Network Interface OptionsRunning Network Tests Main Menu → Test → Network TestsNetwork Tests CSU or External Network Loopback DSU or Internal Network Loopback Send V.54 Up/Down SequencesTest Pattern for the Network Running Data Port Tests Main Menu → Test → Data Port TestsData Port Tests Local Loopback Test Pattern for the DTERunning the Lamp Test Main Menu → Test → Lamp TestEnding an Active Test Messages and Troubleshooting Messages and TroubleshootingResponding to Device Messages Device Messages 1 What Message Indicates What To DoDevice Messages 2 What Message Indicates What To Do Troubleshooting Troubleshooting 1 Symptom Possible Cause SolutionsResetting the DSU Troubleshooting 2 Symptom Possible Cause SolutionsMain Menu → Control → Reset Device Displaying DSU Identity InformationConfiguration Option Tables Select To Access To ConfigureOverview Status Load Edit/Display TestOperating Mode Lads Timing Possible Settings Internal, External, ReceiveSystem Options Menu Table A-1. System Options 1Test Timeout Table A-1. System Options 2Lads Line Rate Kbps Test Duration minNetwork Interface Options Menu Table A-2. Network Interface OptionsNetwork-initiated DSU Loopback 64K CC Data Scrambling 64K CCData Port Options Menu Table A-3. Data Port Options 1Invert Transmit Clock Bilateral LoopbackTable A-3. Data Port Options 2 Carrier Control by RTSRlsd Control Inactivity Timeout Terminal Port OptionsTable A-3. Data Port Options 3 Table A-4. Terminal Port Options 1Table A-4. Terminal Port Options 2 Disconnect TimeminutesConfiguration Worksheets Configuration Option SettingsWorksheets Network Interface Cables and Pin Assignments Terminal Port EIA-232 Connector Signal Direction Pin #User Data Port Connector SignalNumber Direction Pin Socket Connector Standard EIA-232-D Crossover Cable PinLAN Adapter Converter and Cable Modular RJ48S DDS Network Interface CableRJ48S DDS Network Interface Cable Functions Circuit Pin # Cable Plug to Modular Jack LAN AdapterTechnical Specifications Table D-1. Model 7510 DSU Technical Specifications 1Table D-1. Model 7510 DSU Technical Specifications 2 Network InterfaceNetwork Compatibility DTE Data Port InterfaceGlossary Factory defaults EIA-232Excessive BPV Frame relayReset MultiplexingNode Non-latchingIndex NumbersIN-2 IN-3