Paradyne 7510 DSU manual Multiplexing, Node, Non-latching, Point-to-point circuit, Protocol, Reset

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Glossary

multiplexing

A method for interleaving several access channels onto a single circuit for transmission

 

over the network.

node

A connection or switching point on the network.

non-latching

A non-latching loopback can only be initiated or terminated by the 56 kbps network service

loopback

provider.

NS

No Signal. A network-reported condition.

OOF

Out Of Frame. An error condition in which frame synchronization bits are in error. A

 

network-reported condition.

OOS

Out of Service. A digital network trouble signal.

PAD

Packet Assembler/Disassembler.

point-to-point circuit

A data network circuit with one control and one tributary device.

protocol

The rules that govern how devices exchange information on a network. It covers timing,

 

format, error control, and flow control during data transmission.

PSTN

Public Switched Telephone Network. A network shared among many users who can use

 

telephones to establish connections between two points.

reset

A reinitialization of the device that occurs at power-up or in response to a reset command.

RIP

Routing Information Protocol. Specifies the routing protocol used between DSUs.

RLSD

Receive Line Signal Detect. See CD.

router

A device that makes decisions about the paths network traffic should take and forwards

 

that traffic to its destination. A router helps achieve interoperability and connectivity

 

between different vendor's equipment, regardless of protocols used.

RS-232

An EIA standard for the 25-pin DCE/DTE interface. Same as EIA-232.

RTS

Request to Send. An EIA-lead standard for V.24 circuit CT 105; an input signal

 

(DTE-to-DCE).

RXC

Received Clock. An EIA-lead standard for V.24 circuit CT 115; an output signal

 

(DCE-to-DTE).

RXD

Received Data. An EIA-lead standard for V.24 circuit CT 104; an output signal

 

(DCE-to-DTE).

SDLC

Synchronous Data Link Control. A standard data link protocol.

synchronous

Data transmission that is synchronized by timing signals. Characters are sent at a fixed

 

rate.

TDM

Time Division Multiplexer. A device that enables the simultaneous transmission of multiple

 

independent data streams into a single high-speed data stream.

TM

Test Mode. An EIA-lead standard for V.24 circuit CT 142; an output signal (DCE-to-DTE).

TXC

Transmit Clock. An EIA-lead standard for V.24 circuit CT 114; an output signal

 

(DCE-to-DTE).

TXD

Transmit Data. An EIA-lead standard for V.24 circuit CT 103; an input signal

 

(DTE-to-DCE).

V.35

ITU-T standard for a high-speed, 34-pin, DCE/DTE interface.

WAN

Wide Area Network. A network that operates over long distances and spans a relatively

 

large geographic area (e.g., a country).

7510-A2-GB20-10

November 1997

GL-3

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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 Modem User InterfacesRear Panel Interfaces TerminalUsing the Asynchronous Terminal Interface Connecting to the Terminal PortInitiating an ATI Session SelectMain Menu What Affects Screen Displays Status Test Configuration Control Load FromScreen Format Types 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 Main Menu → Control → Device Name Customizing the DSUIdentifying the Device and System Device NameSaving Configuration Options If you select ThenAccessing and Displaying Configuration Options Configuring the DSUConfiguration Option Areas 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 StatisticsMain Menu → Status → Display LEDs Alarm Test DM OOS OOF NS TXD RXD RTS CTS DTRMonitoring the LEDs Display Leds System NetworkAlarm System LEDsNS ± No Signal DM ± Data ModeOOS ± Out of Service Network LEDsPort LEDs Main Menu → Test TestingAccessing the Test Menu 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 Responding to Device Messages Messages and TroubleshootingMessages and Troubleshooting Device Messages 1 What Message Indicates What To DoDevice Messages 2 What Message Indicates What To Do Troubleshooting Troubleshooting 1 Symptom Possible Cause SolutionsMain Menu → Control → Reset Device Resetting the DSUTroubleshooting 2 Symptom Possible Cause Solutions Displaying DSU Identity InformationOverview Configuration Option TablesSelect To Access To Configure Status Load Edit/Display TestSystem Options Menu Operating ModeLads Timing Possible Settings Internal, External, Receive Table A-1. System Options 1Lads Line Rate Kbps Test TimeoutTable A-1. System Options 2 Test Duration minNetwork-initiated DSU Loopback 64K CC Network Interface Options MenuTable A-2. Network Interface Options Data Scrambling 64K CCInvert Transmit Clock Data Port Options MenuTable A-3. Data Port Options 1 Bilateral LoopbackTable A-3. Data Port Options 2 Carrier Control by RTSRlsd Control Table A-3. Data Port Options 3 Inactivity TimeoutTerminal Port Options 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 PinRJ48S DDS Network Interface Cable Functions Circuit Pin # LAN Adapter Converter and CableModular RJ48S DDS Network Interface Cable Cable Plug to Modular Jack LAN AdapterTechnical Specifications Table D-1. Model 7510 DSU Technical Specifications 1Network Compatibility Table D-1. Model 7510 DSU Technical Specifications 2Network Interface DTE Data Port InterfaceGlossary Excessive BPV Factory defaultsEIA-232 Frame relayNode ResetMultiplexing Non-latchingIndex NumbersIN-2 IN-3