Line Loopback, Payload Loopback | Paradyne 7112 specification

Testing

Line Loopback

Line Loopback (LLB) loops the received signal on the network interface back to the network without change.

"Procedure

To run a Line loopback:

1.Position the cursor at the Start command next to Line Loopback on the Network Tests screen and press Enter.

2.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 and press Enter.

DSU CSU

LLB InterfaceNetwork

ALL 1s

DTE

496-15075

Line Loopback cannot be started when any of the following tests are already active:

Payload Loopback

Data Channel Loopback

Send Pattern test on the network interface.

Payload Loopback

Payload Loopback (PLB) loops the received signal on the network interface back to the network. Framing CRCs and BPVs are corrected.

"Procedure

To run a Payload loopback:

1.Position the cursor on the Start command next to Payload Loopback on the Network Tests screen and press Enter.

The Start command is changed to Stop.

7-4

March 1998

7112-A2-GB20-20

Image 62

Paradyne 7112 manual Line Loopback, Payload Loopback

Contents

Model 7112 T1 DSU/CSU Copyright 1998 Paradyne Corporation All rights reserved Contents Configuring the DSU/CSU Monitoring the DSU/CSU Messages and Troubleshooting MIB Descriptions Technical Specifications Glossary Index Document Summary About This GuideDocument Purpose and Intended Audience Product-Related Documents Model 7112 T1 DSU/CSU Features About the T1 DSU/CSU Typical DSU/CSU Configurations Typical Configuration through a T1 network Front Panel LED Status Indicators User Interface Types Management Information Base MIB Support Rear Panel Interface ConnectionsSnmp Management Capabilities Network Connecting to the Terminal Port Using the Ascii Terminal Interface ATIAccessing the ATI Initiating an ATI Session Select What Affects Screen Displays Screen Work AreasScreen Format Types Use the screen format Keyboard Keys Status Test Configuration ControlNavigating Press Procedure For the screen Select Press Enter to Function Switching Between Screen Work AreasScreen Function Keys Example Ending an ATI Session Using the Ascii Terminal Interface ATI Main Menu → Control → Device Configuring the DSU/CSUEntering Device and System Information Configuration Option Area Configuration Option Set Configuring the DSU/CSUConfiguration Option Areas Main Menu → Configuration Load Configuration From Accessing and Displaying Configuration OptionsSaving Configuration Options If you select Then Assigning DS0 Channels to the Data Port Cross Connect Assignments Using the Block or Acami Assignment Method Displaying DS0 Channel Assignments Using the Individual Channel Assignment Method Clearing DS0 Channel Assignments Security Overview On the Administer Enter Logins screen, for Creating a LoginMain Menu → Control → Administer Logins Deleting a Login Resetting the DSU/CSUs COM Port or Factory Defaults ATI Access If entering yes to prompt Then Effective Access Level Effective Access Levels ATI Access to Menu Functions Connection Failed Controlling Snmp AccessAssigning Snmp Community Names and Access Levels Limiting Snmp Access through the IP Addresses Security IP Addressing IP Addressing Subnet IP Addressing ExamplesLocal Addressing Only No FDL FDL Connection ± Extending Subnet for FDL NMS a NMS B FDL Connection ± Unique FDL Subnet LAN a If using Then assign Assigning IP Addresses and Subnet Masks IP Addressing Monitoring the DSU/CSU What to Monitor DSU/CSU LEDs Main Menu → Status → Display LEDs System LEDs Fail EER ± Excessive Error Rate SIG ± Network SignalAlarm Network LEDs Port LEDs Main Menu → Status → System and Test Status Status Screen CommandsSystem and Test Status Health and Status Messages Yyyyyyyy Self-Test Results Xxxxxxxx Test Status Messages Test Status Messages Meaning Network Time Slot Fields top Indicate Cross Connect StatusMain Menu → Status → Cross Connect Status Network Performance Statistics Main Menu → Status → Network Performance Statistics Summary Information Interval Table Worst Interval Main Menu → Status → Ethernet Port Status Ethernet Port StatusHour Totals Management Protocol Statistics Main Menu → Status → Management Protocol Statistics March Status Specific Trap Screen TestingDetecting Problems Accessing the Test Menu Main Menu → Test Running Network Tests Main Menu → Test → Network Tests Line Loopback Payload Loopback Repeater Loopback Remote Send Line Loopback Test Patterns for the Network Running Data Port Tests Main Menu → Test → Data Port Tests Data Terminal Loopback CSU DSU Data Channel Loopback Send V.54 Up/Down Sequences Send FT1 Up/Down Sequences Test Patterns for the DTE Lamp Test Ending an Active Test Snmp Traps Messages and TroubleshootingConfiguring Snmp Traps Device Messages Device Messages 1 What Message Indicates What To Do Device Messages 2 What Message Indicates What To Do Troubleshooting Troubleshooting 1 Symptom Possible Cause Solutions Troubleshooting 2 Symptom Possible Cause Solutions Messages and Troubleshooting Configuration Option Tables Select To Access To Configure Table A-1. System Options Test TimeoutSystem Options Menu Self Test Line Framing Format Network Interface Options MenuTable A-2. Network Interface Options 1 Line Coding Format Table A-2. Network Interface Options 2 Bit Stuffing Possible Settings 62411, Part68, DisableLine Build Out LBO Possible Settings 0.0, ±7.5, ±15, ±22.5 FDL Management Link Network Initiated Payload Loopback PLB Table A-2. Network Interface Options 3Network Initiated Line Loopback LLB Circuit Identifier Table A-2. Network Interface Options 4Ansi Performance Report Messages Table A-3. Cross Connect Assignments Assign By Available Settings Block, ACAMI, ChannelCross Connect Assignments Synchronous Data Port Assignments Port Base Rate Data Port Options MenuTable A-4. Data Port Options 1 Invert Transmit Clock Invert Transmit and Received Data Action on Network Yellow AlarmTable A-4. Data Port Options 2 Table A-4. Data Port Options 3 Table A-5. Ethernet Port Options 1 Port Use Possible Settings 802.3, Version 2, DisableEthernet Port Options Menu Table A-6. Terminal Port Options 1 Terminal Port OptionsTable A-5. Ethernet Port Options 2 Character Length Table A-6. Terminal Port Options 2 Login RequiredPort Access Level Possible Settings Level 1, Level 2, Level Stop Bits Table A-7. Telnet Session Options 1 Telnet Session OptionsTable A-6. Terminal Port Options 3 Table A-7. Telnet Session Options 2 Table A-8. General Snmp Management Options 1 Snmp MenuGeneral Snmp Management Options Table A-8. General Snmp Management Options 2 Name 2 AccessSnmp NMS Security Options Table A-9. Snmp NMS Security Options 1 Access Level Table A-9. Snmp NMS Security Options 2 Snmp Traps Snmp Traps OptionsTable A-10. Snmp Traps Options 1 Number of Trap Managers Enterprise Specific Traps Link Traps Possible Settings Disable, Up, Down, BothTable A-10. Snmp Traps Options 2 Link Trap Interfaces Enable, Disable Configuration WorksheetsConfiguration Option Settings default in Bold Worksheets Blank Disable, EnableESF, D4 Nx64, Nx56 Internal, External Configuration Option Settings Ethernet Port Snmp Snmp NMS Security Worksheets MIB Descriptions MIB II ± RFC 1213 and RFC SysName system System GroupSysDescr system Datalink/subnetwork Interfaces GroupPhysical 1 ± Layer Internet 4 ± Layer Version Hardware Revision º EthernetCsmacd6 ± Used for Up1 IfInOctets ifEntry Testing3 stateIfInErrors ifEntry IfXEntry Extension to Interface Table ifXTableIfName ifXEntry IfStackEntry2 Interface Stack GroupIfStackEntry1 IP Group Interface Test TableGeneric Receive Address Table Be specified InvalidExist. The following objects must On next UDP Group Icmp GroupTCP Group Do not specify the following Table C-6. Transmission Group Objects Description Snmp GroupTransmission Group Transmission DS1/E1 ± RFC DS1 Near End Group Configuration Table ObjectsDsx1ConfigEntry Dsx1ESF2 ± Indicates Dsx1AMI5 ± Indicates Dsx1SendResetCode4 ±Dsx1B8ZS2 ± Indicates Dsx1SendNoCode1 ± Dsx1NoLoop1 ± The T1 Dsx1NoAlarm1 ± NoDsx1LossOfSignal64 ± Dsx1PayloadLoop2 ± ThroughTiming3 ± LoopTiming1 ±LocalTiming2 ± Dsx1other1 ± Snmp DS1 Near End Group Current Table Objects Dsx1CurrentEntry Dsx1IntervalEntry10 DS1 Near End Group Interval Table ObjectsDsx1IntervalEntry DS1 Near End Group Total Table Objects Dsx1TotalEntry DS1 Fractional Group Ethernet-Like MIB ± RFCRS-232-Like MIB ± RFC Number of RS-232-Like Ports Object Rs232PortEntry Rs232AsyncPortEntry Disabled2 ± Does notAsynchronous Port Table Objects Synchronous Port Table Objects Rs232SyncPortEntry Input Signal Table Objects Rs232InSigEntry Output Signal Table Objects Rs232OutSigEntry IfExtnsTestEntry Generic Interface Extension MIB ± RFCGeneric Interface Test Table Objects TestMon Qrss wellKnownTests ± Starts a Monitor 511 test on the interface InProgress3 ± Test is InSyncNoBitErrorsInSyncWithBitErrors NotSupported4 ± Requested Device Security, pdn-security pdn-common Device Configuration Variable pdn-commonEnterprise MIB Object Device Traps, pdn-traps pdn-common MIB Descriptions Trap authentificationFailure Standards Compliance for Snmp TrapsTrap warmStart Snmp Trap Description Possible Cause Traps linkUp and linkDown Interface LinkUp/Down Variable-Bindings Possible Cause Traps enterpriseSpecific Trap What It Indicates Possible CausePage Standards Compliance for Snmp Traps Cables and Pin Assignments Cabling Overview Modular RJ48C-to-RJ48C T1 Network Interface Cable Modular RJ48C-to-CA81A T1 Network Interface Cable Signal Direction Pin # Terminal Port EIA-232 Connector10BaseT Connector Use Pin # Serial Crossover Cable Pin Direction Pin Socket Connector DTE V.35 ConnectorSignal Cables and Pin Assignments Technical Specifications Model 7112 DSU/CSU Technical Specifications 1 Model 7112 DSU/CSU Technical Specifications 2 Glossary Digital signal Configuration optionDefault Channel allocation Enterprise MIB Factory defaultsEIA-232 Enterprise-specific Manager Snmp ResetLoopback Multiplexing Subnet RS-232Self-test Subnet address Pattern Yellow AlarmIn-8 pattern Index Numbers IN-2 IN-3 IN-4