Dial Backup for Received Data Errors Application | Paradyne 3615

COMSPHERE DualFlow Data Service Units

Dial Backup for

Received Data Errors

Application

In this application, the router controls backup of one drop on the Frame Relay or DDS network. When the router detects data errors, it raises DTR on its secondary port (which is connected to the DSU's EIA-232-D/V.24 interface), and lowers DTR when the DDS line is restored. The DSU monitors the DTR lead on its EIA-232 interface; it initiates backup when DTR is raised and drops backup when DTR is lowered.

Automatic DDS line restoration is supported using this configuration as long as the router's secondary port is configured for backup when data errors are received, and there is a DualFlow DSU at both the control and tributary sites. Figure E-1 shows an example of this application.

Select the Synchronous Backup for either a control or tributary (SyBC or SyBT) configuration from the preset configurations provided by the Configuration (Confg) branch, depending upon which DSU you are configuring.

User data travels through the DSU's V.35 interface and backup data travels through the DSU's EIA-232-D/V.24 interface. The DSU's V.35 interface is connected to the router's primary or active serial port, while the EIA-232 interface is connected to the router's secondary serial port.

If your DualFlow DSU is equipped with a Switched 56 DBM, the DSU must be close to the router. The EIA-232 cable length cannot exceed 34 feet using shielded cable or 68 feet using unshielded cable if backup is to be supported.

Figure E-1. Dial Backup for Received Data Errors (SyBC and SyBT) Application

E-2

December 1996

3615-A2-GB20-20

Image 114

Paradyne 3615, 3616 manual Dial Backup for Received Data Errors Application

Contents

Comsphere Dualflow Data Service Units Warranty, Sales, and Service Information TrademarksCopyright 1996 Paradyne Corporation. All rights reserved Important Safety Instructions Government Requirements DDS Interface Data Rate Code Bps Table of Contents Glossary Index Model 3616 DSU Installation and Circuit Pack Lock List of Figures Wire Switched 56 DBM Technical Specifications List of Tables 1Model 3615 ± Digital DDS and 4-Wire Switched 56 kbps How to Use This Guide PrefaceAbout This Guide Related Documents Reference Documents Standard Features About Your DualFlow DSUOverview DBM Features DBMs Technical Specifications Switched 56 DBMs General Technical Specifications Specifications Criteria DSU Technical Specifications Application DBM Technical Specifications Criteria Modulation and Frequency Wire Switched 56 DBM Technical Specifications Criteria Equipment Warranty and Support Installing the Model DualFlow DSU Before You Begin How to Change Hardware Straps Procedure Permissive V.32 DBM transmit output level of ±9 dBm Where to Place the DSU Installing the DSU Connecting to the Network Power-Up Routine Connecting to the NMS Connecting to the Dial or Pstn Network Connecting to Switched 56 kbps Network Connecting to the DDS or Lads Network Lads Connection Distances Wire Gauge AWG KbpsNetwork Connection Data Rate Connecting the DSU to a Router Router Connection Verifying Operation and Testing Connections Addressing the UnitTributary DSU Addressing Verifying DBM Operation Verifying Network Addresses Verifying the Network Other Tests Installing the Model 3616 3 DualFlow DSU Before You Begin Installing the Model 3616 DualFlow DSU Model 3616 DSU Jumper Straps Strap State Function Designation Jumper Strap Comsphere 3000 Series Carrier, Rear View Model 3616 DSU Installation and Circuit Pack Lock V.35 Interconnect Cable Installation Connecting to the Dial or Pstn or Switched 56 kbps Network Connecting to DDS or Lads Network Addressing the Unit To Connect the Sdcp to a DSU CarrSlot 1 a Verifying Network Addresses, the Network, and DBM Operation Operating the DSU Assigning an Address DCP and Sdcp Operation Model 3615 DCP Sdcp and Model 3616 DSU Faceplate Keypad Menu StructureStatus Branch Top-Level Menu Expanded Health and Status Health and StatusDevice Health and Status Subnetwork Health and Status Identity Descriptions Circuit QualityIdentity Description Information Displayed Dial Backup Operation Backup BranchTerminal Power Configuring the Unit for Dial Backup Backup Branch Menu Selections Current Backup Effect Backup Mode CommandUnderstanding Operating Modes Abort Manual BackupTest Branch Device Test Digital Loopback Local LoopbackDTE Loopback Remote Digital Loopback Bilateral Loopback Digital TestEnd-to-End Test End-to-End Test Results Bit Error Rate TestBit Error Rate Test Results Information Displayed Results Reported By Information Displayed Configuration Branch Selecting an Application ConfigurationLamp Test Configuration Options Poll ListDisplaying the Poll List Changing the Poll List Directory Entry and Password Characters Use Acquiring the Poll ListDirectory Entering a Telephone Number Undo Phone Network AddressAssigning an Address LEDs Lead States SymbolControl Branch Transmitter Control Changing External Leads Message BranchDisplaying External Leads Reporting External Lead Changes to NMS Security Access Levels Security Functions Available Access LevelFront Panel DCP Security Unit Configuration DualFlow DSU cannot configure a non-DualFlow DSU remotely Using the DCP to Set Configuration Options Editing Configuration Options Saving Configuration Options Example Using the DCP Load from DiDg Activ Remot Configuration Option Tables Understanding the Tables DSU Configuration Options DSU Port Configuration Options Performs a Digital Loopback LL by DTE Disab Next Enab Disab Prev DBM Configuration OptionsDTR Alarm Disab Next Enab Disab Prev Bilat LpbkDisab Next Enab Disab Prev Auto RetrainYes Next Yes No Prev CarrLossDisc Yes Next Yes No PrevYes Single Rate No Next Yes No Prev None Call SetupNone Next None Pswrd Cllbk Alarm PrevAlarm Pswrd Wire EchoCancelDisab Next Enab Disab PrevRemot DBM4-wire Next 2-wire 4-wire Prev Primary CoreNo Next Yes No Prev DBM Port Configuration Options RespondRDL Disab Next Enab Disab Prev DSR FrcOn Enab Next Enab Disab PrevDSR on Tst Enab Next Enab Disab Prev RL by DTE Disab Next Enab Disab Prev Next Prev Stop Bits 1 for DiDg configurationCCN by EL Disab Next Enab Disab Prev Will not be displayed NonD Diagnostic DBM Configuration OptionsDiag Type Disr Next NonD Disr None Prev Disr Diagnostic General Configuration Options TribRemoteDiagEnhan Next V.54 Enhan Prev Backup Configuration Options TriesTimeOut15m Next Chang Prev RestorTimOut 5m Next Chang PrevMultiCallDisab Next Enab Disab Prev DSU Menu a DBM 9.6 C Local Remot Msg Comsphere DualFlow Data Service Units DSU Menu Local/Remote Menu Subbranches From Page A-1 Configuration Worksheets B Overview Instructions DualFlow DSU Configuration Worksheet 1 Date Location Local Phone No Device Local Addr Serial No DualFlow DSU Configuration Worksheet 2 DBM Port Value Status Indicators and C Control Panel Messages Overview Status Indicators DSU Status Indicators Table C-1Label Color Description Format Sdcp Status IndicatorsControl Panel Messages Health and Status Messages Device Health and Status Messages Message ConditionTable C-3 Table C-3 Device Health and Status Messages Condition Nn.n DDS Table C-4 Expanded Health and Status Messages Table C-5 Subnetwork Health and Status Messages Progress Messages Command Progress MessagesDial Backup Progress Messages Table C-7 Error Messages Table C-8 Command Error Messages Condition Action DBM DBM Network Connectors Pin Assignments D Hubbing Device Hubbing Device DC OUT DTE Connectors Ccitt Figure D-4. V.35 Interconnect Cable 3000-F1-510 Cable Pin NumberPlate Crossover Cables Figure D-5. EIA-232-D Crossover Cable 4951-035F Figure D-6. V.35 Crossover Cable 3211-178F Application Configurations E Dial Backup for Received Data Errors Application Dial Backup for Exceeded Load Thresholds Application Frame Relay Simultaneous Diagnostic Application Equipment Feature/Part No Comcode = Factory Install = Field InstallEquipment List F Comsphere 3000 Series Carrier, Installation Manual Equipment Part Number Model 3616 in U.S.A Auto backup Glossary DSR FEP RTS Series Network Index Index-2 Index DTR Index-5 Lads Index-7 Index-8 SDCP, C-3 Verifying