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Multi-Tech Systems DT102, DT101 7.12Diagnostic Testing, 12. Diagnostic Testing, Troubleshooting

Models: DT102 DT101 DT102/xx DT101/xx

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7.12Diagnostic Testing

Chapter 7 - Troubleshooting

7.12Diagnostic Testing

Table 7-12. Diagnostic Testing

Step Procedure

1Toggle DIP switch position 3 to the down (closed) position to enable the command port.

2Connect a terminal or PC running communications software to the DATA/COMMAND connector on the back panel of the DataTalker.

Note: Any cables connected to the computer should be shielded to reduce interference.

3Apply power to the DataTalker.

4Apply power to the terminal or PC. Run the PC’s communications software in terminal mode and press ENTER twice to establish communications with the DataTalker. The Main Menu appears:

Main Menu

1 - Configurations

2 - Statistics

3 - Reset Options

4 - Diagnostics

5 - Exit Command Mode

6 - QUICK SETUP

Selection : _

5 Enter 4 and press ENTER. The Diagnostics menu is displayed:

Diagnostics

1 - Loop Test

2 - Memory Test

3 - Watch Dog Test

4 - Dip Switch Definitions and Settings

5 - Product and Firmware ID

M - Main Menu

P - Previous Menu

Selection : _

6Select the test you wish to run by entering its option number and pressing ENTER. If you select Loop Test, the Loop Test menu will appear.

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Multi-Tech Systems DT102, DT101/xx 7.12Diagnostic Testing, 12. Diagnostic Testing, Troubleshooting, Step Procedure

Contents

Desktop Models DT101, DT102, DT101/xx, DT102/xx Data/Voice/Fax ConcentratorRack-Mount Models DT101R, DT102R, DT101R/xx, DT102R/xx Owner’s ManualRecord of Revisions DataTalker SeriesPatents TrademarksChapter 1 - Introduction and Description Chapter 2 - ConfigurationChapter 3 - Front and Rear Panel Descriptions ContentsChapter 5 - Installation Chapter 4 - Unpacking and ConfigurationChapter 7 - Troubleshooting Chapter 8 - Warranty, Service and Tech SupportGlossary AppendixesIndex Appendix A - ASCII Conversion ChartPage Chapter 1 - Introduction and Description 1.1 Introduction Chapter 2 - Configuration Examples1.2 About This Manual Chapter 1 - IntroductionChapter 5 - Installation Chapter 4 - Unpacking and ConfigurationChapter 7 - Troubleshooting Chapter 8 - Service, Warranty and Tech Support+++ATCR 1.3 Product DescriptionFigure 1-2. Block Diagram DataTalker Owner’s ManualChapter 1 - Introduction and Description communications software to the DATA/COMMAND connector on the back panel and configure the data channel for the type of data that is going to be transferred. For example, if an asynchronous device is going to be connected to the data channel, you must set the speed of the channel, the word length, the number of stop bits, whether or not you are going to have parity checking, the flow control type, and other aspects of asynchronous data. After you have configured the data channel, remove the command port device and connect the data channel device, allowing data to be transferred from the asynchronous device to the MultiMux’s input/ output circuitry1.4.1 Voice/Fax 1.4 System Features1.4.2 Data Channel 1.4.3 Composite Link1.4.7 Operational Statistics 1.4.6 DiagnosticsChapter 1 - Introduction and Description DataTalker Owner’s Manual 1.5 FCC Regulations for Telephone Line InterconnectionChapter 1 - Introduction and Description 1.6 Canadian Limitations Notice1.7.3 System Control Command Port 1.7 Specifications1.7.1 Async Data Channel 1.7.2 Sync Data Channel1.7.6 Internal DSU 1.7.5 Internal Modem1.7.7 ISDN Terminal Adapter 1.7.8 Voice/Fax ChannelDesktop Models 1.7.9 Electrical/PhysicalRack-mount Models DataTalker Owner’s ManualChapter 2 - Configuration Valid Voice/Fax Configurations DataTalker ConfigurationsConfiguration 2.1 IntroductionChapter 2 - Configuration 2.2 Configuration 1 - Dial-Up LinkHome Office DataTalker Owner’s Manual To configure the DataTalker, enter 1 and press ENTERChapter 2 - Configuration AT$D1 CR AT&W CR Q CRATDTNumber to DialN0 CR DataTalker Owner’s Manual To connect the home office DataTalker to its PC, connect an RS232C cable between the DATA/ COMMAND connector on the DataTalker and an async port on the PC typically, COM1 or COM2. Place DIP switch position 3 on the side of the DataTalker in the OPEN up position to enable the data channelChapter 2 - Configuration 2.3 Configuration 2 - MMH900 Series with Voice/FaxFigure 2-2. Adding Voice to Data-Only Network Async DataTalker Owner’s Manual19200 EchoComposite Link Settings - Internal DSU Chapter 2 - ConfigurationConfigurations SpeedFigure 2-3. LAN to LAN Configuration 2.4 Configuration 3 - LAN to LANDataTalker Owner’s Manual Chapter 2 - Configuration ENTER DataTalker Owner’s ManualThe DataTalker knows the type of link device being used by the way a DIP switch is set or by detecting a device installed on the main PC board. In this configuration, a 56K bps internal DSU is used for the composite link device, so when the Composite Link Settings menu is displayed, it is for a DSU Chapter 2 - ConfigurationRemote Site 2.5 Configuration 4 - PBX to PBXLocal Site Figure 2-4. PBX to PBX ConfigurationChapter 2 - Configuration The terminal adapter menu displays the transmit rate and option 2 allows you to configure the terminal adapter. Use option 2 Configure TA to access the terminal adapter’s built-in configuration menus refer to the ISDN Terminal Adapter Owner’s Manual for details. The Flush Time option is used only with an Alpha microcomputer or Wyse terminal. Enter S and press ENTER to store all configurations Chapter 3 - Front and Rear Panel Descriptions Table 3-1. LED Indicators 3.2 IndicatorsData/Command Indicators 3.1 IntroductionComposite Link Status Chapter 3 - Front and Rear Panel Descriptions Voice/Fax Channels28.8/56 28.8K bps/56K bps This composite link speed indicator displays the baud rate of the internal modem 28.8 or DSU 56K. The type of composite link device is indicated by which of the EXT, MDM, DSU, or TA indicators lights 3.3.1 Frame Ground Connector GND 3.3 Connectors3.3.2 POWER Connector 3.3.3 DATA/COMMAND Connector3.3.8 DSU/TA DIGITAL Connector 3.3.7 VOICE/FAX CHANNEL 1 E&M Connector3.3.9 MODEM LEASED Connector 3.3.10 MODEM DIAL-UP Connector3.4.1 Front Panel Switches 3.4 Switches and Shunts3.4.2 Power Switch Chapter 3 - Front and Rear Panel Descriptions3.4.4 RS232C/V.35 Shunt 3.4.3 DIP SwitchPosition DataTalker Owner’s ManualChapter 4 - Unpacking and Configuration 4.2 Unpacking 4.1 IntroductionDataTalker Owner’s Manual Figure 4-1. Unpacking4.4 Data Port Configuration Considerations 4.3 Configuration SummaryChapter 4 - Unpacking and Configuration ConnectorDataTalker Owner’s Manual 4.5 Voice/Fax Channel Configuration ConsiderationsChapter 4 - Unpacking and Configuration 4.6 Composite Link Configuration ConsiderationsTable 4-1. Configuration Procedure 4.7 Configuration ProcedureDataTalker Owner’s Manual 6 Apply power to the terminal or PC. Run your PC communications software in terminal mode. Press the ENTER key twice to establish communications with the DataTalker the Main Menu then appears Chapter 4 - Unpacking and ConfigurationDataTalker Owner’s Manual Voice/Fax Channel ConfigurationData Port Async/Sync 1 - Async 2 - Sync P - Previous Menu Selection Chapter 4 - Unpacking and Configuration Composite Link ConfigurationAccept the defaults for the first five options DataTalker Owner’s Manual ATDTNumber Modem to DialN0 AT$D1 - DTR Dialing commandChapter 4 - Unpacking and Configuration DataTalker Owner’s Manual Chapter 5 - Installation Step Procedure Composite Link Table 5-1. Cabling ProcedureDIP Switch 5.1 IntroductionFigure 5-3. Leased Line Connection DSU Chapter 5 - Installation MMH2834 Modem, Leased LineISDN Terminal Adapter Figure 5-4. DSU Line ConnectionData Channel External Modem, DSU, or ISDN Terminal AdapterVoice/Fax Channel DataTalker Owner’s ManualFigure 5-9. PBX Connection Chapter 5 - InstallationFigure 5-10. PBX E&M Trunk Connection Step Procedure Table 5-2. V.35 Shunt Procedure5.3 V.35 Shunt DataTalker Owner’s ManualTable 5-3. Power-On and Checkout Procedure 5.4 Power-On and CheckoutComposite Link Device Chapter 5 - InstallationComposite Link Composite link Data channel Voice/fax channelData Channel Chapter 5 - Installation Voice/Fax Channel Page Chapter 6 - Menus 6.1 Introduction 6.2 Configurations MenuChapter 6 - Menus 6.2.1 Data Port ConfigurationDataTalker A IN IN IN OUT OUT UT DataTalker Owner’s ManualComposite Link Facility DataTalker B 8 OUT 6 OUT 22 OUT 4 IN 20 IN 25 INChapter 6 - Menus 6.2.2 Sync Data Port ConfigurationVoice/Fax Channel 1 Configuration 6.2.3 Voice/Fax Channel ConfigurationDataTalker Owner’s Manual Remote LocalConfiguration ConfigurationPage Composite Link Settings - Internal MMH2834 6.2.4 Composite Link ConfigurationChapter 6 - Menus x - Enter the number of seconds0 is off P - Previous Menu SelectionComposite Link Settings - Internal TA Composite Link Settings - Internal 56K DSUChapter 6 - Menus Selection The Disconnect on Inactivity DOI Timer option signals the terminal adapter to hang up the composite link by dropping DTR to it when the timer expires. When the DOI Timer option is selected, a submenu is displayed in which you can enter the number of minutes that the inactivity timer is set for. The range of the timer in minutes is 01 to 99. The default setting for the timer is three minutesSelection DataTalker Owner’s ManualChapter 6 - Menus Composite Link Settings - External Devicex - Enter the number of minutes P - Previous Menu x - Enter the number of seconds0 is off P - Previous Menu6.3 Statistics 6.5 Diagnostic Tests 6.4 Reset OptionsReset Options 1 - Reset Unit 2 - Reset Data and Voice/Fax Channels 3 - Reset Voice/Fax Channel 4 - Reset Voice/Fax ChannelVoice Loopback Test 6.5.1 Loop TestsInternal DSU Test External Device Test6.6.1 MMV8/16/32 Configuration Options 6.6 Configure Remote UnitChapter 6 - Menus Warning The memory test will destroy all stored configurtions 6.6.2 Quick SetupWill this unit be installed at the main office? Y/N/Q DataTalker Owner’s ManualMMH2834 Modem Dial-up Table 6-1. Main Office InstallationMMH2834 Modem Leased Line Digital DSUDataTalker Owner’s Manual Configuration and installation is completeStep Procedure Table 6-2. Home Office InstallationChapter 6 - Menus MMH2834 Modem Dial-upPOWER DATA/COMMAND Connector RS232 CableDataTalker Owner’s Manual Chapter 7 - Troubleshooting 7.2 Importance of the Composite Link Statistics Report 7.1 IntroductionReceive Block Errors Link Alarms7.3 Test Cables Chapter 7 - TroubleshootingDataTalker Owner’s Manual 7.4 Troubleshooting GuideData Channel Voice/Fax ChannelTable 7-2. Composite Link Troubleshooting Internal DSU Table 7-1. Command Port TroubleshootingProblem Command port device notFlashing RXT LED Problem Composite link down with CD, CTS, XMT, RD and RCV LEDs onTable 7-2. Composite Link Troubleshooting Internal DSU SolutionInternal ISDN Terminal Adapter Problem Composite link down with CTS, XMT and RD LEDs onComposite link down with CD, CTS, XMT, RCV and RD LEDs on Chapter 7 - TroubleshootingInternal MMH2834 Modem Problem Composite link down with CTS, XMT, and RD LEDs onSolution DataTalker Owner’s ManualExternal Composite Link Device SolutionsFlashing RXT LED Composite link down with CD, CTS and RD LEDs on Chapter 7 - TroubleshootingProblemPossible CausesSolution Table 7-3 Data Channel TroubleshootingAsync Data Channel Sync Data ChannelVolume levels not sufficient on local voice/fax channel Table 7-4. Voice/Fax TroubleshootingData throughput slows excessively when voice/fax channel is active FXO to FXO configuration - local telephone does not ringNo communication on voice/fax channel Table 7-4. Voice/Fax Troubleshooting continuedProblem SolutionTable 7-5. Composite Link Settings - Internal DSU 7.5 Composite Link Settings - Internal DSUChapter 7 - Troubleshooting Step ProcedureTable 7-6. Composite Link Settings - Internal ISDN Terminal Adapter 7.6 Composite Link Settings - Internal ISDN Terminal AdapterStep Procedure Table 7-7. Composite Link Settings - Internal MMH2834 7.7 Composite Link Settings - Internal ModemStepProcedure Chapter 7 - TroubleshootingTable 7-8. Composite Link Settings - External Device 7.8 Composite Link Settings - External DeviceStep Procedure DataTalker Owner’s ManualTable 7-9. Composite Link Statistics 7.9 Composite Link StatisticsChapter 7 - Troubleshooting Step ProcedurePage Table 7-10. Data Port Configuration 7.10Data Port ConfigurationChapter 7 - Troubleshooting Step ProcedureDataTalker Owner’s Manual Data Port ConfigurationTable 7-11. Voice/Fax Channel Configuration 7.11 Voice/Fax Channel ConfigurationChapter 7 - Troubleshooting Step ProcedureDataTalker Owner’s Manual Table 7-12. Diagnostic Testing 7.12Diagnostic TestingChapter 7 - Troubleshooting Step ProcedureDataTalker Owner’s Manual Chapter 8 - Warranty, Service and Tech Support 8.2.1 On-line Warranty Registration 8.2 Limited Warranty8.1 Introduction DataTalker Owner’s ManualChapter 8 - Warranty, Service and Tech Support 8.3.2 ServiceATTN SERVICE OR REPAIRS 8.3 Tech SupportTo log on to the Multi-Tech BBS 8.4 The Multi-Tech BBSTo Download a file If you know the file nameChapter 8 - Warranty, Service and Tech Support 8.5 About the Internetftp//ftp.multitech.com DataTalker Owner’s Manual Appendixes CTRL CODE HEX DEC Appendix A - ASCII Conversion ChartCODE HEX CODEAppendix B - RS-232C Interface Specification Appendix B - RS-232C Interface SpecificationSIGNAL INFORMATION SIGNALChannel Cables Appendix C - Cabling DiagramsTo DCE Device Composite Link Cabling Appendix C - Cabling DiagramsRS232C/V.24 Configured Composite Link V.35 Adapter Cable Configured on a RS232C/V.35 Composite LinkDataTalker Owner’s Manual 1 2 3 4 5 6 71 2 3 4 5 6 7 RJ-48 Cable for Internal DSUWire Voice/Fax Channel ConnectorsE&M Voice/Fax Channel Cable DSU Back-to-Back CableDataTalker Owner’s Manual Appendix D - Flow Control BackgroundDATATALKER-INITIATED FLOW CONTROL CHANNEL DEVICE INITIATED PACINGIntroduction Appendix E - MMH2834 Modem S-RegistersS0 Number of Rings Until Modem Answers S6 Wait Time for Dial ToneS19 Dial-Back Timer S13 Remote Configuration Escape CharacterS11 Tone Dialing Tone Spacing and Duration S18 Automatic Leased Line RestoralMMH2834 Command Summary Appendix F - MMH2834 Modem Commands F.1 IntroductionAppendix F - MMH2834 Modem Commands TYPE COMMANDDESCRIPTION Negotiate V42 Mode During HandshakeDial Command F.2 Dialing Action CommandsContinuous Redial A orPulse or Tone Dial P F.3 Dial Modifier CommandsSet Pulse Dial Ratios &P Automatic Pauses in DialingReverse the Mode of Operation R Wait for New DialtoneFlash On Hook “Calling Card” Detect TonesStoring Phone Numbers F.4 Phone Number Memory CommandsD...N Number LinkingStore Configuration & S-Register Params. in Non-Volitile Memory &W F.5 Configuration and Default Storage CommandsLoading Factory Defaults &F Modem ResetEcho Command Mode Characters F.6 Command Response Result Code CommandsResult Codes Enable/Disable and No Response Answer Result Codes “Multi-Tech” or “Standard AT”Result Codes Basic and Extended and Call Progress Selection Result Codes Verbose/TerseTERSE VERBOSEX2 Looks for dial tone only and will not provide a busy response DataTalker Owner’s ManualF.8 RS232C Interface Control Commands F.7 Phone Line Conditioning CommandsEnable or Disable Recognition of Remote Digital Loop Signal Enable/Disable Trellis Coded ModulationV.42 Mode Select F.9 Error Correction CommandsAuto-Reliable Buffering DataTalker Owner’s ManualV.42 Error Correction/300bps Enable/Disable Auto-Reliable Fallback CharacterRetransmit Count Appendix F - MMH2834 Modem CommandsData Compression F.10 Compression and Maximum Block Size CommandsMaximum Block Size Speed Conversion $BA F.11 Speed Conversion CommandsModem Baud Rate $MB AT$MB28800AT$SB115200 Serial Port Baud Rate= 115,200 bps DataTalker Owner’s ManualHelp Screens $H F.12 Immediate Action CommandsInquiry for Product Code Listing Current Operation Parameters L5, L7ATL8 Listing On-Line DiagnosticsDataTalker Owner’s Manual Glossary GlossaryCircuit Any closed path through which electrical current can flow De facto standards A de facto standard is one of two types of voluntary standards recognized by a given market. It is introduced by a single vendor and becomes a standard by its widespread use and acceptance by other vendors. AT&Ts Bell 212A, IBMs Binary Synchronous Protocol or DECs VT-100 terminal protocol are examples of de facto standards. Compare with de jure standards GlossaryDataTalker Owner’s Manual 1. The way text is set up on a pageFormat Node Any point within a network which has been assigned an address GlossaryP Parameter DataTalker Owner’s Manual RJ-45 An 8-wire modular connector for voice and data circuitsUTP unshielded twisted pair Telephone-type wiring V Threshold A value or condition which, when reached, triggers an eventGlossary Index SymbolsDataTalker Owner’s Manual Index DataTalker Owner’s Manual Troubleshooting