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Multi-Tech Systems DT102/xx, DT101/xx owner manual Troubleshooting

Models: DT102 DT101 DT102/xx DT101/xx

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Chapter 7 - Troubleshooting

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Multi-Tech Systems DT102/xx, DT101/xx owner manual Troubleshooting

Contents

Owner’s Manual Data/Voice/Fax ConcentratorDesktop Models DT101, DT102, DT101/xx, DT102/xx Rack-Mount Models DT101R, DT102R, DT101R/xx, DT102R/xxTrademarks DataTalker SeriesRecord of Revisions PatentsContents Chapter 2 - ConfigurationChapter 1 - Introduction and Description Chapter 3 - Front and Rear Panel DescriptionsChapter 8 - Warranty, Service and Tech Support Chapter 4 - Unpacking and ConfigurationChapter 5 - Installation Chapter 7 - TroubleshootingAppendix A - ASCII Conversion Chart AppendixesGlossary IndexPage Chapter 1 - Introduction and Description Chapter 1 - Introduction Chapter 2 - Configuration Examples1.1 Introduction 1.2 About This ManualChapter 8 - Service, Warranty and Tech Support Chapter 4 - Unpacking and ConfigurationChapter 5 - Installation Chapter 7 - TroubleshootingDataTalker Owner’s Manual 1.3 Product Description+++ATCR Figure 1-2. Block DiagramChapter 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 circuitry1.4.3 Composite Link 1.4 System Features1.4.1 Voice/Fax 1.4.2 Data Channel1.4.6 Diagnostics 1.4.7 Operational StatisticsChapter 1 - Introduction and Description DataTalker Owner’s Manual 1.5 FCC Regulations for Telephone Line InterconnectionChapter 1 - Introduction and Description 1.6 Canadian Limitations Notice1.7.2 Sync Data Channel 1.7 Specifications1.7.3 System Control Command Port 1.7.1 Async Data Channel1.7.8 Voice/Fax Channel 1.7.5 Internal Modem1.7.6 Internal DSU 1.7.7 ISDN Terminal AdapterDataTalker Owner’s Manual 1.7.9 Electrical/PhysicalDesktop Models Rack-mount ModelsChapter 2 - Configuration 2.1 Introduction DataTalker ConfigurationsValid Voice/Fax Configurations Configuration2.2 Configuration 1 - Dial-Up Link Chapter 2 - ConfigurationHome Office DataTalker Owner’s Manual To configure the DataTalker, enter 1 and press ENTERAT$D1 CR AT&W CR Q CR Chapter 2 - ConfigurationATDTNumber 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 channel2.3 Configuration 2 - MMH900 Series with Voice/Fax Chapter 2 - ConfigurationFigure 2-2. Adding Voice to Data-Only Network Echo DataTalker Owner’s ManualAsync 19200Speed Chapter 2 - ConfigurationComposite Link Settings - Internal DSU Configurations2.4 Configuration 3 - LAN to LAN Figure 2-3. LAN to LAN ConfigurationDataTalker 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 - ConfigurationFigure 2-4. PBX to PBX Configuration 2.5 Configuration 4 - PBX to PBXRemote Site Local SiteChapter 2 - Configuration DataTalker Owner’s Manual 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 configurationsChapter 3 - Front and Rear Panel Descriptions 3.1 Introduction 3.2 IndicatorsTable 3-1. LED Indicators Data/Command IndicatorsComposite 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 3.3.3 DATA/COMMAND Connector 3.3 Connectors3.3.1 Frame Ground Connector GND 3.3.2 POWER Connector3.3.10 MODEM DIAL-UP Connector 3.3.7 VOICE/FAX CHANNEL 1 E&M Connector3.3.8 DSU/TA DIGITAL Connector 3.3.9 MODEM LEASED ConnectorChapter 3 - Front and Rear Panel Descriptions 3.4 Switches and Shunts3.4.1 Front Panel Switches 3.4.2 Power SwitchDataTalker Owner’s Manual 3.4.3 DIP Switch3.4.4 RS232C/V.35 Shunt PositionChapter 4 - Unpacking and Configuration Figure 4-1. Unpacking 4.1 Introduction4.2 Unpacking DataTalker Owner’s ManualConnector 4.3 Configuration Summary4.4 Data Port Configuration Considerations Chapter 4 - Unpacking and ConfigurationDataTalker Owner’s Manual 4.5 Voice/Fax Channel Configuration ConsiderationsChapter 4 - Unpacking and Configuration 4.6 Composite Link Configuration Considerations4.7 Configuration Procedure Table 4-1. 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 ConfigurationVoice/Fax Channel Configuration DataTalker Owner’s ManualData Port Async/Sync 1 - Async 2 - Sync P - Previous Menu Selection Composite Link Configuration Chapter 4 - Unpacking and 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 5.1 Introduction Table 5-1. Cabling ProcedureStep Procedure Composite Link DIP SwitchFigure 5-4. DSU Line Connection Chapter 5 - Installation MMH2834 Modem, Leased LineFigure 5-3. Leased Line Connection DSU ISDN Terminal AdapterDataTalker Owner’s Manual External Modem, DSU, or ISDN Terminal AdapterData Channel Voice/Fax ChannelChapter 5 - Installation Figure 5-9. PBX ConnectionFigure 5-10. PBX E&M Trunk Connection DataTalker Owner’s Manual Table 5-2. V.35 Shunt ProcedureStep Procedure 5.3 V.35 ShuntChapter 5 - Installation 5.4 Power-On and CheckoutTable 5-3. Power-On and Checkout Procedure Composite Link DeviceComposite link Data channel Voice/fax channel Composite LinkData Channel Chapter 5 - Installation Voice/Fax Channel DataTalker Owner’s Manual Chapter 6 - Menus 6.2 Configurations Menu 6.1 IntroductionDataTalker Owner’s Manual Chapter 6 - Menus 6.2.1 Data Port ConfigurationDataTalker B 8 OUT 6 OUT 22 OUT 4 IN 20 IN 25 IN DataTalker Owner’s ManualDataTalker A IN IN IN OUT OUT UT Composite Link FacilityChapter 6 - Menus 6.2.2 Sync Data Port Configuration6.2.3 Voice/Fax Channel Configuration Voice/Fax Channel 1 ConfigurationDataTalker Owner’s Manual Configuration LocalRemote ConfigurationPage 6.2.4 Composite Link Configuration Composite Link Settings - Internal MMH2834Chapter 6 - Menus x - Enter the number of seconds0 is off P - Previous Menu SelectionComposite Link Settings - Internal 56K DSU Composite Link Settings - Internal TAChapter 6 - Menus DataTalker Owner’s Manual 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 Selectionx - Enter the number of seconds0 is off P - Previous Menu Composite Link Settings - External DeviceChapter 6 - Menus x - Enter the number of minutes P - Previous MenuDataTalker Owner’s Manual 6.3 Statistics3 - Reset Voice/Fax Channel 4 - Reset Voice/Fax Channel 6.4 Reset Options6.5 Diagnostic Tests Reset Options 1 - Reset Unit 2 - Reset Data and Voice/Fax ChannelsExternal Device Test 6.5.1 Loop TestsVoice Loopback Test Internal DSU Test6.6 Configure Remote Unit 6.6.1 MMV8/16/32 Configuration OptionsChapter 6 - Menus DataTalker Owner’s Manual 6.6.2 Quick SetupWarning The memory test will destroy all stored configurtions Will this unit be installed at the main office? Y/N/QDigital DSU Table 6-1. Main Office InstallationMMH2834 Modem Dial-up MMH2834 Modem Leased LineDataTalker Owner’s Manual Configuration and installation is completeMMH2834 Modem Dial-up Table 6-2. Home Office InstallationStep Procedure Chapter 6 - MenusDATA/COMMAND Connector RS232 Cable POWERDataTalker Owner’s Manual Chapter 7 - Troubleshooting Link Alarms 7.1 Introduction7.2 Importance of the Composite Link Statistics Report Receive Block Errors7.3 Test Cables Chapter 7 - TroubleshootingVoice/Fax Channel 7.4 Troubleshooting GuideDataTalker Owner’s Manual Data ChannelCommand port device not Table 7-1. Command Port TroubleshootingTable 7-2. Composite Link Troubleshooting Internal DSU ProblemSolution Problem Composite link down with CD, CTS, XMT, RD and RCV LEDs onFlashing RXT LED Table 7-2. Composite Link Troubleshooting Internal DSUChapter 7 - Troubleshooting Problem Composite link down with CTS, XMT and RD LEDs onInternal ISDN Terminal Adapter Composite link down with CD, CTS, XMT, RCV and RD LEDs onDataTalker Owner’s Manual Problem Composite link down with CTS, XMT, and RD LEDs onInternal MMH2834 Modem SolutionChapter 7 - Troubleshooting SolutionsExternal Composite Link Device Flashing RXT LED Composite link down with CD, CTS and RD LEDs onSync Data Channel Table 7-3 Data Channel TroubleshootingProblemPossible CausesSolution Async Data ChannelFXO to FXO configuration - local telephone does not ring Table 7-4. Voice/Fax TroubleshootingVolume levels not sufficient on local voice/fax channel Data throughput slows excessively when voice/fax channel is activeSolution Table 7-4. Voice/Fax Troubleshooting continuedNo communication on voice/fax channel ProblemStep Procedure 7.5 Composite Link Settings - Internal DSUTable 7-5. Composite Link Settings - Internal DSU Chapter 7 - TroubleshootingDataTalker Owner’s Manual 7.6 Composite Link Settings - Internal ISDN Terminal AdapterTable 7-6. Composite Link Settings - Internal ISDN Terminal Adapter Step ProcedureChapter 7 - Troubleshooting 7.7 Composite Link Settings - Internal ModemTable 7-7. Composite Link Settings - Internal MMH2834 StepProcedureDataTalker Owner’s Manual 7.8 Composite Link Settings - External DeviceTable 7-8. Composite Link Settings - External Device Step ProcedureStep Procedure 7.9 Composite Link StatisticsTable 7-9. Composite Link Statistics Chapter 7 - TroubleshootingDataTalker Owner’s Manual Step Procedure 7.10Data Port ConfigurationTable 7-10. Data Port Configuration Chapter 7 - TroubleshootingDataTalker Owner’s Manual Data Port ConfigurationStep Procedure 7.11 Voice/Fax Channel ConfigurationTable 7-11. Voice/Fax Channel Configuration Chapter 7 - TroubleshootingDataTalker Owner’s Manual Step Procedure 7.12Diagnostic TestingTable 7-12. Diagnostic Testing Chapter 7 - TroubleshootingDataTalker Owner’s Manual Chapter 8 - Warranty, Service and Tech Support DataTalker Owner’s Manual 8.2 Limited Warranty8.2.1 On-line Warranty Registration 8.1 Introduction8.3 Tech Support 8.3.2 ServiceChapter 8 - Warranty, Service and Tech Support ATTN SERVICE OR REPAIRSIf you know the file name 8.4 The Multi-Tech BBSTo log on to the Multi-Tech BBS To Download a file8.5 About the Internet Chapter 8 - Warranty, Service and Tech Supportftp//ftp.multitech.com DataTalker Owner’s Manual Appendixes CODE Appendix A - ASCII Conversion ChartCTRL CODE HEX DEC CODE HEXSIGNAL Appendix B - RS-232C Interface SpecificationAppendix B - RS-232C Interface Specification SIGNAL INFORMATIONTo DCE Device Appendix C - Cabling DiagramsChannel Cables DataTalker Owner’s ManualV.35 Adapter Cable Configured on a RS232C/V.35 Composite Link Appendix C - Cabling DiagramsComposite Link Cabling RS232C/V.24 Configured Composite LinkRJ-48 Cable for Internal DSU 1 2 3 4 5 6 7DataTalker Owner’s Manual 1 2 3 4 5 6 7DSU Back-to-Back Cable Voice/Fax Channel ConnectorsWire E&M Voice/Fax Channel CableCHANNEL DEVICE INITIATED PACING Appendix D - Flow Control BackgroundDataTalker Owner’s Manual DATATALKER-INITIATED FLOW CONTROLS6 Wait Time for Dial Tone Appendix E - MMH2834 Modem S-RegistersIntroduction S0 Number of Rings Until Modem AnswersS18 Automatic Leased Line Restoral S13 Remote Configuration Escape CharacterS19 Dial-Back Timer S11 Tone Dialing Tone Spacing and DurationAppendix F - MMH2834 Modem Commands F.1 Introduction MMH2834 Command SummaryAppendix F - MMH2834 Modem Commands Negotiate V42 Mode During Handshake COMMANDTYPE DESCRIPTIONA or F.2 Dialing Action CommandsDial Command Continuous RedialAutomatic Pauses in Dialing F.3 Dial Modifier CommandsPulse or Tone Dial P Set Pulse Dial Ratios &P“Calling Card” Detect Tones Wait for New DialtoneReverse the Mode of Operation R Flash On HookNumber Linking F.4 Phone Number Memory CommandsStoring Phone Numbers D...NModem Reset F.5 Configuration and Default Storage CommandsStore Configuration & S-Register Params. in Non-Volitile Memory &W Loading Factory Defaults &FResult Codes “Multi-Tech” or “Standard AT” F.6 Command Response Result Code CommandsEcho Command Mode Characters Result Codes Enable/Disable and No Response AnswerVERBOSE Result Codes Verbose/TerseResult Codes Basic and Extended and Call Progress Selection TERSEX2 Looks for dial tone only and will not provide a busy response DataTalker Owner’s ManualEnable/Disable Trellis Coded Modulation F.7 Phone Line Conditioning CommandsF.8 RS232C Interface Control Commands Enable or Disable Recognition of Remote Digital Loop SignalDataTalker Owner’s Manual F.9 Error Correction CommandsV.42 Mode Select Auto-Reliable BufferingAppendix F - MMH2834 Modem Commands Enable/Disable Auto-Reliable Fallback CharacterV.42 Error Correction/300bps Retransmit CountF.10 Compression and Maximum Block Size Commands Data CompressionMaximum Block Size AT$MB28800 F.11 Speed Conversion CommandsSpeed Conversion $BA Modem Baud Rate $MBDataTalker Owner’s Manual Serial Port Baud RateAT$SB115200 = 115,200 bpsListing Current Operation Parameters L5, L7 F.12 Immediate Action CommandsHelp Screens $H Inquiry for Product CodeListing On-Line Diagnostics ATL8DataTalker Owner’s Manual Glossary GlossaryCircuit Any closed path through which electrical current can flow DataTalker Owner’s ManualDe 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 Glossary1. The way text is set up on a page DataTalker Owner’s ManualFormat Glossary Node Any point within a network which has been assigned an addressP Parameter DataTalker Owner’s Manual RJ-45 An 8-wire modular connector for voice and data circuitsThreshold A value or condition which, when reached, triggers an event UTP unshielded twisted pair Telephone-type wiring VGlossary Symbols IndexDataTalker Owner’s Manual Index DataTalker Owner’s Manual Troubleshooting