Multi-Tech Systems MMV1600 owner manual

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When the voice/fax board is used, connections can be made for either channel 1 or channel 2 or both channels and the types of connections are the same for both channels. If a PBX is being used at both the local and remote locations and an E&M trunk connection is desired, then the E&M connections are used for the desired channels. If a PBX is being used at the local location and a dedicated instrument (telephone or fax machine) is used at the remote location, then the FXO connection is made to the station side of the PBX and the remote location is connected to the FXS connector on the back panel of the remote MultiMux. If a dedicated instrument is being used at the both the local and remote locations for either voice or fax communications over the composite link, then the FXS connection is used.

The composite links need to be connected to a PDN either with internal 56K bps DSUs or equivalent external DSUs or synchronous modems. If both composite links are being used, they both have to be connected to the PDN. The internal DSUs are connected to the PDN through the COMPOSITE LINK A or B INTERNAL DSU connector on the back panel. External DSUs or modems are connected to the PDN by the COMPOSITE LINK A or B EXTERNAL MODEM/ DSU connector on the back panel and if the DSU or modem is V.35 compatible, the shunt on the aggregate board needs to be moved from the RS232C position to the V.35 position. There is a shunt for composite link A and composite link B.

The supervisory console is connected to the aggregate board through the COMMAND PORT connector on the back panel. The supervisory console connection is also an RS232 connection. This completes a typical hardware setup for a MultiMux. Now the MultiMux has to be configured to talk to the channel devices and communicate over the composite link.

Configuration of a MultiMux is accomplished through a combination of setting DIP switches behind the front panel and software commands entered through the supervisory console. The DIP switches determine whether the MultiMux is an eight, sixteen, twenty-four or thirty-two channel multiplexer, whether the composite link devices are internal DSUs or external devices, whether or not the command modem will accept remote access, etc. The DIP switches control the hardware setup and the operating setup is controlled through software commands. The software commands are entered at a terminal connected to the COMMAND PORT which are transferred to either the command processor or command modem in the MultiMux. The software commands are AT commands that configure the channel devices to communicate with the MultiMux and configure the composite link devices to communicate with the PDN. To configure a channel device, the correct channel speed has to be established, number of data and stop bits in a word determined, the type of flow control used and whether or not pacing is active. These are just some of the AT commands that are used to configure the channel devices.

When the MultiMux MMV1600/3200 series is powered up, the command processor transfers the stored configuration of the channel devices to the data processor. The data processor takes the configuration information and configures each channel for its particular conditions. The composite link has to be configured for its parameters before data can be transferred.

The composite link parameters are determined by more than just AT commands transferred to the command processor. The composite link parameters are determined by what type of device is used, whether it is internal or external, speed, what type of remote multiplexer we are communicating with and a number of line conditioning parameters. The type of device used as the composite link device is determined by whether the device is internal or external which is established by DIP switch settings and by the type of device installed in the MultiMux or connected to the EXTERNAL COMPOSITE LINK RS232C/V.35 connector on the back panel. If an internal composite link DSU is installed in the MultiMux, the DIP switch would be set for an internal composite link DSU and a DSU speed select AT command ($DSUA/BSPxxxxx) would determine the operational speed of the DSU. The MultiMux MMV1600/3200 series is now ready to transfer data from its async devices through an internal composite link DSU.

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Contents MultiMux Page MultiMux #MMV1600C #MMV3200C Record of Revisions RevisionDescriptionTable of Contents Commands Operating ProceduresTroubleshooting Service, Warranty and Tech SupportTables AboutThisManual Service, Warranty and Tech Support Background Description of Statistical Multiplexing 1.1 Statistical Multiplexing Communications Product DescriptionMultiMux MMV1600/3200 Series Block Diagram Page System Features Voice/Fax NetworkingDual Composite Links Dynamic Load BalanceChannel Switching Command ModemDiagnostics Parameter MemoryDynamic Buffering Response Time ControlSynchronous Data Channel FCC Regulations for Telephone Line Interconnection DOC Terminal EquipmentAU7USA-18883-DE-N DSU AU7USA-20328-MD-ESpecifications Async Data Channels System ControlComposite Link Internal DSUVoice Channels Electrical/PhysicalCompatibility DtmfConfiguration Description Model DescriptionConfiguration Configuration 1 Local Site Channel Parameters Configuration 1 Remote Site Channel ParametersConfiguration 1 Composite Link Configuration Configuration 2 Composite Link Configuration Remote Site Configuration 3 Local Site Channel Parameters Configuration 3 Remote Site 1 Channel ParametersConfiguration 3 Remote Site 2 Channel Parameters Configuration 4 FXO to FXS Configuration 4 Local Site Voice/Fax Channel ParametersConfiguration 4 Remote Site Voice/Fax Channel Parameters Configuration 5 E&M Configuration 5 Local site Voice/Fax Channel Parameters Configuration 5 Remote Site Voice/Fax Channel ParametersConfiguration 6 FXS to FXS Configuration 6 Local Site Voice/Fax Channel Parameters Configuration 6 Remote Site Voice/Fax Channel ParametersRemote Site Configuration 7 Local Site Voice/Fax Channel Parameters Configuration 7 Remote Site Voice/Fax Channel ParametersConfiguration 8 LAN to LAN Page InstallationProcedure Cabling ProcedureStepProcedure External Modem/DSU with RS232C InterfaceStep Procedure V.35 InterfaceSync Data Channel Port B only Async ChannelComposite Link Cabling Configuration Procedure Supervisory ConsoleCommand Modem Step Procedure Async Channels Step Procedure Voice/Fax ChannelsPage Command Summary Type Command DescriptionATC1B4800P1F1E0 SNGA..H $DSUACL$DSUBCL $DSUASPCommandDescription General Commands#MA H command menu is as follows General Help Store NewParameters HelpH4 menu is as follows H5 menu is as followsH6 menu is as follows H7 menu is as followsChannel Parameter Commands ENQ/ACK DTRMLA/B/D SB1 SB2Composite Link Speed and Clocking Commands $DSUCL$DSUSP $ MuxacliAdditional Composite Link Commands $MUXBRetransmit Timer List CompositeReport #RBxxxxxVoice/Fax Channel Commands Command Level Wire Silence SuppressionLocal Interface ATV1/2LIFXOTest Commands ATV1/2LIFXSLATV1/2RIFXO ATV1/2RIFXSGCommand Modem Commands T11T12 MultiMuxOperatingProcedures MultiMux Operating ProceduresConfiguration of Port a Composite Link Configuration of Port B Composite LinkConfiguration of Port B Sync Data Voice/Fax Operating Procedures Voice/Fax Operating ProceduresCommand Modem Operating Procedures Command Modem Operating ProceduresCommand Modem Access on Command modem operation and put ImportanceofCompositeStatistics IntroductionTroubleshootingGuide Data Troubleshooting GuideTestCables RD LED on RD OFF Voice/Fax Troubleshooting Guide Voice/fax channelCannot communicate ChannelDeviceTesting Channel Device Testing ProcedureLocal Loop Test #4 DSUandCommunicationsLineTesting DSU and Communications Line Testing ProcedureRemote Digital Loop Test #5 MultiMuxFunctionalTestingProcedures MultiMux Functional Testing ProceduresWatch DOG Test Passed Voice/FaxChannelTesting Voice/Fax Channel Testing ProcedureVOICE/FAX Loopback Test #12 SyncDataChannelTesting Sync Data Channel Testing ProcedureService, Warranty and Tech Support Repair Procedures for International Distributors Ascii Character Code/Hex/Decimal Conversion Chart AppendixASignal Information Negative Positive Appendix BCabling Diagrams Appendix CCommand Port Cables DCE to DTE cablingComposite Link Cabling RJ48 Cabling for Internal DSU RJ45 Spade Lug Wire Color Function Voice/Fax Channel ConnectorsDescription FXO Description FXS Description I-V Voice/Fax Channel CableCommand Name Default Answer aRepeat LastATH1 ATH0ATO ATQ1ATD5551212R RegisterRead or WriteConfiguration displays View ActiveUser Profiles Store ActiveATX0 ATX1ATX2 Command Execution Mode WhileReturning to After DialTable E-1. LED Indicators Indicator DescriptionAppendix E LED Indicators Description Back PanelFCR ON/OFF Switch Power ConnectorBPS Modem DIAL-UP Line Connector Command Port TERMINAL/PC ConnectorVOICE/FAX Channel 2 FXS Connector VOICE/FAX Channel 2 FXO ConnectorVOICE/FAX Channel 1 E&M Connector VOICE/FAX Channel 1 FXS ConnectorChannel Board Number of Channels Switch RS232C/V.35 ShuntChannel # Appendix F Flow Control BackgroundOff Printer pacing and Flow Control Glossary of Terms Page Format Page Parameter Page Page Symbols DOC DSUExternal Composite Link FXO FXSLads List Channel Parameters Command Load DSU Factory Defaults CommandMultiMux Functional Testing Procedure Link ProtocolPDN PstnREN RJ48SStop Bit Command SB1-SB2 Transmit XMT IndicatorStdm Voice/Fax Channel Testing Procedure Voice/Fax Input Level Gain CommandWord Length Select Command WL5-8 Voice/Fax Channels
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