Multi-Tech Systems MMV1600 owner manual Configuration 2 Composite Link Configuration

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2.3 Configuration 2

Configuration 2 is two MultiMux MMV1616C sixteen channel multiplexers with two external Multi-Tech 56K bps Digital Service Units (DSUs) linking the two sites over a Digital Data Service (DDS) network. The RS232C interface on The DSUs is connected to COMPOSITE LINK A EXTERNAL MODEM/DSU connector on the back panel of the MMV1616C. The MMV1616Cs are set up for an external link device with a maximum link speed of 56,000 bps. Composite link A needs to be set up for external clocking. Both external DSUs must be set for DDS clocking. Configuration 2 is shown in Figure 2-2.

Composite Link

PDN

	Asynchronous		Asynchronous
	Channel		Asynchronous
	Channel	Dial-Up Line	Channel
		Dial-Up Line	Channel
		MT56DSU2	MT56DSU2
	MultiMux 16
			MultiMux 16
	MultiMux MMV1616		MultiMux MMV1616

Unix Host

Local Site

(Node 1)

Printer

Terminal Terminal

Printer

TerminalPrinter

Remote Site

(Node 2)

Figure 2-2. Configuration 2

The channels are set up with the same considerations as in Configuration 1. The composite link configuration may be changed using the List Composite Link Configuration ($L) command which is shown in the following example.

DSU			LOOP
TYPE	SPEED	CLOCKING	BACK
EXTERNAL	56000	EXTERNAL	OFF

Configuration 2 Composite Link Configuration

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Contents MultiMux Page MultiMux #MMV1600C #MMV3200C Record of Revisions RevisionDescriptionTable of Contents Troubleshooting CommandsOperating Procedures Service, Warranty and Tech SupportTables AboutThisManual Service, Warranty and Tech Support Description of Statistical Multiplexing Background1.1 Statistical Multiplexing Communications Product DescriptionMultiMux MMV1600/3200 Series Block Diagram Page Dual Composite Links System Features Voice/FaxNetworking Dynamic Load BalanceDiagnostics Channel SwitchingCommand Modem Parameter MemoryResponse Time Control Dynamic BufferingSynchronous Data Channel AU7USA-18883-DE-N DSU FCC Regulations for Telephone Line InterconnectionDOC Terminal Equipment AU7USA-20328-MD-EComposite Link Specifications Async Data ChannelsSystem Control Internal DSUCompatibility Voice ChannelsElectrical/Physical DtmfConfiguration Description Model DescriptionConfiguration Configuration 1 Remote Site Channel Parameters Configuration 1 Local Site Channel ParametersConfiguration 1 Composite Link Configuration Configuration 2 Composite Link Configuration Remote Site Configuration 3 Remote Site 1 Channel Parameters Configuration 3 Local Site 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 StepProcedure InstallationProcedureCabling Procedure External Modem/DSU with RS232C InterfaceSync Data Channel Port B only Step ProcedureV.35 Interface Async ChannelComposite Link Cabling Configuration Procedure Supervisory ConsoleCommand Modem Step Procedure Async Channels Step Procedure Voice/Fax ChannelsPage Type Command Description Command SummaryATC1B4800P1F1E0 $DSUBCL SNGA..H$DSUACL $DSUASPGeneral Commands CommandDescription#MA Parameters H command menu is as follows General HelpStore New HelpH6 menu is as follows H4 menu is as followsH5 menu is as follows H7 menu is as followsChannel Parameter Commands ENQ/ACK DTRMLA/B/D SB1 SB2$DSUSP Composite Link Speed and Clocking Commands$DSUCL $ MuxacliAdditional Composite Link Commands $MUXBReport Retransmit TimerList Composite #RBxxxxxVoice/Fax Channel Commands Command Level Local Interface WireSilence Suppression ATV1/2LIFXOATV1/2RIFXO Test CommandsATV1/2LIFXSL ATV1/2RIFXSGT11 Command Modem CommandsT12 Configuration of Port a Composite Link MultiMuxOperatingProceduresMultiMux Operating Procedures 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 IntroductionData Troubleshooting Guide TroubleshootingGuideTestCables RD LED on RD OFF Voice/Fax Troubleshooting Guide Voice/fax channelCannot communicate Channel Device Testing Procedure ChannelDeviceTestingLocal Loop Test #4 DSU and Communications Line Testing Procedure DSUandCommunicationsLineTestingRemote Digital Loop Test #5 MultiMux Functional Testing Procedures MultiMuxFunctionalTestingProceduresWatch DOG Test Passed Voice/Fax Channel Testing Procedure Voice/FaxChannelTestingVOICE/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 Description FXO Description FXS Description RJ45 Spade Lug Wire Color FunctionVoice/Fax Channel Connectors I-V Voice/Fax Channel CableRepeat Command Name DefaultAnswer a LastATO ATH1ATH0 ATQ1Read or ATD5551212RRegister WriteUser Profiles Configuration displaysView Active Store ActiveATX1 ATX0ATX2 Returning to Command ExecutionMode While After DialIndicator Description Table E-1. LED IndicatorsAppendix E Back Panel LED Indicators DescriptionFCR BPS Modem DIAL-UP Line Connector ON/OFF SwitchPower Connector Command Port TERMINAL/PC ConnectorVOICE/FAX Channel 1 E&M Connector VOICE/FAX Channel 2 FXS ConnectorVOICE/FAX Channel 2 FXO Connector VOICE/FAX Channel 1 FXS ConnectorRS232C/V.35 Shunt Channel Board Number of Channels SwitchChannel # Appendix F Flow Control BackgroundOff Printer pacing and Flow Control Glossary of Terms Page Format Page Parameter Page Page Symbols DOC DSUFXO FXS External Composite LinkLads MultiMux Functional Testing Procedure List Channel Parameters CommandLoad DSU Factory Defaults Command Link ProtocolREN PDNPstn RJ48STransmit XMT Indicator Stop Bit Command SB1-SB2Stdm Word Length Select Command WL5-8 Voice/Fax Channel Testing ProcedureVoice/Fax Input Level Gain Command Voice/Fax Channels