Multi-Tech Systems MMV1600 owner manual Rd Off

Page 67

RD LEDs ON

 

2.

Connect composite link cable

 

 

 

 

between mux and modem.

 

 

 

 

Composite link and all

1. Mux memory failure

1.

Enter ATL and record all channel

 

channels down with

 

 

parameters before running memory

 

RD and all channel

 

 

test. Perform memory test by entering

 

RCV LEDs ON

 

 

&T2 command. All stored

 

parameters will be destroyed.

 

 

 

 

 

 

2.

Reconfigure all channel parameters.

 

 

 

3.

Call Tech Support for assistance,

 

refer to Chapter 8.

 

 

 

 

 

Flashing RXT LED

1. High error rate on

1. View composite link statistics using

 

 

communication line

 

#S command, refer to Chapter 5.

 

 

Table 7-1. Data Troubleshooting Guide(Continued)

Condition

Possible Cause

 

 

Corrective Action

 

Flashing RXT LED

1. High error rate on

2.

Perform local and remote loopback

(Continued)

communication line

test, refer to the Local and

 

 

 

 

 

 

 

Communications Line Testing in this

 

 

 

 

Chapter.

 

 

 

3.

Call phone company and verify

 

 

 

 

communication line.

 

 

 

4.

Call Tech Support for assistance,

 

refer to Chapter 8.

 

 

 

 

 

All channel devices not

1. Incorrect channel

1.

Verify channel parameter settings for

communicating with

parameter settings

all channels, refer to Chapter 5 for the

mux, composite link up

C0

command.

 

 

 

 

 

with CO, CTS, XMT and

 

 

 

 

 

RCV LEDs ON and

 

2. Change channel parameters to match

 

RD OFF

 

 

channel devices. Refer to Chapter 5

 

for Channel Paramater Commands.

 

 

 

 

 

 

3.

Perform channel device testing, refer

 

to Channel Device Testing in this

 

 

Chapter.

 

 

 

4.

Call Tech Support for assistance,

 

refer to Chapter 8.

 

 

 

 

 

 

2.Channel devices

1. Refer to cabling diagrams of both mux

incorrectly

cabled

and channel devices.

 

 

 

 

 

 

2.

Call Tech Support for assistance,

 

refer to Chapter 8.

 

 

 

 

 

Some channel devices

1. Incorrect channel

1.

Verify channel parameter settings for

 

not communicating

parameter settings

 

for those channel devices, refer to Lx

 

with MultiMux and

for those channel devices

 

command in Chapter 5 to display

 

composite link up

 

 

channel parameters.

 

 

 

2.

Perform channel device testing, refer

 

to Channel Device Testing in this

 

 

Chapter.

 

 

 

3.

Call Tech Support for assistance,

 

refer to Chapter 8.

 

 

 

 

 

 

Table 7-1. Data Troubleshooting Guide(Continued)

Condition

Possible Cause

Some channel devices 2.

Incorrect cabling for those

not communicating

channel devices

with MultiMuxand

 

composite linkup

 

refer to Chapter8.

 

Channel device losing 1.

Flow control not properly

data

set.

F2 and F5-F6commands in

Corrective Action

1.Refer to cabling diagrams of both mux and channel devices.

2.Call Tech Support for assistance,

1.Verify flow control operations for the selected channel device, refer to F0-

Chapter 5.

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Contents MultiMux Page Record of Revisions RevisionDescription MultiMux #MMV1600C #MMV3200CTable of Contents Service, Warranty and Tech Support CommandsOperating Procedures TroubleshootingTables AboutThisManual Service, Warranty and Tech Support Description of Statistical Multiplexing Background1.1 Statistical Multiplexing Product Description CommunicationsMultiMux MMV1600/3200 Series Block Diagram Page Dynamic Load Balance System Features Voice/FaxNetworking Dual Composite LinksParameter Memory Channel SwitchingCommand Modem DiagnosticsResponse Time Control Dynamic BufferingSynchronous Data Channel AU7USA-20328-MD-E FCC Regulations for Telephone Line InterconnectionDOC Terminal Equipment AU7USA-18883-DE-N DSUInternal DSU Specifications Async Data ChannelsSystem Control Composite LinkDtmf Voice ChannelsElectrical/Physical CompatibilityModel Description Configuration 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 Local Site Voice/Fax Channel Parameters Configuration 4 FXO to FXSConfiguration 4 Remote Site Voice/Fax Channel Parameters Configuration 5 E&M Configuration 5 Remote Site Voice/Fax Channel Parameters Configuration 5 Local site Voice/Fax Channel ParametersConfiguration 6 FXS to FXS Configuration 6 Remote Site Voice/Fax Channel Parameters Configuration 6 Local Site Voice/Fax Channel ParametersRemote Site Configuration 7 Remote Site Voice/Fax Channel Parameters Configuration 7 Local Site Voice/Fax Channel ParametersConfiguration 8 LAN to LAN Page External Modem/DSU with RS232C Interface InstallationProcedureCabling Procedure StepProcedureAsync Channel Step ProcedureV.35 Interface Sync Data Channel Port B onlyComposite Link Cabling Supervisory Console Configuration ProcedureCommand Modem Step Procedure Voice/Fax Channels Step Procedure Async ChannelsPage Type Command Description Command SummaryATC1B4800P1F1E0 $DSUASP SNGA..H$DSUACL $DSUBCLGeneral Commands CommandDescription#MA Help H command menu is as follows General HelpStore New ParametersH7 menu is as follows H4 menu is as followsH5 menu is as follows H6 menu is as followsChannel Parameter Commands DTR ENQ/ACKMLA/B/D SB2 SB1$ Muxacli Composite Link Speed and Clocking Commands$DSUCL $DSUSP$MUXB Additional Composite Link Commands#RBxxxxx Retransmit TimerList Composite ReportVoice/Fax Channel Commands Command Level ATV1/2LIFXO WireSilence Suppression Local InterfaceATV1/2RIFXSG Test CommandsATV1/2LIFXSL ATV1/2RIFXOT11 Command Modem CommandsT12 Configuration of Port B Composite Link MultiMuxOperatingProceduresMultiMux Operating Procedures Configuration of Port a 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 Introduction ImportanceofCompositeStatisticsData Troubleshooting Guide TroubleshootingGuideTestCables RD LED on RD OFF Voice/fax channel Voice/Fax Troubleshooting GuideCannot 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 Sync Data Channel Testing Procedure SyncDataChannelTestingService, Warranty and Tech Support Repair Procedures for International Distributors AppendixA Ascii Character Code/Hex/Decimal Conversion ChartAppendix B Signal Information Negative PositiveAppendix C Cabling DiagramsDCE to DTE cabling Command Port CablesComposite Link Cabling RJ48 Cabling for Internal DSU I-V Voice/Fax Channel Cable RJ45 Spade Lug Wire Color FunctionVoice/Fax Channel Connectors Description FXO Description FXS DescriptionLast Command Name DefaultAnswer a RepeatATQ1 ATH1ATH0 ATOWrite ATD5551212RRegister Read orStore Active Configuration displaysView Active User ProfilesATX1 ATX0ATX2 After Dial Command ExecutionMode While Returning toIndicator Description Table E-1. LED IndicatorsAppendix E Back Panel LED Indicators DescriptionFCR Command Port TERMINAL/PC Connector ON/OFF SwitchPower Connector BPS Modem DIAL-UP Line ConnectorVOICE/FAX Channel 1 FXS Connector VOICE/FAX Channel 2 FXS ConnectorVOICE/FAX Channel 2 FXO Connector VOICE/FAX Channel 1 E&M ConnectorRS232C/V.35 Shunt Channel Board Number of Channels SwitchChannel # Flow Control Background Appendix FOff Printer pacing and Flow Control Glossary of Terms Page Format Page Parameter Page Page Symbols DSU DOCFXO FXS External Composite LinkLads Link Protocol List Channel Parameters CommandLoad DSU Factory Defaults Command MultiMux Functional Testing ProcedureRJ48S PDNPstn RENTransmit XMT Indicator Stop Bit Command SB1-SB2Stdm Voice/Fax Channels Voice/Fax Channel Testing ProcedureVoice/Fax Input Level Gain Command Word Length Select Command WL5-8
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