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Multi-Tech Systems MT5634ZBAV manual Local Digital Loopback Test V.54 Loop, 135

Models: MT5634ZBA MT5634ZBAV

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C Loopback Tests

Local Digital Loopback Test (V.54 Loop 2)

The local digital loopback test is identical to the remote digital loopback test with one exception. Instead of using your modem to signal a re- mote modem to place itself in digital loopback mode, your modem is placed in digital loopback mode while the remote modem is not. Data is entered and transmitted from the remote modem, sent across the phone line to your modem, and looped back to the remote modem.

AT&T3

OK

UUUUUUUUU UUUUU

Digital AnalogAnalog Digital

Computer or Terminal Local MultiModem

Remote MultiModem Computer or Terminal

Figure C-3. Local digital loopback test

Test procedure

1.Open your communications software and go into terminal mode. Type AT and press ENTER; you should get an OK message. Type AT\N and press ENTER to disable error correction.

2.Dial the remote modem and establish your online connection.

3.Type the escape sequence +++AT and press ENTER to bring your modem into online command mode.

4.Type AT&T3 and press ENTER. Once you receive an OK message from your modem (if responses are enabled), your modem is placed in digital loopback mode.

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Multi-Tech Systems MT5634ZBAV manual Local Digital Loopback Test V.54 Loop, 135

Contents

Model MT5634ZBA Model MT5634ZBAV Page Model MT5634ZBA Model MT5634ZBAV Models MT5634ZBA and MT5634ZBAV Contents User Guide FeaturesVii Callback SecurityViii Appendix C Loopback Tests145 User Guide Introduction Page Introduction Introduction Product DescriptionWhat Is in Your Modem Package? Related Manuals User Guide Quick Start Page What You Will Need IntroductionQuick Start We supplySafety Warnings Mounting the feet Assemble the ModemOpening the Modem Change the Internal JumpersInternal jumpers MT5634ZBAV Changing the Dial-Up/Leased-Line Jumpers User Guide Changing the Speaker JumperModem connections Connect the Modem to Your SystemLine Connection User Guide RS232 ConnectionPhone Connection Microphone Connection MT5634ZBAV onlyPower-On Test Power ConnectionQuick Start Speaker Connection MT5634ZBAV only Adding the Modem to Windows 95 or NT Install the Modem in WindowsRemoving Your Old Modem from Windows 95 or NT Install and Configure Your Software Quick Start User Guide Windows 95 HyperTerminal Call the Multi-Tech BBSWindows Terminal Quick Start Send a Fax Select Start Programs Accessories Fax Compose new faxOther Ways to Access Microsoft Fax Voice Mail Test Test the MT5634ZBAV Voice CircuitsLoopback Test AT+FCLASS=8 AT+VLS=7 Speakerphone TestReferences Features Page What Can You Do with Your Modem? FeaturesData FeaturesVoice MT5634ZBAV only FaxComputer Required EquipmentSerial Cable Communications Software Features Telephone LineConnections Connecting to the Computer RS232Connecting to a Telephone Set Phone Features Connecting to the Telephone Line LineConnecting to a Microphone MIC Connecting to a Sound Card Spkr Connecting to a Speaker SpkrConnecting to Power PWR Surge Protectors and Lightning Front Panel 56 56K Mode 56,000-32,000 bps. The 56 LED lights wheneverFeatures User Guide AT Commands Registers Result Codes Page AT Commands, S-Registers, and Result Codes AT CommandsEnter Key AT Command SummaryAnswer Communication Standard Setting Repeat Last CommandCarrier Control DialDS=y Dial Stored Telephone Number ATDT1028806127853500$123456789Echo Online Data Characters Echo Command Mode CharactersHook Control Information RequestMonitor Speaker Mode Monitor Speaker VolumeModulation Handshake Result Codes Enable/Disable Return Online to Data ModePulse Dialing Set Register ValueTone Dialing Sr? Read Register ValueResult Code Format Result Code OptionsLong Space Disconnect Modem ResetData Carrier Detect DCD Control Auto RetrainData Terminal Ready DTR Control Communications Mode Load Factory Settings22bis Guard Tone Control Auxiliary Relay ControlTest Commands Asynchronous Communications ModeData Set Ready DSR Control Store Current Configuration Display Current SettingsSelect Stored Configuration for Hard Reset Speaker Codec Loopback Zy=x Store Dialing Command\An Select Maximum MNP Block Size \Bn Transmit Break\Jn Data Buffer Control \Gn Modem Port Flow ControlBreak Control \Nn Error Correction Mode Selection \Qn Flow Control Selection \Tn Inactivity Timer\Vn Protocol Result Code Data Calling Tone \Xn XON/XOFF Pass-ThroughView Numbers in Blacklist Data Compression Control$Dn DTR Dialing DCn AT Command Control$EBn #CBDn Callback Delay +ES=n Enable Synchronous Buffered ModeCommand #CBF? Callback Failed Attempts Display #CBAn Callback Attempts#CBIn Local Callback Inactivity Timer Callback Failed Attempts ResetCommand #CBNy=x Store Callback Password #CBPn Callback ParityCallback Enable/Disable Callback Security ResetEnter Setup Password Command #S=x Store Setup Password+++ATCR Escape Sequence Registers Register Unit Range Default DescriptionS11 S10S28 S35S37 Register Unit Range Default Description S36S42 Register Unit Range Default Description S38S43 S48 Register Unit RangeS89 S108Terse Verbose Description Result CodesDelayed Remote Configuration Page Remote Configuration Basic ProcedureChanging the Setup Password SetupRemote Configuration Changing the Remote Escape Character User Guide Callback Security Page Callback Security Setup ProceduresTo Turn Callback Security On and Off User Guide To Change the Setup PasswordTo Set the Parity of the Callback Security Messages To Assign Callback Passwords and Phone Numbers Callback Security Password-Only Callback Calling ProceduresNumber-Entry Callback Extension-Entry Callback Direct Connection Callback Security Commands #CBFR Command #CBPn #CBS0 Zy=+-x,???Store Dialing Command Only after the setup password has been entered 100 Solving Problems Page Solving Problems None of the Indicators Light103 104 Modem Does Not Respond to Commands105 106 107 Modem Dials But Cannot Connect108 109 4The Modem Disconnects While Online110 File Transfer Is Slower Than It Should Be111 Data Is Being LostFax and Data Software Can’t Run at the Same Time 4The Modem Doesn’t Work with Caller ID112 Appendixes Page Regulatory Compliance FCC Regulations for Telephone Line Interconnection115 116 117 Canadian Limitations Notice118 FCC Fax Update119 Compliance with Babt RequirementsEuropean Low Voltage Directive EMC and Safety Compliance120 Register Default Command DefaultAustralian Modem Warning Notice 121122 Use of Supplied Power Transformer123 New Zealand Telecom Warning Notice124 Technical Specifications Mode of Operation Error CorrectionIntelligent Features Command BufferITU-T Carrier FrequenciesAT&T V.32 terbo ITU-T V.32bis/V.32 Carrier Frequencies 22bis/V.22 orBell 103/113 ConnectorsFax Carrier FrequenciesIndicators DiagnosticsPower Requirements Power Consumption130 131 Loopback TestsLocal Analog Loopback Test V.54 Loop Test procedure132 133 Remote Digital Loopback Test V.54 Loop134 User Guide Test procedure135 Local Digital Loopback Test V.54 Loop136 Warranty, Service, and Technical Support Limited Warranty137 Technical Support ServiceMulti-Tech Systems, Inc Woodale Drive Mounds View, MN Attn RepairMulti-Tech BBS Online Warranty Registration139 If you don’t know the file name If you know the file name140 141 About the InternetAbout CompuServe About the Multi-Tech Fax-Back Service142 Upgrade Procedures Upgrade Overview143 Identify the Current Firmware Version Identify the Modem FirmwareMulti-Tech Web Site 144145 Multi-Tech BBS146 Download the Upgrade FileClear Your Stored Paramenters Extract the Upgrade Files147 148 Upgrade the Modem’s Firmware149 Flashwin150 Restore Your ParametersIndex Page 153 Index47, 70 15420, 21 155156 Enable Synchronous Buffered Mode157 Modem Port Flow Control command20, 55 158159 Store Telephone Number command160 User Guide