Multi-Tech Systems MT5634MSV manual Modem4Cannot Connect When Answering, Data Is Being Lost

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MessageSaver User Guide

The Modem4Cannot Connect When Answering

Autoanswer might be disabled. Turn on autoanswer in your datacomm program or send the command ATS0=1 (ATS0=2 if you have Caller ID service) to your modem in terminal mode.

File Transfer4Is Slower Than It Should Be

You might have an older UART. For best throughput, install a 16550AFN UART or a Multi-Tech ISI serial port card. See the “Quick Start” chapter for information

4on how to identify your UART.

If you are running under Windows 3.1 and have a 16550AFN UART, you must replace the Windows serial driver, COMM.DRV, to take full advantage of the UART’s speed.

If you are using a slow transfer protocol, such as Xmodem or Kermit, try Zmo-

4dem or Ymodem/G instead.

Is your line noisy? If there is static on your line, the modem has to resend many blocks of data to insure accuracy. You must have a clean line for maximum

4speed.

Are you downloading a compressed file with MNP 5 hardware compression en- abled? Since hardware data compression cannot compress a file already compressed by an archiving program, the transfer can be marginally slower with

4data compression enabled than with it disabled.

Does your Internet service provider (ISP) use the same 56K protocol as your mo- dem? The default setting of your modem is to connect using either the K56flex or the V.90 protocol, depending on which one the ISP modem is using. If your ISP uses the X2 protocol, the maximum speed you will be able to connect at is 33,600 bps. Check with your ISP to see which protocols it supports, and check the Multi-

4Tech Web site for the latest developments in V.90.

Try entering the &V1 command to display information about the last connection, making a screen print of the connection statistics, and checking for parameters that might be unacceptable.

Data Is Being Lost

If you are using data compression and a high speed serial port, set the serial port

4baud rate to four times the data rate.

Your UART might not be reliable at serial port speeds over 9600 bps or 19,200 bps. Turn off data compression, reset your serial port speed to a lower rate, or

4replace your serial port with a faster one.

Make sure the flow control method you selected in software matches the method selected in the modem. If you are using the modem with a Macintosh, you might have the wrong cable for hardware flow control.

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Contents User Guide FCC Part User Guide Record of Revisions Quick Start IntroductionMessageSaver Operation AT Commands, S-Registers & Result Codes Remote ConfigurationSolving Problems PhoneToolsAppendix a Regulatory Compliance Appendix C Loopback TestsAppendix D Warranty, Service, and Technical Support Appendix E Upgrade ProceduresIntroduction Introduction Product Description What Is in Your Modem Package? How to Get a Copy of Your User Guide Related ManualsMessageSaver User Guide Quick Start Safety Warnings IntroductionWhat You Will Need We supplySelect Stereo or Mono Speaker Mount the FeetOpening the Modem Changing the Speaker Jumper Location of speaker jumperRS232 Connection Connect the Modem to Your SystemLine Connection Power Connection Power-On TestPhone Connection Microphone ConnectionAdding the Modem to Windows Install the Modem in WindowsRemoving Your Old Modem from Windows Install and Configure Your Software Call the Multi-Tech BBS Windows HyperTerminal Windows Terminal Send a Fax Microsoft FaxSelect Start Programs Accessories Fax Compose new fax ReferencesMessageSaver User Guide MessageSaver Operation PhoneTools Features Independent Mode FunctionsRecording and Downloading an Announcement MessageSaver OperationIndependent Mode Operation in PhoneTools Independent Mode Configuration Dialog BoxIndependent Mode Control Dialog Box Independent Mode Control dialog boxIndependent Mode Operation Using the Front Panel Control ButtonsIndicator Lights Adjusting Speaker Volume Answering a Call with the SpeakerphonePlaying Voice Messages Stopping the Play of Voice MessagesUsing the MessageSaver in Speakerphone Mode Remote ControlControlling the MessageSaver Remotely Activating Independent Mode Remotely Remote Control KeysAT Commands Registers Result Codes AT Commands AT Command Summary Echo Command Mode Characters DS=y Dial Stored Telephone NumberEcho Online Data Characters Hook ControlMonitor Speaker Volume Monitor Speaker ModeReturn Online to Data Mode Modulation HandshakeResult Codes Enable/Disable Set Register ValueSr? Read Register Value Tone DialingModem Reset Long Space DisconnectAuto Retrain Data Carrier Detect DCD ControlLoad Factory Settings Communications ModeAsynchronous Communications Mode 22bis Guard Tone ControlTest Commands Display Current SettingsStore Current Configuration Select Stored Configuration for Hard Reset\An \Bn Transmit Break\Gn Modem Port Flow Control \Jn Data Buffer Control\Tn Inactivity Timer \Nn Error Correction Mode Selection\Qn Flow Control Selection DCn AT Command Control \Vn Protocol Result Code\Xn XON/XOFF Pass-Through Data Calling ToneCommand +ES=n Enable Synchronous Buffered Mode #Sx Enter Setup Password#S=x Store Setup Password Command +++ATCR Escape SequenceRegister Unit Range Default Description RegistersRegister Unit Range Default Description S37 Register Unit Range Default Description S42 Result Codes Terse Verbose DescriptionBlacklist Full Remote Configuration Setup Basic ProcedureChanging the Setup Password Changing the Remote Escape Character MessageSaver User Guide Solving Problems None of the Indicators Light Modem Does Not Respond to Commands Modem Dials But Cannot Connect Modem4Disconnects While Online File Transfer4Is Slower Than It Should Be Modem4Cannot Connect When AnsweringData Is Being Lost Modem4Doesn’t Work with Caller ID There Are Garbage4 Characters on the MonitorFax and Data4Software Can’t Run at the Same Time MessageSaver User Guide PhoneTools Installing PhoneTools Phone Module Using PhoneTools’ Status BarMaking a Phone Call Using the Speakerphone Making Quick Dial EntriesVoice Module Setting up AnswerphoneActivating and Deactivating Answerphone Setting Up the Answer Only Mode Setting Up the Answer/Record ModeListening to Received Messages from a Remote Phone Listening to Received Messages in PhoneToolsRecording an Announcement Changing Recording ParametersConfiguring and Controlling Independent Mode Operation Independent ModeHow Does It Work? Activating and Configuring Independent Mode Selecting an AnnouncementIndependent Mode Managing Stored Documents InboxFax Module Faxing a Document from a Windows ApplicationFaxing a File Directly from PhoneTools Sending a CoverAdding a Logo to the Cover Viewing and Printing FaxesInbox and Outbox Management Inbox ManagementOutbox Management Phone Book Creating New RecordsImporting Existing Records Selecting RecordsUsing the Phone Book for Dialing Terminal Emulation Module Starting a Modem ConnectionUploading Files to a Remote System Capturing Information to DiskData File Transfer Sending a Data File AutomaticallyReceiving a Data File Automatically Appendixes Appendix a Regulatory Compliance FCC Part 68 TelecomFax Branding Statement Regulatory ComplianceInternational Modem Restrictions Canadian Limitations NoticeCommission Decision CTR21 EMC and Safety Compliance New Zealand Telecom Warning NoticeMessageSaver User Guide Appendix B Technical Specifications Carrier Frequencies Frequency Stability MessageSaver User Guide Test procedure Local Analog Loopback Test V.54 LoopRemote Digital Loopback Test V.54 Loop Figure C-2. Remote digital loopback testLocal Digital Loopback Test V.54 Loop Figure C-3. Local digital loopback testMessageSaver User Guide Limited Warranty ServiceTechnical Support Online Warranty RegistrationMulti-Tech BBS About the Internet About the Multi-Tech Fax-Back Service Modem AccessoriesSupplyNet Online Ordering Instructions Upgrade Overview Identify the Modem FirmwareMulti-Tech Web Site Identify the Current Firmware VersionMulti-Tech BBS Extract the Upgrade Files Download the Upgrade FileClear Your Stored Paramenters Upgrade the Modem’s Firmware Restore Your ParametersIndex Symbols Index 106
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