Multitech MT5634ZBA-USB manual Modem Disconnects While Online, Modem Cannot Connect When Answering

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MT5634ZBA-USB User Guide

The Modem Disconnects While Online

•If you have Call Waiting on the same phone line as your modem, it can interrupt your connection when someone tries to call you. If you have Call Waiting, disable it before each call. In most telephone areas in North America, you can disable Call Waiting by preceding the telephone number with *70 (check with your local telephone company).

You can automatically disable Call Waiting by including the disabling code in the modem’s dial prefix (e.g., ATDT*70,—note the comma, which inserts a pause before the number is dialed).

•If you have extension phones on the same line as your modem, you or someone else can interrupt the connection by picking up another phone. If this is a frequent problem, disconnect the extension phones before using the modem, or install another phone line especially for the modem.

•Check for loose connections between the modem and the computer and the telephone jack.

•You might have had a poor connection because of line conditions or the problem might have originated on the other end of the line. Try again.

•If you were online with a BBS or an online service like CompuServe, it might have hung up on you because of lack of activity on your part or because you exceeded your time limit for the day. Try again.

The Modem Cannot Connect When Answering

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

The Modem Doesn’t Work with Caller ID

•Caller ID information is transmitted between the first and second rings, so if autoanswer is turned off (S0=0) or if the modem is set to answer after only one ring (S0=1), the modem will not receive Caller ID information. Check your initialization string, and if necessary change it to set the modem to answer after the second ring (S0=2).

•Make sure that you have Caller ID service from your telephone company.

Fax and Data Software Can’t Run at the Same Time

Communications devices can be accessed by only one application at a time. You may be able to have data and fax communication applications open at the same time, but they cannot use the same modem at the same time.

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Contents User Guide Record of Revisions TrademarksContents Index Introduction and Description Introduction Product DescriptionUniversal Serial Bus USB MT5634ZBA-USB User GuideWhat Is in Your Modem Package? Introduction and DescriptionMT5634ZBA-USB User Guide Quick Start Safety Warnings What You Will NeedWe supply You supplyAssemble the Modem Quick StartInstall the Software Connect the Modem to Your System Line ConnectionPhone Connection USB ConnectionSelect the Modem Test Your ModemFeatures Data FeaturesWhat Can You Do with Your Modem? Fax Required EquipmentComputer Telephone LineConnecting to the Computer USB Connecting to the Telephone Line LineConnecting to a Telephone Set Phone ConnectionsFront Panel Front panelMT5634ZBA-USB User Guide AT Commands, S-Registers and Result Codes AT Commands AT Command Summary Command DS=n Dial Stored Telephone Number Echo Command Mode CharactersMonitor Speaker Volume Echo Online Data CharactersMonitor Speaker Mode Return Online to Data ModeResult Codes Enable/Disable Command Sr=n Set Register ValueMT5634ZBA-USB User Guide Command Vn Result Code Format Command Xn Result Code SelectionCommand Yn Long Space Disconnect Modem ResetLoad Factory Settings Command &Gn V.22bis Guard Tone ControlCommunications Mode Asynchronous Communications ModeMT5634ZBA-USB User Guide Command &Tn V.54 Test Commands Display Current SettingsCommand &Wn Store Current Configuration Select Stored Configuration for Hard ResetError Correction Mode Selection Modem Port Flow ControlData Buffer Control Break ControlInactivity Timer Command %Cn Data Compression ControlCommand %DCnAT Command Control Protocol Result CodeCommand %En Fallback and Fall Forward Control Enter Setup PasswordCommand #S=x Store Setup Password Command%%%ATCRRemote Configuration Escape SequenceRegisters Rates K56flex Rates S37S38 S42 S43S48 S89Result Codes Terse Verbose DescriptionMT5634ZBA-USB User Guide Remote Configuration Changing the Setup Password Basic ProcedureSetup Remote Configuration Changing the Remote Escape CharacterMT5634ZBA-USB User Guide Troubleshooting None of the Indicators Light Modem Does Not Respond to CommandsTroubleshooting Modem Dials But Cannot ConnectModem Cannot Connect When Answering Modem Disconnects While OnlineModem Doesn’t Work with Caller ID Fax and Data Software Can’t Run at the Same TimeAppendixes Appendix a Regulatory Compliance FCC Regulations for Telephone Line InterconnectionClass B Statement Industry CanadaCanadian Limitations Notice FAX Branding StatementNew Zealand Telecom Warning Notice European DirectivesInternational Modem Restrictions Appendix B Technical Specifications Connectors Carrier FrequenciesITU-T ITU-T V.32bis/V.32 Carrier FrequenciesDiagnostics IndicatorsDimensions WeightAppendix C Loopback Tests IntroductionFigure C-1. Local analog loopback test Test Procedure Local Analog Loopback Test V.54 LoopRemote Digital Loopback Test V.54 Loop Appendix C Loopback TestsFigure C-3. Local digital loopback test Test Procedure Local Digital Loopback Test V.54 LoopAppendix D Warranty, Service, and Technical Support Limited WarrantyOnline Warranty Registration ServiceTechnical Support Multi-Tech BBSTo Log on to the Multi-Tech BBS To Download a FileAbout the Multi-Tech Fax-Back Service About the InternetIndex Index MT5634ZBA-USB User Guide
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