3Com 1.024.1644-00 manual Troubleshooting

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Troubleshooting

56K Voice Faxmodem Internal - User’s Guide

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Contents 56K Voice Faxmodem Internal Page Table of Contents Page Table of Contents Page Welcome to 56K*Information Access Product Features Back Channel Link Rates Upload Speeds Flash ROM Upgradable Control Panel Determining Available ResourcesClick Properties Determining Your Version of WindowsWindows 95 version How to Prepare for Plug and Play Installation Plug and Play InstallationSerial Number How to Insert the Modem into the ComputerPage Page Page Page Moving Through the New Hardware Found Screens Installing Modem Drivers With Windows Versions 950 and 950aPage COM Port Click More Info… Using the Update Device Driver Wizard Screens Installing Modem Drivers With Windows Version 950bPage COM Port Click More Info… Word about COM Ports and IRQs How to Change the Modem’s Settings Page How to Insert the Modem into the Computer Page Page Page Page Restart Now Windows Software InstallationInitialisation String Type of ModemFlow Control Read This First Possible SolutionTroubleshooting Possible Solution Possible Solution Possible Solution Troubleshooting Possible Solution Support Resources Support Resources Are You Still Having Problems?Application Analogue signalsAnswer mode Analogue loopbackGlossary Bit rate Glossary Auto dialBaud rate Binary digit bitClass 1 Data modeGlossary Character Characters per second CPSGlossary DefaultDetect phase Digital signalsFlow control Glossary Error controlFax mode FacsimileOFF/ON hook Local echoModem Nonvolatile memory NvramProtocol Originate modeGlossary Online fallback/fall forward ParityTerminal Terminal modeSerial transmission Start/stop bitsSee online fall back/fall forward 22 bis27ter 32 bisYmodem G 42 bisXmodem YmodemTechnical Reference En Sets local echo Technical ReferenceITU-T answer sequence Dials the specified phone number, includes the followingMn Operates speaker Ln Controls speaker volume internals onlyTechnical Reference Hn Controls ON/OFF hook Displays the following informationVerbal codes Numeric codes11/RINGING Technical Reference Sets result code displayed, default isTechnical Reference Cn Controls Carrier Detect CD signal Resets modemDisplays a list of ampersand & commands An Enables/disables additional result code subsets see XnHn Sets Transmit Data TD flow control see also &Rn Fn Loads a read-only non-programmable factory configurationKn Enables/disables data compression Sets Guard Tone300 bps Sets pulse rotary dial make/break ratio No restrictions on the minimum speed for Yn Sets break handling Wn Writes current configuration to Nvram templates64 56K Voice Faxmodem Internal User’s Guide Registers Register Default FunctionBit Value Result Default FunctionS13 Technical Reference Register Default FunctionTimer S27 See the instructions for S13 S34 Bit +FCLASS=n Sets the mode of operation Fax Commands+FRH=n +FTH=nDisplayed As a number Words Description CE Compliance RegulatoryLimited Warranty