3Com 1.024.1644-00 manual Possible Solution

Page 40

Troubleshooting

POSSIBLE SOLUTION

You may have plugged your modem’s phone cord into the wrong jack on the modem. Make sure the phone cord is plugged into a jack labeled with the word TELCO (marked with a wall jack icon on externals).

POSSIBLE SOLUTION

You might have a bad phone cord connection to your modem. The phone cord should be plugged into the TELCO jack on the modem (marked with a wall jack icon on externals) and the wall phone jack. The phone cord should be no longer than 12 feet in length. Use the phone cord included with your modem if possible.

POSSIBLE SOLUTION

Your phone jack may have been wired incorrectly. Contact your telephone company. Ask them to make sure the tip and ring are on the inside pair of wires.

POSSIBLE SOLUTION

You may have devices between the modem and the phone jack. There should be no line splitters, fax machines, or other devices between the modem and the wall jack.

POSSIBLE SOLUTION

You may have a poor line connection. Place the call again. Calls are routed differently each time.

POSSIBLE SOLUTION

If you have voice mail, your dial tone may be altered because messages are waiting. Retrieve your voice mail messages to restore your normal dial tone.

POSSIBLE SOLUTION

Your software may not have auto answer enabled. Enable the auto answer feature. In your communication software’s terminal mode, type ATS0=1 and press ENTER.

You need to enable auto answer before every session unless you alter your software’s initialisation string to permanently enable auto answer.

34 56K Voice Faxmodem Internal - User’s Guide

Image 40

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 Determining Available Resources Control PanelClick Properties Determining Your Version of WindowsWindows 95 version Plug and Play Installation How to Prepare for Plug and Play InstallationHow to Insert the Modem into the Computer Serial NumberPage Page Page Page Installing Modem Drivers With Windows Versions 950 and 950a Moving Through the New Hardware Found ScreensPage COM Port Click More Info… Installing Modem Drivers With Windows Version 950b Using the Update Device Driver Wizard ScreensPage 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 Software Installation WindowsInitialisation String Type of ModemFlow Control Possible Solution Read This FirstTroubleshooting Possible Solution Possible Solution Possible Solution Troubleshooting Possible Solution Support Resources Are You Still Having Problems? Support ResourcesAnalogue signals Answer modeAnalogue loopback ApplicationGlossary Glossary Auto dial Baud rateBinary digit bit Bit rateData mode Glossary CharacterCharacters per second CPS Class 1Default Detect phaseDigital signals GlossaryGlossary Error control Fax modeFacsimile Flow controlLocal echo ModemNonvolatile memory Nvram OFF/ON hookOriginate mode Glossary Online fallback/fall forwardParity ProtocolTerminal mode Serial transmissionStart/stop bits Terminal22 bis 27ter32 bis See online fall back/fall forward42 bis XmodemYmodem Ymodem GTechnical Reference Technical Reference ITU-T answer sequenceDials the specified phone number, includes the following En Sets local echoLn Controls speaker volume internals only Technical Reference Hn Controls ON/OFF hookDisplays the following information Mn Operates speakerNumeric codes Verbal codesTechnical Reference Sets result code displayed, default is 11/RINGINGTechnical Reference Resets modem Displays a list of ampersand & commandsAn Enables/disables additional result code subsets see Xn Cn Controls Carrier Detect CD signalFn Loads a read-only non-programmable factory configuration Kn Enables/disables data compressionSets Guard Tone Hn Sets Transmit Data TD flow control see also &Rn300 bps Sets pulse rotary dial make/break ratio No restrictions on the minimum speed for Wn Writes current configuration to Nvram templates Yn Sets break handling64 56K Voice Faxmodem Internal User’s Guide Register Default Function RegistersDefault Function Bit Value ResultTechnical Reference Register Default Function S13Timer S27 See the instructions for S13 S34 Bit Fax Commands +FCLASS=n Sets the mode of operation+FRH=n +FTH=nDisplayed As a number Words Description Regulatory CE ComplianceLimited Warranty