4. Modem Connection Problems

This section is intended to help you diagnose problems specific to modem-based connections over a telephone line.

Do you get "Can't communicate with modem" messages?

If the answer is YES then you can problem is most likely to be with your modem installation. Check that all the modem cables are firmly in place and, if it's an external modem, that it's powered on. On Microsoft Windows systems, the System Control Panel's Device Manager can help you diagnose problems. The PC Card Control Panel can also indicate the correct recognition of PCMCIA ("credit-card" style) modems in notebook machines.

Do you get "No Dial Tone" messages?

If the answer is YES then you can problem is most likely to be with a faulty or incorrect phone cable or other hardware problem. Try using a different phone cable, or a different phone socket.

Does your modem dial but never connects properly?

If the answer is YES, i.e. you hear dialling and you never get as far as hearing the modem "warbling" as it negotiates with the server, then you may have an incorrect modem setting, for example a wrong telephone number or prefix code.

Does your modem connect, but fails when trying to authenticate your username/password?

If the answer is YES then the problem is most likely to be a problem with your dial-up password. If this is stored in your local configuration (i.e. you're not prompted to enter it each time) then check the stored setting - see the separate web page at www.oucs.ox.ac.uk/email/config/passwords/.

Does your modem connect successfully to the server but soon gets disconnected?

If the answer is YES then there may some specific extra configuration or adjustment needed for your particular modem.

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