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If your modem is reporting no dial tone then the likely cause may be:
•The modem is not correctly connected to the wall jack
•Your phone service has a special feature, such as a messaging feature that uses a stuttered dial tone to alert you to new messages
•The phone cord connecting the modem to the wall jack is either damaged or the connections are not secure
•The wall jack is not 'live'. Check this my plugging in a telephone to the jack and see if you can hear a dial tone
If the no dial tone report by the modem is in error and you are certain that your modem is connected properly, you can check the 'blind dial' option in the modem configuration settings to resolve the problem. This will cause the modem to ignore the absence of a dial tone when dialing the fax number.