DUNS ERROR 678 & 679

678 - There is no answer.
679 - Cannot detect carrier.

All versions of Windows - This error can occur if:
You are dialing the wrong number
There is a problem at your ISP or in the telephone network
Your modem is unable to handshake with remote modem before allotted time

Use modem's speaker to listen to connection attempt: Make sure it dials, and make sure you hear remote modem answer tones. 

Dial number with regular phone and make sure you hear remote modem answer tones.
Make sure correct phone # is dialed with DUNS - examine Modemlog. (If # dialed is not displayed, adding E1 to extra settings may help. Note also, you may have your telephony/connection settings such that long-distance digit is unintentionally being added to your phone number.)

If you hear your modem handshake, and 678 error appears at same time handshake sound ends, you may need to disable 56k or increase the 'Cancel Call if not connected' time in ControlPanel-> Modems-> Properties-> Connection

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