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DUNS Error 692 - Hardware failure in port or attached device. This error can occur if your modem is not properly installed, or for an external modem if the power to the modem is turned off. Verify the modem installation by checking Control Panel->Modems - driver and diagnostic (more info). The error...
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DUNS Error 678 - There is no answer. DUNS Error 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...
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DUNS Error 602 - The port is already open. If the port is already open, another application has control over the modem. This can sometimes occur with errant applications (poorly written software) not closing the port, or terminating abnormally. If this is the case, it may be necessary to re-boot the...
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721 - Remote PPP peer is not responding. This error may occur if there is a problem at the ISP. Disconnect, then dial back in. If error 721 persists: Try dialing into a different provider or access number if available Check the properties of, and/or create a new Dial-Up Connection. Re-install dial-up...
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680 - There is no dial tone. All versions of Windows are affected by this error. No dial tone: There are many possible causes of a No Dial Tone Error. First, try testing the modem's ability to detect dial tone and to dial by using HyperTerminal with the direct to COM port connect method - see Using...
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691 - Access denied because username and/or password is invalid on the domain. With all Windows versions - This error can occur if you use a bad username or password; remember in most instances the password is case-sensitive - you will not see the password, so if CAPS LOCK is not the way you expect it...