Dial Up Connection Support

There are many problems you my encounter when using a dial-up connection. Usually the issue will be with the actual connection. The most difficult to troubleshoot is by far frequent disconnects, or unexpected disconnects, we wrote a separate article covering just that issue. This documents covers not being able to connect at all. In the vast majority of cases you will receive an error code. With Windows the error will be a three digit number that starts with a 6 or 7, with 691 being the most common.

If you need an further help, you can call us 24/7 for technical support at 1-888-NATIONW (1-888-628-4669)

Common Problems and Errors

Most problems with connecting are do to a configuration error. The easiest way to fix this issue it to rebuild the dial-up connection. This save time and confusion in checking the many settings involved, as the default Windows and Mac settings will work with our network. For Windows users, see “Rebuilding you Dial-up connection, below. Mac users should check their settings (see setup instructions for your particular Mac. )

Error 691
A 691 error indicates that your username or password is incorrect. Retype both your username and password for the dial-up connection. With Windows XP it is usually best to rebuild the connection, and if checking the username and password does not work, try rebuilding your connection. (See Below)

Error 678
Error 678 can be an issue with your drivers, but many times it can be that the computer is dialing the wrong number. Check the number that the computer is dialing, or rebuild the connection.

Error 680
Error 680 indicates that the modem is not hearing a dial tone. Try checking the connection, making sure that the phone cord is connected to the wall jack and into the computer with no splitters, surge protectors, or filters of any kind. The phone cord should be plugged into the jack on the back of the computer that usually is labeled “line.” You can also test the wall jack by plugging a phone into it and listening for a dial tone. If you hear a dial tone, it is likely, especially if you have had thunder storms in your area recently, that there is something wrong with the modem.

Error 676
Error 676 indicates that the line is busy. Usually this like 678 indicates that you might be dialing the wrong number. Check the number that the computer is dialing, or rebuild the connection. This error can also occur if you have voice-mail. If you have voice mail try adding two comas in front of the phone number to have the modem wait till the “stutter” tone is finished.

Rebuilding your Dial-up connection

Mac users do not need, or are able to “rebuild” their connection. For Windows users, the easiest way to rebuild your connection is to open up Internet Explorer, go to “Tools” on the top, and select “Internet Options.” This will bring you to the Internet Options window. On the top you will see several “Tabs”, click on the one labeled “Connection.”

To remove the dial-up connection, click on the name of the connection in the dial-up box. Once it is highlighted, click on the “Remove button.” Once the connection has been removed you can click on the “Setup” button and follow along with the New Connection Wizard, or follow the setup procedure with “Inetwiz.”

For Advanced users, you can go to http://modemhelp.org, for more information on troubleshooting dial-up connection problems.

List of Windows DUN error codes.

• 600 An operation is pending.
• 601 The port handle is invalid.
• 602 The port is already open.
• 603 Caller's buffer is too small.
• 604 Wrong information specified.
• 605 Cannot set port information.
• 606 The port is not connected.
• 607 The event is invalid.
• 608 The device does not exist.
• 609 The device type does not exist.
• 610 The buffer is invalid.
• 611 The route is not available.
• 612 The route is not allocated.
• 613 Invalid compression specified.
• 614 Out of buffers.
• 615 The port was not found.
• 616 An asynchronous request is pending.
• 617 The port or device is already disconnecting.
• 618 The port is not open.
• 619 The port is disconnected.
• 620 There are no endpoints.
• 621 Cannot open the phone book file.
• 622 Cannot load the phone book file.
• 623 Cannot find the phone book entry.
• 624 Cannot write the phone book file.
• 625 Invalid information found in the phone book.
• 626 Cannot load a string.
• 627 Cannot find key.
• 628 The port was disconnected.
• 629 The port was disconnected by the remote machine.
• 630 The port was disconnected due to hardware failure.
• 631 The port was disconnected by the user.
• 632 The structure size is incorrect.
• 633 The port is already in use or is not configured for Remote Access dialout.
• 634 Cannot register your computer on the remote network.
• 635 Unknown error.
• 636 The wrong device is attached to the port.
• 637 The string could not be converted.
• 638 The request has timed out.
• 639 No asynchronous net available.
• 640 A NetBIOS error has occurred.
• 641 The server cannot allocate NetBIOS resources needed to support the client.
• 642 One of your NetBIOS names is already registered on the remote network.
• 643 A network adapter at the server failed.
• 644 You will not receive network message popups.
• 645 Internal authentication error.
• 646 The account is not permitted to log on at this time of day.
• 647 The account is disabled.
• 648 The password has expired.
• 649 The account does not have Remote Access permission.
• 650 The Remote Access server is not responding.
• 651 Your modem (or other connecting device) has reported an error.
• 652 Unrecognized response from the device.
• 653 A macro required by the device was not found in the device .INF file section.
• 654 A command or response in the device .INF file section refers to an undefined macro
• 655 The macro was not found in the device .INF file section.
• 656 The macro in the device .INF file section contains an undefined macro
• 657 The device .INF file could not be opened.
• 658 The device name in the device .INF or media .INI file is too long.
• 659 The media .INI file refers to an unknown device name.
• 660 The device .INF file contains no responses for the command.
• 661 The device .INF file is missing a command.
• 662 Attempted to set a macro not listed in device .INF file section.
• 663 The media .INI file refers to an unknown device type.
• 664 Cannot allocate memory.
• 665 The port is not configured for Remote Access.
• 666 Your modem (or other connecting device) is not functioning.
• 667 Cannot read the media .INI file.
• 668 The connection dropped.
• 669 The usage parameter in the media .INI file is invalid.
• 670 Cannot read the section name from the media .INI file.
• 671 Cannot read the device type from the media .INI file.
• 672 Cannot read the device name from the media .INI file.
• 673 Cannot read the usage from the media .INI file.
• 674 Cannot read the maximum connection BPS rate from the media .INI file.
• 675 Cannot read the maximum carrier BPS rate from the media .INI file.
• 676 The line is busy.
• 677 A person answered instead of a modem.
• 678 There is no answer.
• 679 Cannot detect carrier.
• 680 There is no dial tone.
• 681 General error reported by device.
• 682 ERROR WRITING SECTIONNAME
• 683 ERROR WRITING DEVICETYPE
• 684 ERROR WRITING DEVICENAME
• 685 ERROR WRITING MAXCONNECTBPS
• 686 ERROR WRITING MAXCARRIERBPS
• 687 ERROR WRITING USAGE
• 688 ERROR WRITING DEFAULTOFF
• 689 ERROR READING DEFAULTOFF
• 690 ERROR EMPTY INI FILE
• 691 Access denied because username and/or password is invalid on the domain.
• 692 Hardware failure in port or attached device.
• 693 ERROR NOT BINARY MACRO
• 694 ERROR DCB NOT FOUND
• 695 ERROR STATE MACHINES NOT STARTED
• 696 ERROR STATE MACHINES ALREADY STARTED
• 697 ERROR PARTIAL RESPONSE LOOPING
• 698 A response keyname in the device .INF file is not in the expected format.
• 699 The device response caused buffer overflow.
• 700 The expanded command in the device .INF file is too long.
• 701 The device moved to a BPS rate not supported by the COM driver.
• 702 Device response received when none expected.
• 703 ERROR INTERACTIVE MODE
• 704 ERROR BAD CALLBACK NUMBER
• 705 ERROR INVALID AUTH STATE
• 706 ERROR WRITING INITBPS
• 707 X.25 diagnostic indication.
• 708 The account has expired.
• 709 Error changing password on domain.
• 710 Serial overrun errors were detected while communicating with your modem.
• 711 RasMan initialization failure. Check the event log.
• 712 Biplex port is initializing. Wait a few seconds and redial.
• 713 No active ISDN lines are available.
• 714 Not enough ISDN channels are available to make the call.
• 715 Too many errors occurred because of poor phone line quality.
• 716 The Remote Access IP configuration is unusable.
• 717 No IP addresses are available in the static pool of Remote Access IP addresses.
• 718 PPP timeout.
• 719 PPP terminated by remote machine.
• 720 No PPP control protocols configured.
• 721 Remote PPP peer is not responding.
• 722 The PPP packet is invalid.
• 723 The phone number including prefix and suffix is too long.
• 724 The IPX protocol cannot dial-out on the port because the computer is an IPX router.
• 725 The IPX protocol cannot dial-in on the port because the IPX router is not installed..
• 726 The IPX protocol cannot be used for dial-out on more than one port at a time.
• 727 Cannot access TCPCFG.DLL.
• 728 Cannot find an IP adapter bound to Remote Access.
• 729 SLIP cannot be used unless the IP protocol is installed.
• 730 Computer registration is not complete.
• 731 The protocol is not configured.
• 732 The PPP negotiation is not converging.
• 733 The PPP control protocol for this network protocol is not available on the server.
• 734 The PPP link control protocol terminated..
• 735 The requested address was rejected by the server..
• 736 The remote computer terminated the control protocol.
• 737 Loopback detected..
• 738 The server did not assign an address.
• 739 The remote server cannot use the Windows NT encrypted password.
• 740 The TAPI devices configured for Remote Access failed to initialize or were not installed correctly.
• 741 The local computer does not support encryption.
• 742 The remote server does not support encryption.
• 743 The remote server requires encryption.
• 744 Cannot use the IPX net number assigned by the remote server. Check the event log.
• 752 A syntax error was encountered while processing a script.

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