Dial-Up Error Codes

The following information shows a list of common Dial-up Error Codes and how to resolve them.

Common Initilisation Strings

619: The port is disconnected.
629: The port was disconnected from the remote computer.
630: Modem not responding
633: The port is already in use or is not configured for Remote Access dialout.
645: Internal authentication error.
650: The remote access server is not responding.
666: Your modem is not functioning.
676: The line is busy.
678: There is no answer.
680: There is no dial tone.
691: Invalid username/password
692: Modem not responding.
718: PPP timeout
720: Could not negotiate a compatible set of network protocols (9x/ME)
720: No PPP control protocols configured (NT/2K/XP)
721: Remote PPP peer is not responding
732: The PPP negotiation is not converging
745: An essential file is missing
777: The connection attempt failed because the modem on the remote computer is out of order
797: The modem could not be found

Resolutions for Dial-Up Errors

Arrow 619: The port is disconnected.

1. Reboot the computer.
2. Remove and recreate the connection.
3. Reinstall modem driver.

Arrow 629: The port was disconnected from the remote computer.

If error comes up just after the customer clicks connect WITHOUT even dialling:
1. Add on , before the POP number.
2. Untick "Use Area Code and Dialling Properties".
3. Check connection is using the correct modem driver.
4. Re-install modem driver.
5. If modem is external, try adding as Windows standard modem driver on correct COM port.
6. Double check again that connection is using correct modem driver.

No dial tone but modem dials digits then long pause without handshake:
1. Verify POP number is correct and add , before and after the number.
2. Check chord is plugged into the line socket of the back of the modem and other end is in the wall.
3. Check the phone system customer is using, remove all phone double adaptors, extension cords, other phones & faxes (even if in other rooms of the house but using the same phone number).
4. Attach a handset to the internet line & attempt to dial the POP with that handset. If customer hears a non-standard dial tone, clear message bank messages on the line. If customer dials the POP & does not hear the fax modem sound on the other end, refer to telco provider support. If customer hears MODEM tones, go to next step.
5. Re-install modem driver.
6. Most likely modem hardware problem.

If the modem dials then handshakes:
1. Remove other devices from phone line.
2. Drop to V34 strings.
3. Check line with handset for audible distortions (if YES, refer to phone faults).
4. Re-install modem driver.
5. Re-install communications.
6. Drop to V34 again (as it's a new driver). *this is more caused by a phone line error, I would suggest trying another phone cable or making sure ph line is plugged into line side of modem.

Arrow 630: Modem not responding.

(Try to test dial after each step. If one line, then it should get 680 if fixed).

1. Check physical connections, modem plugged in, lights on, etc. If external modem, power cycle it too.
2. Check connection is using the correct modem driver.
3. Check modem for any strings present. If there are, remove them.
4. Reboot the PC.
5. Re-install modem.
6. Reboot the PC again.
7. Most likely modem hardware problem.

Arrow 633: The port is already in use or is not configured for Remote Access dialout.

1. Reboot the PC.
2. Check that the modem is not actually in use (try using modem diagnostics, and make sure no other applications are using the modem such as fax, voice software, etc). pick up phone line
3. Check connection is using the correct modem driver.
4. Re-install modem.

Arrow 645: Internal authentication error.

1. Check server tab to see if there is a tick in "encrypted password" (9x/ME) or "Typical: Allow unsecured password" (XP).
2. Reinstall communications.

Arrow 650: The remote access server is not responding.

1. Recreate the connection and also remove other devices from the phone line.
2. Re-install modem.
3. Re-install communications.
4. Drop modem sped down to V34.

Arrow 666: Your modem is not functioning.

(Try to test dial after each step. If one line, then it should get 680 if fixed).

1. Check connection is pointing to correct modem. (check modem country settings - should be Australia)
2. Restart the PC.
3. For external modems, also power cycle it.
4. Re-install modem.
5. If receiving error 630 or 666, most likely modem hardware problem.

Arrow 676: The line is busy.

1. Check connection for correct POP number and untick "Use Area Code and Dialling Properties".
2. Check connection is using the correct modem driver.
3. Re-install modem.
4. Re-create the connection.
5. Use modem string ats11=125 (unless it's Swann Speed Demon then obtain latest drivers).

Arrow 678: There is no answer.

" No dial tone but modem dials: see error 680.
" If the modem dials then handshakes: see error 630.

Arrow 680: There is no dial tone.

1. Check cables, unplug and replug the cables, ensuring that the modem phone line cable is plugged into LINE and not PHONE. Also check that it hasn't been plugged into the NETWORK card.
2. Recreate connection making sure it is pointing to the correct driver.
3. Attach a handset to the internet line & attempt to dial the POP with that handset. If customer hears a non-standard dial tone, clear message bank messages on the line. If customer dials the POP & does not hear the fax modem sound on the other end, refer to telco provider support. If customer hears MODEM tones, go to next step.
4. Untick "Wait for Dial tone Before Dialling". If and only if the modem is a Connexant internal modem or a modem made for overseas connections, then enter an X3 string into the modem string.
5. Remove extra devices from the internet phone line between customer's modem and the wall socket. Also unplug any other extra devices such as other phones or faxes that share the number in the house.
6. Check dialling properties in modems that all settings are set to Australia and that the modem is not dialling with area code and country code.
7. Reinstall modem driver.

Arrow 691: Invalid username/password

1. Check if account is active and/or has time remaining.
2. Check connection is dialling the correct POP number.
3. Make sure customer is entering the correct username/password and in the correct case.
4. Recreate the connection.

Arrow 692: Modem not responding.

(Try to test dial after each step. If one line, then it should get 680 if fixed).

1. Check physical connections, modem plugged in, lights on, etc. If external modem, power cycle it too.
2. Check connection is using the correct modem driver.
3. Check modem for any strings present. If there are, remove them.
4. Reboot PC.
5. Re-install modem.
6. Reboot PC again.
7. Most likely modem hardware problem.

Arrow 718: PPP timeout

1. Recreate the connection.
2. Check the phone system customer is using. Remove extra devices from the internet phone line.
3. Add V34 string to modem.
4. Re-install communications.
5. If the modem is external, try adding a Windows standard modem driver on correct COM port.

Arrow 720: Could not negotiate a compatible set of network protocols (9x/ME)

" If Windows 95, need to update DUN to version 1.3 (four tabs across top of connection properties).
" If 98/ME, reinstall communications.

Arrow 720: No PPP control protocols configured (NT/2K/XP)

1. Recreate the connection.
2. Check Network tab of connection only has Client for Microsoft Networks, TCP/IP and OoS Packet Scheduler (XP only) ticked.
3. Untick all settings under PPP settings.
4. Remove all other devices from the phone line.
5. Drop modem to V34.
6. Check line with handset for audible distortions.
7. Reinstall modem driver.

Arrow 721: Remote PPP peer is not responding

1. Recreate the connection.
2. Add , before and after the POP number.
3. Check connection is using the correct modem driver.
4. Drop modem to V34.
5. Reinstall modem driver.

Arrow 732: The PPP negotiation is not converging

1. Recreate the connection.
2. Check the new connection and that TCP/IP is the only protocol bound in the network stack. If no, untick any other ones.
3. Remove other devices from the phone line.
4. Drop modem to V34.
5. Check line with handset for audible distortions.
6. Reinstall modem driver.

Arrow 745: An essential file is missing

1. Reinstall communications.
2. If no success, major OS problem.

Arrow 777: The connection attempt failed because the modem on the remote computer is out of order

" If customer has just installed modem for first time or upgraded to 2K/XP from a previous OS, then they need new drivers. Suggest can try to install a Windows standard modem driver temporarily.
" If 2K/XP then reinstall the modem driver.
" If still unsuccessful then treat this issue as a problem with their hardware/software.

Arrow 797: The modem could not be found

1. Reboot the computer. If the modem is external, power cycle it too.
2. Check that no other applications are using the modem such as fax, voice software, etc.
3. Reinstall the modem driver.
4. Most likely modem hardware problem.