Introduction

Using your Modem

Connecting to your Internet Provider

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Troubleshooting

Glossary

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I can't connect to my Internet Service Provider (ISP) or I am receiving Dial-Up Networking errors

If you are using Microsoft Windows Dial-up Networking to connect to your Internet Service Provider (ISP)


You may encounter some errors when attempting to connect using Dial-Up Networking. Most of the error messages you will see should be self explanatory. However, there may be occasions when the error message is not truly indicative of the problem. If you are receiving one of the error messages (reference the number displayed on the message to the one here) listed below then select that item to view additional help.

You may need to contact your Service Provider. If you are attempting to connect with the wrong configuration values, you will receive a Dial-Up Networking error. You will need to contact your Service Provider to obtain the correct configuration values, and you may need to contact Technical Support to reconfigure the modem.

Windows 98/ME

Error 602
Error 645
Error 650
Error 691

Windows 98/ME

Error 602:

This error message may also be displayed under the following circumstances.

  1. You may already have two active connections made through the Modem. This is the maximum amount you can have.
  2. Your physical connection to the DSL line is down. This can be verified by looking at the ADSL LED on the modem.

Error 645:

This error message may also be displayed under the following circumstances.

  1. The Username and/or Password you entered is not the one for the Computer you are dialing.
  2. Check if Require data encryption is checked in the Server Types property screen for the Dial-up connection. If it is, uncheck it and try the call again. The computer you are dialing may not support sending and receiving encrypted data.

Error 650:

This error message may also be displayed under the following circumstances.

  1. Your VPI and/or VCI value may be incorrect. Please verify and change them if necessary.
  2. The computer you are dialing or your ISP connection is currently down. Check with your Service Provider.
  3. You are using the PPP over ATM version ADSL Modem Software, and you should be using the Ethernet (Bridge/PPP over Ethernet) or Ethernet (Routed) version. Check with your Service Provider to verify you are using the correct software. If you are using the wrong software, uninstall the current modem software and reinstall the correct software.

Error 691:

This error message may also be displayed under the following circumstances.

  1. The Username and/or Password you entered is not correct for the connection you are dialing to.
  2. You may be trying to make a second Dial-Up connection with your Modem. If so, please verify that each connection is using a separate Line. That is, one connection should be using 3Com PCIA DSL Line 0 and the other should be using 3Com PCIA DSL Line 1. This can be verified under the General property screen for the Dial-up connection.