Fixing frequent disconnections isn't always as easy as changing settings. Here's a list of some things that you can check.

Line Noise

Your modem is trying to turn that noise into readable data. Because line noise is not data, you will probably run into an error, like "the computer you are dialing is not answering at this time." The first step is to take a phone connected to the data line you are using (if it is separate from your voice line), check for dial-tone and then punch in just one number in order to break the dial-tone. Any extra sound has the potential to cause problems. If you detect any noise, it's time for a call to your telephone service provider.

Weather Changes

Changes in temperature or weather can cause changes in the phone cables (expansion, retraction), which can drastically change the line quality temporarily. If you normally maintain connection but suddenly have problems after a recent rainstorm, it is probably a result of water on/in the lines resulting in hum, static and cross talk.

Excessive Retraining

Retraining is a process by which two connected modems keep adjusting their speeds without disconnecting. It is the same thing that occurs in the first few seconds when the two connecting modems are trying to "handshake". During this procedure no data is transferred.

Call Waiting

Call waiting must be disabled when you dial to the internet, or you will probably be disconnected when you are online and a second call comes in. This can be done by placing a *70, in front of your access number

Your Modem

The disconnects you're experiencing could be directly caused by your modem. Your modem may have been damaged during a thunderstorm unless it was unplugged from the wall completely. Some modems will still work after taking a lightning strike, but not at their maximum efficiency. If you're having frequent problems and have exhausted all other options, this may be the next thing to look at.

Your modem may need a driver/firmware upgrade. Your operating system needs the correct driver for your modem in order to communicate with it properly. If it is setup with the incorrect driver, you still may be able to connect, but your modem probably wont be operating as best it can, and you may experience problems such as low speeds and disconnections. Modem manufacturers release driver and firmware updates all the time to fix various bugs and improve performance. Check your modem manufacturer's website for information on finding out what version you have, and possibly upgrading.

Keep in mind that not all modems are equal. Some modems have a better track record at connectivity with Internet Service Providers than others. Some modems are no longer made, and are no longer supported or some manufacturers that made a modem may no longer be in business.

Related Articles

1. Adjusting Modem Volume
   
2. Why Do Pages Seem To Take So Long To Load?
   
3. What Determines My Connection Speed?
   
4. Why Does It Take More Than One Try To Connect?