Troubleshooting your DSL connection

Problems cause by household lighting

If the wiring in your home or office is new or otherwise free from problems, another thing to investigate is radio frequency interference (RFI) caused by household lighting. Some DSL modems are extremely sensitive to RFI caused by dimmer switches on the wall and in some lamps such as halogen lamps. If your modem is susceptible to this type of RFI problem, you could experience slow DSL performance. Since RFI can be transmitted via the wiring in your home or office, the dimmer switches or halogen lamps don't have to be close to your DSL modem.

Try unplugging or disconnecting dimmer switches to see if this improves your connection speed. If it does, eliminate the lighting, replace the dimmer switch with one that has a better RFI filter rating, or plug the DSL modem into a surge suppressor that has a built-in RFI filter.

Contents

     1.  Intro
     2.  Test your connection speed
     3.  Monitor your connection
     4.  Tweak your system
     5.  Problems caused by line quality
     6.  Problems cause by household lighting
     7.  External AC/DC power adapters
     8.  Resources
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