Fax machine or other phone device does not work after DSL install

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Fax machine or other phone device does not work after DSL install

You may not be able to use your fax machine or other device after installing DSL for any one of several reasons. After trying the first solution, check to see if you can use your fax machine or other device. If you are still unable to use your fax machine or other device, continue using the suggested solutions until the problem is fixed.

You may wish to print or save a copy of these instructions, as this page may not remain visible as you go through the suggested steps.

Information You Need

You will need to know what version of the Microsoft Windows operating system is installed on your computer. If you do not know how to find this information, follow the instructions in the online help article entitled How to Determine Which Version of Windows I Have.

Solutions


Install DSL Filters

A filter eliminates cross talk on the phone line that DSL shares. Cross talk is similar to hearing "noise" or someone else's phone conversation when you are on the phone. In order to receive or place phone calls or faxes on the line that is shared with DSL without cross talk, please install a filter on each device (phone, fax etc.) in your home.

To install DSL filters:
1. Unplug the phone cord from the wall jack.
2. Plug a DSL filter into the wall jack.
3. Plug the phone cord into the DSL filter.

Note: Do not plug the phone cord running from the wall to the DSL modem into a filter.

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Use a Different DSL Filter

Changing the DSL filter will verify that the current filter is working correctly.

To use a different DSL filter:
1. Unplug the phone cord from the current DSL filter.
2. Unplug the current DSL filter from the wall jack.
3. Plug the new DSL filer into the wall jack.
4. Plug the phone cord into the new DSL filter.

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Check for Other Items on the Phone Line

Other items on the phone line may cause interference on the line and keep the fax machine or other devices from working properly. Some services, devices, and utilities use the phone lines in the house.

To check for other devices on the phone line:

  • Home Alarm Systems: The hardware installed that allows the system to automatically call the security company can interfere with a DSL signal. If this is causing the issue, it will be necessary to either rewire the alarm system to another phone line, have a splitter installed to route the DSL around the device, or move the DSL service to another phone number.
  • Call Forwarding: This service will automatically ring another number if the first one does not pick up and is incompatible with DSL. The type of call forwarding that has to be set for each use should be fine as long as it is not set.
  • Digital Cable: This can cause problems for DSL if the cable box uses the phone line for ordering services, such as Pay-per-view movies. You can resolve this issue by putting a DSL filter on that phone line.
  • Door Buzzer/Intercom Systems: On some homes, the phone system connects into a door buzzer and/or intercom system. This can cause interference with the DSL signal. If this is causing the issue, it will be necessary to either move the DSL to another phone number or have a splitter installed to route the DSL service around the door buzzer/intercom system.
  • Utility Services: Some utility services, such as meter readings for water, are done automatically through the customer's phone line. If you have this service, a DSL filter will need to be utilized through that connection.

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Last updated: 03-24-2011
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