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Telephone Line Requirements

Type of phone lines that work with CapTel

• The CapTel is designed to work with a standard analog telephone line, the type of line most commonly found for household phones.
• You may also connect to a Digital Subscriber Line (DSL) with the appropriate analog filter, as explained on this page.
• The CapTel should NOT be plugged into any other kind of telephone line.
• Connection to a digital telephone line may damage the CapTel or telephone system and will void the CapTel warranty.

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Using CapTel with DSL

As more and more people take advantage of the high-speed capabilities of Digital Subscriber Line (DSL) service, there is good news for CapTel users. The CapTel phone may be used with a DSL as long as an "analog filter" is placed on the line between the CapTel phone and the DSL connection.

Analog filters are very common, and are placed on all telephones in a home where DSL service is connected. Often, your DSL provider will supply these filters at the time of connection. In some cases, DSL subscribers may elect to have a "Whole House" filter installed; this, too, should allow for easy connection of a CapTel phone.

If you have or are considering DSL, please check with your DSL provider to make sure you have the proper analog filter all lined up!

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Requirements for 2-Line CapTel

To use 2-Line CapTel:

• Your state relay service must offer 2-line CapTel as part of its CapTel service. (See this list.)
• You must have a CapTel telephone (Model 200).
• You must have two analog telephone lines with separate telephone numbers in your home or office. The second line cannot merely be an extension line.

Telephone lines for CapTel must be analog, the same type of line that is used by a standard telephone or a stand-alone fax machine.

Digital telephone lines are not compatible with the CapTel phone and may damage the telephone or telephone network. If you are installing the CapTel in an office setting, check with the telephone system administrator to ensure that an analog port is available. A digital subscriber line (DSL) may be used with an appropriate analog filter.

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CapTel in Action!

Learn more about CapTel with this introductory video you can view online.

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