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DSL LAN Extender 200 User's Guide
Telephone Wire Requirements
The telephone circuits recommended for the DSL LAN Extender 200 are commonly known as Dry Line,
Dry Pair, Raw Copper Line, or Alarm Circuit. Now, it is often referred as DSL Line or ADSL Line.
When ordering a DSL line from a Telco, make sure to tell the telephone company that you need a non-
loaded line with no bridged taps on it. For example, Pacific Bell's Local Area Data Channels (LADC) use
USOC code to specify a 2-wire dry line as "T6E2D".
NOTE:
The term "non-loaded" or "non-loaded coils" means no passive lowpass filter for voice spectrum on the
line. With a lowpass filter, the loop is used for voice signals only, the high frequency spectrum of signals
(above 4Khz) will be filtered out, and the loop cannot be used for xDSL signal transmission.
To have a dry line from a Telco, the loaded coils in the Telco's Central Office and bridge taps at punch
down blocks MUST BE REMOVED from the subscribed line.
Installation Diagram
© 2002 Black Box Corporation
Page 5
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