
Defining the Line Boards
The FX II accepts several different types of lines. In order to use these various lines, you must install
the correct line board. The following list details the line boards.
Loop-Start Line Board
The loop-start line board provides system interface for loop start lines. Loop start lines are the most
common CO line type (loop-start lines do not usually offer disconnect supervision).
Ground-Start Line Board
The ground-start line board supports both loop-start and ground-start lines..
T1 Line Board (available for domestic U.S.A. applications)
The T1 board provides either 8, 16, or 24 channels of voice transmissions over a single, four-wire,
cable using multiplexing techniques.
ISDN-PRI Interface
The ISDN-PRI interface provides integrated services digital network (ISDN) primary rate interface
(PRI) to the FX II.
Reviewing the Hardware – 17
General Description GCA40–242
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