DHS General Description 2-5
Figure 2-2: 3 x 8 Module
6-Port CO Module
The 6-Port CO Module may be installed in place of a 3 x 8 module in the last card position.
The 6-Port CO Module interfaces with 6 loop-start CO lines. No digital station interface is
provided on this module. The 6-Port CO Module is shipped with four mounting stand-offs
used to install the board into the Basic KSU, two 6-conductor modular line cords and two
6-conductor modular blocks. The mounting cords and modular blocks are used to extend
the CO line interface circuits to the MDF for connection.
Each CO line circuit consists of an over-voltage protector, ring detector, loop detector,
loop/pulse-dial relay, current sink circuit, isolation transformer, hybrid circuit and COMBO
(CODEC and filter).
Figure 2-3: 6-Port CO Module
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