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Difference between revisions of "DACS"

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(Created page with " == DACS - Digital Access Carrier System. == A system used by BT circa 1980 - 2000 to provide a telephone service to a premise where there was no spare copper pair availabl...")
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Revision as of 13:28, 24 January 2012

DACS - Digital Access Carrier System.

A system used by BT circa 1980 - 2000 to provide a telephone service to a premise where there was no spare copper pair available.

DACS allows 2 digital telephone signals to be carried over the same pair in the local loop.


DACS Exchange Equipment.

DACS Exchange Unit


DACS works by converting the telephone analogue signals into digital signals and allowing 2 digital signals to be carried over the same copper pair from the exchange to the local pole or in the home.

To the right is a photograph of a typical DACs exchange unit which connects the analogue line from the line card in the exchange and converts the signal into digital format.

The DACS EU also monitors for line faults.


DACS Remote Unit