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Reference.org
Digital access carrier system
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<p> Digital access carrier system (DACS) is the name used by British Telecom (<a href="/facts/BT_Group_plc/RV9sGpcD">BT Group plc</a>) in the United Kingdom for a 0+2 <a href="/facts/Pair_gain/1175E1Rf">pair gain</a> system. </p>