Digital Access Carrier System - Overview

Overview

The DACS system consists of three main parts:

1. The exchange unit (EU), which connects multiple pairs of analogue lines to their corresponding single digital lines. One Telspec EU rack connects as many as 80 analogue lines over 40 digital copper pairs.
2. The copper pair between the Exchange and the Remote Unit, carrying the digital signal between the exchange unit and the remote unit.
3. The remote unit (RU), which connects two analogue customer lines to one digital copper pair. The RUs are usually to be found on poles within a few hundred metres of the subscriber's homes or business.