digital loop carrier (DLC)
A Digital Loop Carrier(DLC) is a system with which the range in the access area can be increased.
Digital Loop Carrier is used on the telephone cables between the local exchange and the subscriber line. For this purpose, the analog signals to be transmitted from several subscriber lines are digitized and multiplexed to form a data stream. Typically, 24 voice signals are combined into one signal and transmitted to the local exchange via a copper twisted pair, an optical fiber or a radio link.
The DLC lines can transmit telephone cables of analog telephony( POTS) as well as ISDN and DSL processes.