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DACS works by digitizing the analogue signal and sending the combined digital information for both lines over the same copper pair between the exchange and the pole.

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Posted by waqqas1

Its a network element manages the grooming and cross connect interconnections to PSTN.
Examples include:
Connecting wireless base stations to the corresponding base station controllers.
Connecting DSLAMs to the nearest ATM or Ethernet aggregation node.
Connecting a large company's site to a metro Ethernet network.
Connecting a submarine communications cable system landing point (which is usually in a remote location) with the main terrestrial telecommunications network of the country that the cable serves.
The choice of backhaul technology must take account of such parameters as capacity, cost, reach, and the need for such resources as frequency spectrum, optical fibre, wiring, or rights of way. Backhaul technologies include:

Point-to-point microwave radio relay transmission (terrestrial or, in some cases, by satellite)
Point-to-multipoint microwave access technologies, such as LMDS, WiFi, WiMAX, etc., can also be used for backhauling purposes
DSL variants, such as ADSL and SHDSL
PDH and SDH/SONET interfaces, such as (fractional) E1/T1, E3, T3, STM-1/OC-3, etc.
Ethernet
Backhaul capacity can also be leased from another network operator, in which case the choice of technology is generally made by this other network operator

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Posted by john_pederson

Its a network element manages the grooming and cross connect interconnections to PSTN.

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Posted by drolet_55

Digital Access Carrier System (DACS) is the name used by British Telecom (BT Group plc) in the United Kingdom for a 0+2 Pair gain system.

DACS works by digitizing the analogue signal and sending the combined digital information for both lines over the same copper pair between the exchange and the pole. The cost of the DACS equipment is significantly less than the cost of installing additional copper pairs.

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Posted by sagitraz