Editing Remote concentrator (section)

==Technology implications==
Having a concentrator near a subscriber's telephone results in very low signal degradation before the analog signal is digitized.  This provides reliably good voice quality.

Concentrators are often placed alongside a [[digital subscriber line access multiplexer]] (DSLAM).  This can provide access to [[asymmetric digital subscriber line]] (ADSL) Internet service for subscribers who are beyond the normal {{convert|4|km|mi}} signaling limit on a copper wire loop.  For example, a fiber optic cable might run up to {{convert|30|km|mi}} without a repeater from the telephone exchange to a concentrator site, and local subscriber wire [[local loop]]s can extend an additional 4&nbsp;km beyond the concentrator and its DSLAM.  With repeaters in the fiber optic cable the distance from the telephone exchange can be extended much farther.