DSL Technology

DSL WAN & ADSL

Modem Infra

see https://github.com/QueenieCplusplus/DSL/blob/master/modem.png

Architectur

     R   ---------------DSL---------CO---------DSL Terminator------Internet
Router of remote area

DSL increases network connectivity options for fixed remote access (or so called extranet users or office).

How it works

It uses twisted-pair tele lines to transport data thru bandwidth. Just using existing infra provided by tele company within PPP to access Public Network.

How Much it charges

It provides "always on" service, and charge in monthly fee.

ADSL

上下行速度的差別

It is as known as "Asymmetric DSL", with different download/upload speed. Ususally Downstream is faster than Upstream.