DSL (Digital Subscriber Line) is a technology for bringing high- bandwidth information to homes and small businesses over ordinary copper telephone lines. xDSL refers to different variations of DSL, such as ADSL or SDSL. Assuming your home or small business is close enough to a telephone company central office (CO) that offers DSL service, you may be able to receive data at rates up to 6.1 megabits/second. Typically, individual connections will provide from 1.544 Mbps to 512 Kbps downstream and about 128 Kbps upstream. A DSL line can carry both data and voice signals and the data part of the line is continuously connected. DSL is expected to replace ISDN in many areas and to compete with the cable modem both in price and performance.