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Aol Broadband Problems Information & Services

Some useful information about broadband and internet access

Digital Subscriber Line, or DSL, is a family of technologies that provide digital data transmission over the wires used in the "last mile" of a local telephone network. Typically, the download speed of DSL ranges from 128 kilobits per second (Kb/s) to 6000 Kb/s depending on DSL technology and service level implemented. Upload speed is lower than download speed for ADSL and symetrical for SDSL.

DSL is the principal competition of cable modems for providing high speed Internet access to home consumers in Europe and North America. Older ADSL standards can deliver 8 Mbit/s over about 2 km (1.24 miles) of unshielded twisted pair copper wire. The latest standard ADSL2+ can deliver more than 20 Mbit/s over similar distances. Many customers, however, are located farther than 2 km (1.24 miles) from the telephone exchange, which reduces the amount of bandwidth available (thereby reducing the data rate) on the wires. On average, cable is faster than DSL in most commercial situations. Modern cable systems can provide 30 Mbit/s downstream, but this bandwidth is shared between all the users on the cable segment (which could be from 100 to 200 households).

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