x Digital Subscriber Line
Broadband Internet Glossary
Broadband Internet — x Digital Subscriber Line
Information on x Digital Subscriber Line
DSL (digital subscriber line) allows broadband data services, such as
broadband Internet access, to be carried on conventional copper pair
telephone cables. The x is replaced by a letter that
defines the specific type of DSL system.
A x Digital Subscriber Line system
may be either "asymmetric" or "symmetric". An asymmetric x Digital Subscriber Line
system provides different uplink and downlink capacities; typically a much
higher capacity is provided for the downlink than for the
uplink. A symmetric x Digital Subscriber Line system provides the same capacity
for uplink and downlink.
x Digital Subscriber Line may be:
In principle, an x Digital Subscriber Line system using copper telephone cables can provide a data rate up to 2 Mbps at 4 km, increasing to approximately 10 Mbps over 2 km and 50 Mbps over very short ranges (perhaps 100m) . Practical systems mostly operate at much lower data rates, due to limitations in modulation and channel coding techniques.
Other topics in our resources on Broadband Internet related to x Digital Subscriber Line include:
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