DSL

Broadband Internet Glossary

Broadband Internet — DSL

 

 

 

 

 

 

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Information on DSL

DSL (digital subscriber line) allows broadband data services, such as broadband Internet access, to be carried on conventional copper pair telephone cables.
     A DSL system may be either "symmetric" or "asymmetric". A symmetric DSL system provides the same capacity for uplink and downlink. An asymmetric DSL system provides different uplink and downlink capacities; typically a much higher capacity is provided for the downlink than for the uplink.
     In principle, a DSL system using copper telephone cables can provide a data rate up to 50 Mbps over very short ranges (perhaps 100m), declining to approximately 10 Mbps at 2 km and 2 Mbps at 4 km. Practical systems mostly operate at much lower data rates, due to limitations in the channel coding and modulation schemes.


Other topics in our resources on Broadband Internet related to DSL include: 
 
  • DSL Broadband (Digital Subscriber Line Broadband)
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