Acronym for Digital Subscriber Line

There are several types of DSL around, although only ADSL is readily available in New Zealand.

| |ADSL|VDSL|HDSL|SDSL |Bits/second| 1.5 to 9Mbps downstream, 16 to 640 kbps upstream | 1.544 or 2.048 MBps | 1.544 or 2.048 Mbps | 13 to 52 Mbps downstream, 1.5 to 2.3 Mbps upstream |Mode|Asymmetric|Symmetric|Symmetric|Asymmetric |Copper Pairs|1|2|1|1 |Range (24-guage UTP)|3.7 to 5.5 km|3.7km|3.0km|1.4km |Signaling|Analog|Digital|Digital|Analog |Line code|CAP/DMT|2B1Q|2B1Q|DMT |Frequency|1 to 5 MHz|196kHz|196kHz|10MHz |Bits/cycle|Varies|4|4|Varies

-- Taken from "Data and Computer Communications" - William Stalling - 6th Ed, ISBN:0130863882

See also: ADSL2

CategoryNetworking