Differences between version 5 and predecessor to the previous major change of DSL.
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| Newer page: | version 5 | Last edited on Friday, March 12, 2004 6:38:01 pm | by DanielLawson | Revert |
| Older page: | version 1 | Last edited on Monday, October 7, 2002 4:49:07 pm | by PerryLorier | Revert |
@@ -1 +1,19 @@
[Acronym] for __D__igital __S__ubscriber __L__ine
+
+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
+
+----
+
+CategoryNetworking
