Differences between current version and predecessor to the previous major change of DSL.
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| Newer page: | version 10 | Last edited on Friday, March 18, 2005 4:47:57 pm | by IanMcDonald | |
| Older page: | version 7 | Last edited on Friday, March 12, 2004 6:47:03 pm | by DanielLawson | Revert |
@@ -1,9 +1,11 @@
[Acronym] for __D__igital __S__ubscriber __L__ine
-There are several types of DSL around, although only [ADSL] is
readily available in New Zealand.
+There are several types of DSL around, although only [ADSL] and [SDSL] are
readily available in New Zealand.
-| |[ADSL]|[VDSL
]|[HDSL
]|[SDSL
]
+Not many people are aware but Telecom is extensively selling [SDSL] to businesses when they order Ethernet connectivity and fibre to the premises are unavailable, they only need up to 2 Mbps or there will be a delay with getting higher speed product available. It is not sold as [SDSL] but called other names as Telecom starts to demphasie FrameRelay.
+
+
| |[ADSL]|[HDSL
]|[SDSL
]|[VDSL
]
|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
@@ -12,8 +14,10 @@
|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
