| Revision as of 05:42, 11 November 2005 editXaosflux (talk | contribs)Edit filter managers, Autopatrolled, Bureaucrats, Importers, Interface administrators, Oversighters, Administrators83,941 edits →DSL "modems"← Previous edit |
Latest revision as of 06:54, 13 December 2024 edit undoOknazevad (talk | contribs)Extended confirmed users106,498 edits Moving twenty year old(!) comments to archive. Auto archiving can't tell how old they are because of the lack of modern formatting of talk page signature |
| (239 intermediate revisions by more than 100 users not shown) |
| Line 1: |
Line 1: |
|
|
{{Skip to talk}} |
|
I capitalized Ethernet. Ethernet is always capitalized. |
|
|
|
{{Talk header|bottom=yes}} |
|
--] 09:31, 22 Nov 2004 (UTC) |
|
|
|
{{WikiProject banner shell|collapsed=yes|class=C| |
|
|
|
|
|
{{WikiProject Computing |importance=mid |network=yes |network-importance=High}} |
|
---- |
|
|
|
{{WikiProject Telecommunications |importance=high}} |
|
|
|
|
|
{{WikiProject Technology}} |
|
I cut this: |
|
|
|
{{WikiProject Internet}} |
|
|
|
|
|
}} |
|
Some of the common "DSL Killers" are: |
|
|
|
{{User:MiszaBot/config |
|
* ] |
|
|
|
| algo = old(365d) |
|
* ] |
|
|
|
| archive = Talk:Digital subscriber line/Archive %(counter)d |
|
* "SLIC" boxes, or splitters, where copper capacity is increased by extending with multiple fibres. DSL can't travel over fibre, and most telephone companies choose not to offer fibre connections to residential customers. |
|
|
|
| counter = 1 |
|
* "DACS" boxes, where two baseband analog telephone lines are multiplexed over a single copper pair using ISDN-like technology to connect to the central office. Neither of the multiplexed lines is then usable for either DSL or ISDN service, as there is no metallic high-frequency path available. Where the central office connection is demultiplexed to analog connections, there is the added disadvantage that standard analog ] speeds are also reduced significantly. |
|
|
|
| maxarchivesize = 150K |
|
|
|
|
|
| archiveheader = {{Automatic archive navigator}} |
|
As I'm not sure what its trying to say. You obviously need a continous copper line from CP to CO and I think this muddies the waters. ] |
|
|
|
| minthreadstoarchive = 1 |
|
|
|
|
|
| minthreadsleft = 4 |
|
I see that the titles ], ], ], ], and ] |
|
|
|
}} |
|
are all capitalized. These articles tend to have lots of incorrectly capitalized letters in the body of the article, and that makes me suspect that someone may have written them as capitals under the incorrect impression that the Misplaced Pages convention is to capitalize words in article titles? What is going on? ] 21:23, 2 Aug 2004 (UTC) |
|
|
|
|
|
== dsl inventor == |
|
|
|
|
|
I am aware DSL technology started in Bell lab at around 1988. However, i can't see to find the guy behind the technology. A used google to try and look it up, but it looks like hundreds of people are claimimg dsl as their invention. This make it all the more important to find the real inventor and give credit to the right guy. I am aware that all inventions are progressive work and that ] did most of the theoritical work, but then humans like personalizing achievement and hence the need of the guy who put things together and called it dsl. GITLIN, Richard claim to be one of them in this article Anyone know the history behind this? |
|
|
|
|
|
== History == |
|
|
|
|
|
There should be more on the DSL History. Like how it was at one point intended to carry Video-On-Demand. |
|
|
|
|
|
|
|
|
== DSL history - sources? == |
|
|
|
|
|
The first paragraph on the DSL page makes some claims that I haven't heard elsewhere. Some sources are needed for it(news reports, historical studies, etc.). It's good writing, and interesting, but it needs to be sourced. |
|
|
|
|
|
The paragraph: |
|
|
"Its origin dates back to 1988, when an engineer at Bell research lab deviced a way to carry digital signal over the unused frequency spectrum. This allows ordinary phone line to provide digital communication without blocking access to voice services. Bells management however were not enthusiastic about it as it was not as profitable as renting out a second line for those consumers who prefered to still have acess to the phone when dialing out. This however changed in the late 90s when cable companies started marketing broadband internet access. Realising that most consumers would prefer broadband over a second dial out line, Bell companies rushed out the DSL technology that they had been sitting on for the past decade as an attempt to slow broadband internet access uptake." - |
|
|
(Also posted on ]) |
|
|
] 19:48, 6 Apr 2005 (UTC) |
|
|
:wk muriithi replied on my talk page saying he got it from "Crafting and Executing strategy 14th edition by Arthur A. Thompson Jr.". If someone who has a copy could verify this, and add it as a footnote(use ] style) that would be great. Thanks for replying, Wk! ] 05:34, 15 Apr 2005 (UTC) |
|
|
|
|
|
== DSL "modems" == |
|
|
|
|
|
I heard some claim that DSL modems aren't really modems. Is this just BS? - ] 01:18, Apr 15, 2005 (UTC) |
|
|
|
|
|
I'd say that's BS. The definition of a ] is something that takes data and modulates it onto an analog signal on one end and then demodulates it back to digital at the other end. What's called a DSL modem can be thought of as a whole bunch of dial-up modems working in parallel at different frequencies to get you a large pipe. I've just rewritten the "How it Works" section of the main article that explains it in some technical detail. --] Apr 17, 2005 |
|
|
|
|
|
I'd say it depends what you heard...these days most CP xDSL equipment is actuall a ROUTER, typically supporting NAT, and generally also a DHCP SERVER ] 05:42, 11 November 2005 (UTC) |
|
|
|
|
|
== Most widely used variety? == |
|
|
|
|
|
I wonder what variety of DSL is most commonly used? The only variety offered in my country is ] so I have no clue what is used in other countries. As I see it, ADSL is the most reliable variety, and hence the most common used. Can anyone comment on this? |
|
|
--] 19:19, 25 Apr 2005 (UTC) |
|
|
|
|
|
ADSL is by far the most common, but it's less an issue of reliability than one of giving the customers, most of whom receive far more than they send, high download speeds. With the exception of IDSL (which isn't really DSL; it's just a bonded pair of ] B channels), all of the flavors of DSL are pretty much the same from a technical standpoint. Two things differentiate them. First is the amount of spectrum above the baseband POTS signal. This is, effectively, a measure of the size of the pipe that carries all of your data in both directions. It's determined to a large extent by the basic technology in use (DSL, HDSL, VDSL) and the length and condition of the copper between you and the DSLAM. The second is whether the fractions devoted to the upstream and downstream channels are equal (for Symetric DSL or SDSL) or different (for Asymetric DSL or ADSL). As an example, my DSL line has a total of 4424 kbps available, and my ISP (]) allocates 864 for upstream and leaves the remainder for upstream, giving me ADSL service. They could just as easily have allocated 2112 each way for SDSL or, if I had some special application where I needed it, 864 down and 3360 up for ADSL. |
|
|
--] 07:50, 16 May 2005 (UTC) |
|
|
|
|
|
Actually, there IS a good technical reason for ADSL: at the customer |
|
|
end, the UPlink signal being transmitted by the modem is strong and |
|
|
the DOWNling signal being transmitted by the DSLAM is weak, whereas |
|
|
it's the other way around at the CO end. Crosstalk is much more |
|
|
likely to be an issue at the CO end, where local loops from a number |
|
|
of customers are physically close together. So the S/N is often |
|
|
better for DOWNLlink than for UPlink. It was good fortune that the |
|
|
average customer wants more speed downloading, hence ADSL made |
|
|
lemonade from this particular lemon. |
|
|
|
|
|
|
|
|
== External link == |
|
|
|
|
|
First external link is dead. |
|
|
|
|
|
== Internet Speed Calculator == |
|
|
|
|
|
There should be a calculator where you input a filesize and it outputs the time required to download/view that file on different internet speeds. |
|
|
|
|
|
:There are plenty online. -] 02:50, August 22, 2005 (UTC) |
|
|
|
|
|
== DSL Repeater == |
|
|
|
|
|
Can someone explain why there are no DSL repeaters to extend the range of DSL usage? Seems like it would be simple to have a line-powered repeater to regenerate the signal and extend the range. |
|
