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| Newer page: | version 6 | Last edited on Sunday, August 17, 2003 12:58:42 pm | by zcat(1) | |
| Older page: | version 5 | Last edited on Sunday, August 17, 2003 4:06:48 am | by AristotlePagaltzis | Revert |
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A frequency division multiplexed communications channel, ie one that uses different parts of the frequency spectrum for different signals.
Normal phone service uses approximately 300Hz-3.2KHz for voice signal, 75V at 20Hz for ringing, and a DC loop current to signal on/offhook and supply a small amount of power to subscriber equipment. However, a pair of copper wires can carry frequencies far above 4KHz. [ADSL] exploits this extra [Analog] BandWidth to carry analog-encoded data between the subscriber and telco without interfering with normal phone service.
-You could even argue that POTS is already
broadband since it uses loop current to signal when the line is in use
..
+U.S.Robotics also has a good description of [how ADSL works|http://www.usr.com/education/bb2.asp]
+and a glossary of [
broadband related terms|http://www.usr
.com/education/broadbandglossary
.asp]
+
The term has long become synonymous with fast, high-bandwidth networking, regardless of the means to achieve it. [TelecomNZ] uses it to describe 128k connections.
See also Dictionary:Broadband
Compare BaseBand
