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DSL "modem"

Posted on 1998-11-16
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Has anybody used a DSL modem? If so how well does it work?
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Question by:GLangan
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by:Otta
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My friend uses an ADSL modem, and gets 1Mbit to 2Mbit per second,
which is *VERY* fast.
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by:GLangan
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Otta
Does it interfere with reg phone line or reg phone line  interfere ADSL modem?
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by:ozo
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Not if a POTS splitter is installed, as is typical.
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by:Otta
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> Does it interfere with reg phone line or reg phone line interfere ADSL modem?

Yes, it does interfere -- your "voice" traffic is carried
over the ADSL line, interspersed with the "data" traffic.
However, there is so much "band-width" available
that there is no degradation, so there are no "harmful" effects
from the interference.
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by:GLangan
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by:ozo
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"interspersed" seems to suggest that the voice and data signals are Time Division Multiplexed
Actually, it's Frequency Division Multiplexed, with voice below 4KHz, and data above 4KHz

(btw, depending on how far you are from the central office, you may not get 1.5Mbps, but if you can get it at all, you should have at least 384Kbps downstream
Upstream speed can be less since you're talkng about Asymmetric DSL)
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