Re: NET: DSL configuration on phoneline

[Andy Medina]

If you are getting Adsl (not Sdsl), then unless you are paying 
for TWO phone lines from the telco, you will need a filter. For 
Adsl, the voice and dsl signals are combined and sent/received 
between the telco and the demarc (the outside box) on one 
physical circuit. From there, the dsl signal has to be filtered 
out of the signal for the "voice" devices (phone, fax, etc), or 
you will hear a hissing sound on them (that's the dsl signal).

When you say "modem will not share the line with anything 
else", do you mean it will not share the telephone *number* 
with anything else? If the adsl is delivered to the demarc on 
the same telephone number as voice, then you will need a "whole 
house" filter on the voice side at the demarc (preferred), or 
you can use separate filters at each device.

On Sun, 15 May 2005, Christopher E. Rich wrote:
Separate line run from the outside box to the phone plug into 
which I will be plugging the DSL modem (gateway.)  As the 
modem will not share the line with anything else, do I have 
to put a filter at the outside box?  Several web pages I have 
read seem to indicate no filter will be necessary as the only 
place the voice line meets the DSL line (from the modem) is 
at the outside box.
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