Tue May 10 17:04:01 NZST 2005
If the alarm is on the phone side of the filter why can't you use ADSL
elsewhere and why don't you need filters elsewhere?
Unless by phone side you mean behind the filter instead of in the
phone socket of the filter which would then make sense.
All that an ADSL filter is, is a cheap bandpass filter.
ADSL uses frequencies over 8 KHz and telephone under 8 KHz and the
filter basically does this split. If you don't put the filter in then
you will get hissing on phone lines and the use of the phone can, but
not always, cause the ADSL "modem" to drop "carrier". I use carrier
and modem in speech marks as ADSL is really lots of modems in effect
each running on their own little frequency.
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