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Monitored alarms must be filtered for High Speed Internet?

D

Doug Mitchell

Jan 1, 1970
0
I very recently got connected with DSL High Speed in Ontario Canada. I
called the ISP to ask about unexpected disconnects and sometimes slower than
expected connect speeds. After checking the lines, by phone, he suggested
that possibly my monitored alarm should have a filter on it.

I called the alarm guy and he claims that most monitoring is, (if I recall
properly) "Signal On Demand" (SOD) and so needs no special treatment. Any
experiences with this?

When I look in the alarm "box" in the main hallway closet I see the jack
where the phone line goes in but this phone line is 'bigger' and the
accommodating jack opening is bigger as well; not like the jacks and lines I
see in each room to which I attached Bell supplied filters.

Possibly a filter (special one?) needs to go on the main line as it comes
into the house?

Thanks for your advice.

Doug
 
S

schism

Jan 1, 1970
0
On Mon, 19 Jan 2004 13:13:02 -0500, "Doug Mitchell"

I know here in the states we use a filter that plugs in at the RJ jack
that is made specificly for the alarm panels. Call a dealer in your
area and ask them for one. And it is sod but if it is wired for
seizure it does just that and seizes the lines , includeing the high
speed.
 
H

HaroldB

Jan 1, 1970
0
There are special alarmco DSL filters available that plug between the panel
and the CA-38 (alarm) jack. They will route the DSL signal to the 'house
wiring' and the panel will not 'see' the internet connection.

Having said that, the load imposed on the phone line by a passive panel (one
not actively communicating) should be zero. Yes, there is a ring detection
circuit, but that imposes no loads when the phone is not ringing.

Now it is possible, even probable that your panel has transient (spike)
filters that can attenuate DSL signals. So ask your alarm supplier for a
plug-in DSL filter for the alarm panel.

If you are REALLY handy, you could wire the DSL-connected jack to the phone
line ahead of the panel, install a 'regular' DSL filter between that point
and the panel - and all of the phones in the house will then be receiving
DSL-free phone connections - from that point everyone should be happy.

Good luck.
 
P

petem

Jan 1, 1970
0
it is true that when the alarm panel will take the line to do some periodic
reports (timer test) you will loose your connection..

and its also true that the panel being connected directly to the phone line
could interfer with the high speed signal
in fact the fa 147 from first alert were doing a lot of interference..(they
have been modified since)

you have to put a filter on every device plugged on the phone line for the
high speed connection be stable..the alarm system also....

the filter i install is build by exelcus technologies
model number z-a431pj31x-a

this will filter out all the high speed signal going to your alarm and will
let the high speed signal pass even when your alarm panel seize the line...

hope it help

Petem
 
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