Re: Channel Vision whole house DSL filter

["Robert L Bass" <no-sales-spam@bassburglaralarms>]

> DSL complicates the issues because
> some people want to be able to seize
> the voice line so the alarm can dial out
> WITHOUT interrupting their DSL
> connection (which could be relaying
> images from the house cameras that
> you might want to see remotely to
> confirm an alarm condition exists).
>
> Which do you want to do?  Is it
> acceptable to you for the DSL line to
> go down when your alarm dials out?

Bobby,

That's not necessary.  If the gentleman
uses the method I described earlier
his DSL and his alarm will function
simultaneously.

> The RJ31 jack is larger than a regular
> RJ11 phone jack because the phone
> lines must be able to enter the jack, go
> into the panel, through the "line-seizure"
> switch, back out through the jack and
> finally on to the phone wires that serve
> the household phones...

Actually, all of that could be done using
a standard width jack with shorting
bars.  The reason the RJ31X jack is
larger is it can accomodate two phone
lines with line siezure.  Because, as
you rightly stated, each line needs 2
connectors for incoming line and 2 more
for inside phones, the jack has eight
terminals.  The cord likewise, has eight
wires and the plug is the size of a CAT5
plug.

>> I've got an ITI Simon alarm that seems
>> to have four power wires and two
>> phone wires going back to the alarm
>> panel. I gather I just need to wire up
>> the red/green to the center of the RJ31
>> connector.

Please do not do that.  If you only connect
red/green to the alarm you will defeat the
line siezure function.  That means all the
thief needs to do is lift a phone or call the
house and leave the phone ringing (old
burglar trick) to block the alarm signal.

> Lots of potential problems.  Static can
> be a grounding problem, oxidation on
> connections or just loose wiring...

Given the gentleman makes no indication
of a problem before he added DSL, I'd
say those are not the likely cause.  He's
probably hearing DSL noise on the line.
Proper filtration will eliminate that.

--

Regards,
Robert L Bass

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