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Article View: alt.security.alarms
Article #267

PR: DSL Filter for Alarms & Automation Systems

#267
From: Robert L. Bass
Date: Sat, 21 Sep 2002 02:26
45 lines
3752 bytes
Pardon the commercial post.  I think it's on topic here.

A common complaint from DSL users is that the DSL interferes with the
security or HA system's digital communicator.  Apparently, DSL installers,
particularly those who work for the local telcos, frequently fail to
properly filter the DSL from the alarm system.  Sometimes the property owner
is unaware of the problem until the alarm fails to communicate an event to
the monitoring facility.

Due to the manner in which the phone line is connected to an alarm or HA
panel, conventional plug-in filters are not an adequate solution.  The user
must install a "splitter/filter" at the demarcation point (where the phone
lines enter the premises) and run a separate line to the DSL modem.
Unfortunately, the telco installers usually do not do this.  They come with
a package of in-line filters which are plugged into each phone jack.  The
phone is then piggy-backed on the filter.  Short of installing a separate
line to the DSL modem and using a splitter/filter at the demarc there has
not until recently been an adequate solution.

A company called Excelsius Technologies now makes a plug-in DSL filter that
can be inserted directly into the alarm system's RJ-31X jack.  The unit is a
model Z-A431PJ31X-A.  Following is a link to the manufacturer's web site.

www.excelsus-tech.com/products/alarm.asp

I have added this product to the Bass Home Electronics web site in case
anyone here is interested.

NOTE:  This PR post is x-posted to several relevant news groups.  Before
responding, please consider deleting groups other than your "home" group.
Thanks.

Regards,
Robert L Bass

=============================>
Bass Home Electronics
The Online DIY Alarm Store
http://www.Bass-Home.com
2291 Pine View Circle
Sarasota, FL 34231
877-722-8900 Sales & Tech Support
941-925-9747 Fax
robertlbass@comcast.net
=============================>
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From: "Robert L. Bass" <robertlbass@comcast.net>
Newsgroups: alt.security.alarms,alt.security.doityourself,alt.security.doityourself.ads,comp.home.automation,ieee.ces.home-automation
Subject: PR: DSL Filter for Alarms & Automation Systems
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Date: Sat, 21 Sep 2002 02:26:28 GMT