Electronic Alarms and Home Security Devices - DSL and Brinks Home Alarm

I have a situation that I've never had to deal with before.

I have to install DSL (SBC) in a home that has a Brinks home alarm installed. From what I could tell (only spent a couple of minutes looking at the phone wiring) the alarm intercepts the phone line coming into the house. What's the best way to "bypass" the alarm console? I'm thinking of cutting the line when it enters the house, but before it gets "hijacked" by the alarm console. I would put a splitter at that point, then the line going into the console would be filtered. This will also add the benefit of no additional filters in the house. I will then run a new phone line from the splitter to the DSL modem.
Is this an "acceptable" practice? If not, how is it done? I would immagine the problem is fairly common.

There is actually a DSL filter that preserves the line seizure function of the alarm panel (which keeps someone from defeating the alarm dialer by simply taking a phone off the hook)

http://www.excelsus-tech.com/index.cfm?fuseaction=products.Category&id=6

The method that you are proposing will work, though, so long as the filtered line passes through the alarm panel first before feeding the house phones. Unfiltered DSL signals will prevent most alarm panels from connection to the monitoring center reliably.

You can also get a DSL line splitter (that's not the right terminology, there's another name for that I just can't think of right now) that the "good" technicians will install for a situation like this.

Basically, what this splitter does is filter the line to the house, then gives you a dedicated line for DSL (essentially what you mentioned.)

But, if you just want an easy fix, go with the Excelsus filter.

Good luck!

I have found out that if you look inside the alarm panel, if it is a 670, 1000 series or a 2000 series-you will need a seperate filter. If it is a 3000 series there is a filter built into the board and it should transmit fine.

The way I decided to go is to run the incoming line into a regular phone jack. A "standard" filter supplied by SBC goes into the jack. The filter has 2 outputs, a "filtered" one and a "DSL" one. The red/green lines (incoming) from the alarm go to the filtered output. The DSL modem goes into the DSL output. The output of the alarm panel (yellow/black) goes into the distribuition (punch type) box. All works well for the phone, but nothing works for the DSL. I even connected the modem straight to the incoming line with no luck. Basically I find that there is no DSL signal on the line, even though SBC is saying the line is active. So now I'm waiting for a tech to come over and check the line. This is the longest DSL install I've ever attempted.

I don't believe my setup will prevent the alarm from "seizing" the phone line. The DSL modem doesn't "pick up" the line, it merely listens to it. And since all of the phones in the house go through the alarm panel they can all be "cycled". The DSL modem will be in the same closet as the alarm, about 4' away.