Re: Can a Napco system & DSL connection co-exist?

[Spike2 <nomail@xxxxxx>]

Robert L Bass wrote:
> On Tue, 21 Mar 2006 11:59:15 -0500, "news.vif.com"
> <ebenze@xxxxxxxxxxx> wrote:
>
>
>>Hi,
>>
>>I am looking at having a DSL line installed at my house that would be using
>>the same telephone line as my Napco Magnum 1000.  The Napco currently does
>>nightly self-tests which "seizes" the phone line in the house when it is
>>performing these tests.  My concern with the DSL line is that the DSL link
>>will be dropped every night as well when the Napco does its self tests.
>>
>>My question is the following.  If I split the phone line at the demarkation
>>point where one branch goes only to my DSL modem and the other branch goes
>>through a DSL filter and then to the Napco and the rest of the house, will
>>the Napco still be able to make its nightly self-tests where it seizes the
>>phone line, but doesn't drop my DSL connection?
>>
>>ie:
>>
>>Demarkation pt
>>==============[ Splitter ]
>> phone line                         |=====[DSL Modem]
>>                                         |
>>                                         |=====[ DSL Filter ] ------- [Napco
>>Magnum 1000] ----------[ rest of house ]
>
>
> That will work perfectly.  The DSL modem will not affect the
> Napco panel as long as you have it filtered, either at the demarc
> or via a plug-in filter for the RJ31X.
>
> By splitting the line so that only the DSL modem is on the
> dedicated run you will eliminate lost DSL signal during the Napco
> self-test transmission.
>
> Note:  Many DSL modems come with a port to plug in a standard
> telephone.  The port is filtered so that you can use a phone or
> fax there without needing a separate outlet.  This extra port
> should not be used in your configuration.  Doing so will allow an
> inadvertent off-hook to completely block the Napco system from
> calling out.
>
>
>>A friend of mine currently has a DSL connection on a regular line (no
>>Napco), and sometimes uses a 56k modem on his computer to dial up to other
>>servers.  If a 56K Modem is able to dial up over the DSL line, does this
>>imply that the Napco should be able to as well?  I am assuming that Magnum
>>1000 just uses a regular modem to communicate with the centrale - is this a
>>valid assumption?
>
>
> As long as the line is filtered before going into the Napco panel
> it will transmit.  If it's not filtered transmission will be
> intermittent at best.  By using a split filter at the demarc with
> all analog instruments on the seized side of the Napco panel you
> are providing yourself with the best arrangement.


no need to rewire the house. just get a DSL filter from your alarm
company or online.  [you're missing out on a sale Mr Bass]