[Asterisk-Users] UPS for Asterisk

[Jay Milk]

Woohoo, something I know something about.  If you experience lights
turning on randomly, that's usually not a sign of interference as
produced by a UPS or somesuch.  It would indicate stray signals, for
example from a neighbor using X10 on the same housecode.  Change your
house-code and see if the problem persists.  If there's no neighbor in
sight, check your -- gasp -- garage door opener.  Some older Stanley
models will actually generate an X10 signal to turn on an interior light
with the garage light.  Quite a surprise to me as well, when I first
detected this a few years back.  That said, a decent noise-filter for
any HF equipment (UPS/PCs/Monitors/TV) is a good idea.  If you're
planning on extending your X10, a whole-house filter and a phase-coupler
are also good investments.

> -----Original Message-----
> From: Andrew Thompson [mailto:asteriskuser at aktzero.com] 
> Sent: Monday, January 24, 2005 1:49 PM
> To: Asterisk Users Mailing List - Non-Commercial Discussion
> Subject: Re: [Asterisk-Users] UPS for Asterisk
> 
> 
> Steve Prior wrote:
> > One word of caution in case you have X10 equipment.  I 
> recently found 
> > out the hard way that some of APC's newest UPS models will cause 
> > interference with X10 signals going over the powerline.  I'm not 
> > talking about the X10 signal not going through the UPC - 
> that would be 
> > expected.  I'm saying that in my case it interfered with 
> X10 signals 
> > elsewhere in the circuit the UPC was on.  Plugging the UPC 
> into an X10 
> > noise filter solved the problem.
> 
> I have an X10 dimmer switch in my bedroom. Initially, it 
> operated fine, 
> no troulbe to speak of. Then, "all of a sudden", it started randomly 
> turning on the main room light in the middle of the night.
> 
> I didn't notice this for a while, mainly because it doesn't bother me 
> unless I'm already awake. But my wife mentioned that it wakes 
> her up and 
> she has to get up to turn it off. (The remote switch seems to 
> have give 
> out, but that could be the battery.)
> 
> I am remembering now, that one day I got mad at the power 
> blinking out 
> so I brought in a heavy duty (well, at least heavy, two part, average 
> geek would only want to move one piece at a time) UPS for my 
> asterisk box.
> 
> Could this be a symptom of the interference you spoke of?
> 
> What filters have you used?
> 
> Thanks.
> 
> -- 
> Andrew Thompson
> http://aktzero.com/
> http://dev.asteriskdocs.org/ 
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