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Phone Ring Flasher for Work

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  • Phones
  • Computers
Last response: in Other Consumer Electronics
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May 1, 2014 10:08:41 AM

Hi Guys, I'm not sure if this is the correct forum section, so I apologize in advance if I'm in the wrong spot. This isn't a computer question as well, but I figured most of the folks here are tech savvy and would probably have some suggestions.

I like listening to headphones at work. I have IEMs with isolates noises very well. But the problem is that I can't hear my work phone ringing. So I'm looking for some sort of visual indicator that would let me know if I'm getting a call.

I bought and tried this: http://www.amazon.com/Krown-Phone-Flasher/dp/B003E6LFCO
But it didn't work for me. After some googling, I found that product doesn't work for some PBX or VOIP systems, which I'm thinking we probably have.


I was wondering if you guys have other suggestions. Something I can buy is preferred. But I don't mind building one if it's easy enough (have very minimal soldering abilities). Like I've read somewhere that you can splice an LED to a the phone cord, and with the right resistors and things it'll light up when receiving a call.


Thanks in advance

More about : phone ring flasher work

May 5, 2014 5:12:34 AM

come on guys no ideas?

I tried a different brand flasher, didn't work.

I also tried one of those music activated car stickers that animates with music/sound (the equalizer looking things) but the sound sensor wasn't sensitive enough to pickup my phone ringing so this didn't work either.

And I can't just turn up the phone ring volume since I don't want to annoy the guy beside me.

last thing I would maybe try is to build one using a raspberry pi or something. I've read somewhere that they can be used to build an answering machine. I could probably find a guide somewhere that would make it flash when I receive a call. Kinda expensive and would need a lot of work though so I'm saving this for last

any other thoughts would be appreciated. thanks
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Best solution

May 5, 2014 12:10:01 PM

If you can take apart the phone you can measure the voltage across the speaker when it rings. You could then put an led in series with a resistor in parallel with it. Probably NSFW. If you could do this with the phone cord then the flashers you tried probably would have worked.
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