Subject: From: Date:

RE: [ECS] RingGenerator [Was RE: CID] Martin Terry Tue, 13 Oct 1998 08:56:57 -0700

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Thanks Ingo. I am currently blocking the ring from the phone company
with ECS, until CID info is processed.  The problem with this particular
event is that ECS answers the phone (without me hearing a ring), gives a
message that the unknown caller must identify themselves by entering a
phone number, then checks the number and decides to take a message or
send the call through - however, at this point the phone company is out
of the loop, the phone has been answered and off hook for a good 30
seconds. That's why it would be nice if ECS could put the caller on
"hold", ring the phone, then connect everything when someone picks up
the phone in the house.

I'm currently just making a voice announcement (as I do with normal
calls, as if CID info was received) then playing a wav "phone ring".

I also have to modify the event to deal with the circumstance that noone
answers the phone after ECS has blessed the call.  This event is still
in it's infancy.


> -----Original Message-----
> From:	Ingo Dean [SMTP:Ingo_Dean@mentorg.com]
> Sent:	Tuesday, October 13, 1998 8:50 AM
> To:	ecs-list@vancouver.ml.org
> Subject:	[ECS] RingGenerator [Was RE: CID]
> 
> > Anyone know how to generate a ring signal, without causing the phone
> > company duress?
> >
> > I'm not letting this stop me however; I'm currently using a voice
> > announcement to inform me if the call makes it through.
> 
> I'd start any hardware phone project by looking at Mike Sandman's
> pages:
> 
> 	http://www.sandman.com/
> 	(Check out the Hook Detection Circuit on the Wizards page).
> 
> If he doesn't have it, I'd do a search on http://www.hotbot.com (or
> Altavista, or Infoseek, or...) for the exact phrase "ring generator".
> 
> Here's a few I found:
> http://www.codemicro.com/es/e393.html
> http://www.algo.ca/cat-rgen.html
> http://www.powersolutions.com/products/fonmod.html
> 
> You might also consider simply blocking the phone company's ring
> signal until you've verified that it matches your CID criteria, then
> drop the block.  There are ring suppressors out there, and they may be
> cheaper than ring generators...  Or consider using a key system or
> intercom for ringing.  Or disable all ringers on all your phones, and
> just use a whole-house speaker system to announce calls - you can even
> play a WAV file with whatever ring sound you like.
> 
> Let us know how it goes.
> 
> --ingo
> 
> 
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