[VoIP] Asterisk and Payphones

[Martin Harriss]

Mark Rudholm wrote:
> Well, I'm glad to hear there is significant interest in this.
> 
> For the moment, I'm working on coin-relay control.  My first
> draft of the schematic is available here:
> http://rudholm.com/coin-control.pdf (use "File, Rotate" to
> fix the orientation in Acrobat Reader).

Mark,

Looks like there's problem in your schematic.  If you activate the 
return/collect line, you will turn on both the LCC120 SSR's.  This will 
short the 130v line.

Or am I missing something here?

Also, I think I see what you're trying to do with the strobe line.  Why 
not just have the processor (Asterisk, or whatever) turn the line on and 
off to do the strobing?  You may not even need that strobe once you get 
the other part of the circuit sorted out.

Martin