At 10:16 AM 4/22/2005, David Lesher wrote:
>{Cleaned up so it's possible to follow WTH was said..I wish people
>would a} trim quotes b} stop Jeopardy-posting.}
>
>
>{lift CO from trunk port; put busy there..}
>
>Mike:
>
> It is the KSU and not the user that needs to know
> the line is busy. I can't think of any way to tell the
> KSU that a CO is busy other than to pick up a station
> associated directly with that CO.
>
>
>{me: True!!}
>
>
>Charles:
>
> That device from Mike Sandman does work. www.sandman.com
> You have to be a bit clever with wiring it up, but it
> will do what you described.
>
>
>Me:
>
> What device from Sandman?
The phrase is deviceS. Start with the Wizard's Toolbox (thanks Gary
Christiansen) and look for a loop sensing device. this will operate a
relay whenever loop current flows through it. Put that on your fax machine
or whatever you want to mark busy to the KSU. Now, it gets totally
strange. You ought to have 2 more relays, one being DPDT to open the the
line to theKSU's CO, and one to short a station port to access the CO line
that you want to show busy. Of course, Rube, understand that you might
have to put 9v DC across the NO contacts of the DPDT relay to hold up the
trunk when the station accesses it.
Outside of that, a piece of cake. Oh yeah, the relays are not for direct
connection to the public network so they don't come with any guarantee.
Carl Navarro
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