[asterisk-users] Door Contacts via Asterisk?

[C F]

Wow you actually wrote code that could be accomplished for less than
$20.00 with sandman.

On Mon, Nov 15, 2010 at 2:34 PM, Dr. Michael J. Chudobiak
<mjc at avtechpulse.com> wrote:
> On 11/15/2010 01:35 PM, Cassius Smith wrote:
>> Hi all,
>> I have had (what I consider) an odd request. The installation I'm
>> working on now is an office on a multi-floor building. They 're looking
>> for some kind of solution with the phone system to provide door control.
>> We are a non-profit so of course I'm looking for something VERY inexpensive.
>>
>> I'm sure /someone/ has done something like this. I'd appreciate any ideas.
>
> Well, I use Asterisk to call a Perl AGI script which drives a serial
> port DTR line high (using Device::SerialPort and Asterisk::AGI) for 20
> seconds. The serial port line drives a transistor, which drives a large
> relay, which applies power to the (pre-existing) door solenoid.
>
> Fairly trivial if you know how, hard otherwise :-)
>
> - Mike
>
>
>
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