[asterisk-users] Door Contacts via Asterisk?

[Joe Freeman]

I've done a remote door unlock system in the past. The customer had an 
existing magnetic lock system that utilized push buttons on the wall to 
release the magnetic locks on the doors. They already had this system, 
and the associated door controller.

I used an APC AP9210 Master Switch network power controller to solve the 
problem. I plugged the power brick for the door controller into the 
AP9210, put the AP9210 on the network, and wrote a script that caused 
the device to cut power to the door controller for 5 seconds by setting 
an SNMP variable.

I coupled that shells script with some dialplan logic that asked the 
caller for a pin, then using the callerid(num) value as a username, 
checked the username/pin combo against a database.. If the combination 
passed, the shell script was called. If it didn't, I looped back to the 
request for the pin, for up to 2 more times, then disconnected the call.

I know Cyberdata has some SIP based door intercoms that have lock relays 
built in, as well. I have no idea what the cost for them is, though.



On 11/15/2010 1:35 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.
>
> Cassius Smith
>