I’m looking for a way to open a door from FreePBX. I have a contact, coming from an electrical, basically it’s 2 wires and when I hold them together the door will open.
All I need is that I take a phone, dial a number and the door will open.
Obviously, I need some sort of interface. I could add an ATA and connect a ring-up relay to that. But it would be very nice if I could do it in another way. Another wish of mine is to be able to control multiple relays, so I call a number, the interface answers and when I press 1 relay 1 will switch, 2 for relay 2 and so on and if I press 9 all relays will switch together.
The best way to open a door with an electric striker is to use a Viking or Bogen Door controller. They will accept either a FXO or FXS line (depending on the model). You can dial a number, the box will answer, then press a key (* or similar) and the door will buzz open.
There are several different models, but here is one that could work: