I have a Panasonic video surveillance multiplexer that has a data input (RJ11) that allows for a controller unit to send commands for various functions ex. Select Cam, Pan, Tilt, Zoom. I'm an experienced .NET/Java developer but haven't ever done any work with hardware communication.
Can anyone share some links or knowledge on how i'd go about doing something like this?
I think my biggest hurdle will be figuring out what type of commands i need to send the unit to carry out the various tasks.
I've thought about taking the unit apart and making my own controller piece to wire directly into the buttons that manually control unit.