How do I play anything I want over my school's intercom?
My school has their intercom set up so that any phone in-line jack can connect to the intercom except only the phones in the office have the ability to do it at the moment because the code to get on the intercom is page #00. So all i would need is the same kind of phone (Starplus Triad). Then I could do it manually in front of the phone but that leaves too much of a trace and not a good ally if I got caught standing their with the phone. My idea is to be able to wirelessly send a message via Bluetooth with my phone to maybe an arduino board or raspberry? and then trigger the phone code as well- all of which while it plays the message. Anybody got any ideas? -AND YES I do know this is dangerous and I can get in trouble but I'm quite technical about these things and am trying to eliminate all trace of it possibly being me. I will also add that I will use a voice changer when sending the messages. The messages would most likely have to be pre-recorded because I'm sure phones don't have the ability to send a voice-changed audio clip