OSC what?

OSC stands for Open Sound Control and here is the Link to Wikipedia.

Essentially it is a protocol for network communication that was originally developed as an alternative to MIDI, for sending data (commands and values) between digital musical instruments/controllers and music software.

What do you need?

• a local network
• the Ip address and port of all the devices that you want to communicate with each other over OSC.

How does it work?

You define a port(should be over 1000) where you start to send a message to another device identified by its IP-Addresses. This device gets the message by listening through its port. In most cases, it will use the UDP Protocol as a base layer to do this.