Diagram showing ADC (analogue/digital converter) to the Internet and photograph of the Cobox It is slightly more complex to send information across the Internet, because the serial data needs to be converted to ethernet (TCP/IP). This diagram explains this. In all these cases, for communication to be successful the data needs to be in the correct format and arrive at the speed expected by the device. Each end of the communication needs to be talking the same language. These specifications are usually referred to as a protocol