1. A computer-implemented method of transmitting data, the method comprising transmitting a frame of data across a communication channel, the frame of data including message data, a first 8-bit digital control word, and a second 8-bit digital control word, wherein each of the control words has a unique bit pattern and is associated with a different time interval, each time interval individually indicating where or when the message data begins or began in the frame of data relative to the time interval's associated control word, so that only one of the control words needs to be received to identify the message data in the frame of data.