Commo connections from the radio to your box are by way of a person RJ45 breakout board and a single RJ12 connector, each mounted for the rear from the box. Commo with the box towards the microphone is by means of one RJ12 connector, which is applying only 3 of the 6 wires: mic ground, warm, and 5v.CNET is now not publishing State-of-the-art image