Commo connections within the radio on the box are by means of one particular RJ45 breakout board and 1 RJ12 connector, both equally mounted within the rear on the box. Commo through the box towards the microphone is via just one RJ12 connector, which can be employing only 3 of the 6 wires: mic ground, sizzling, and 5v.Tokin explained: If you'd like