17. The system of claim 16 , wherein the piece of equipment comprises an interface slot and the voice detection unit is plugged into the interface slot.
17. The system of claim 16 , wherein the piece of equipment comprises an interface slot and the voice detection unit is plugged into the interface slot. 19. The system of claim 17 , wherein the piece of equipment comprises a telephony switch and the voice detection unit is plugged into the interface slot of the telephony switch.