The HUB interface is a simple and economical way to add full duplex wireless headsets to popular Clear-com wired intercoms. The interface connects the HUB (sold separately) to the wall socket or rack-mounted power console. Signal level settings create a transparent audio link with any combination of up to 6 transceivers. Choose any combination of wireless headsets to create a fully customised system. -Add six wireless at once -Mobile users communicate via the shared line -All communicate in full duplex -Mobile users can communicate with hands-free wired headsets, simultaneously and without interconnection cables.