This document is a DuraFon PRO Digital Long Range Industrial Cordless System user manual, which introduces the features and characteristics of the product, including safety instructions, equipment checklist, handpiece, base, charger, optional DuraFon PRO platform products, base station installation, handset and charger installation, basic operations, operation modes, menu tree, making a telephone call, making a 2-way / intercom call, handset to handset calls, making a broadcast, redial, receiving a telephone call, receiving an intercom call, ending a call, adjusting receiver (earpiece) voice volume, placing a call on hold, mute, do not disturb (silent ring), key guard, view missed call(s), call back from call log