The Digital Business Phone HD Series was an easy-to-use system providing a variety of functions unique to a digital system. The system had a large liquid crystal display on which the user could visually confirm operating procedures and various messages. To meet the hotel, dormitory, and hospital needs, the system allowed a combination of a certain number of telephone lines and a certain number of extensions to be selected freely to suit the facility size and also to be used for morning calls, call charge management, and a prepaid system.

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