Importance

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Abstract

A PDC communication controlling apparatus includes an audio processing section for converting a digital audio signal which has been encoded at a transmission rate of a personal digital cellular (PDC) into a digital audio signal at a transmission rate of a digital exchange network, a small radio base station controlling section accommodating a plurality of small radio base stations which are connected to PDC portable terminal units through radio circuits and which have different radio cover areas, the small radio base station controlling section managing the radio cover areas of the PDC portable terminal units, controlling calls, and controlling and managing the radio circuits, a network-side adaptor used in non-audio communications with the PDC portable terminal units, a PDC/network interface section connected to a private branch exchange through a plurality of communication paths, a time division switch for connecting the PDC/network interface, the audio processing section, the radio base station controlling section and the network-side adaptor and for switching the connection state thereof under the control of the small radio base station controlling section on time division basis.

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First Claim