| 摘要 |
PURPOSE:To simplify the processing between processors in a system, by processing traffics exceeding the processing capability of one exchange as one system by plural exchange units and depending the processing of information not handled by each exchange unit on an exclusive processor performing centralized management. CONSTITUTION:When an incoming call is fed to a switching network through an incoming trunk ICT from an exchange network NWS, a number selected for the call is transmitted to network control processors CC1-CCs through a PCH, and the processing afterwards depends upon the subscriber access information control processor CCs. The processor CCs accesses a subscriber file of a memory Ms to recognize the area where a device MSS mounted on a car to be called is located. When the area is an area of a radio base station BS1, for example, a general-inquiry is applied to the area with data transmission through a TC1 and the BS1 to catch the device MSS mounted on the car to be called. The processor CCs selects an idle channel BWT1 with the PCH communication to the processor CC1 and sets a channel with the device MSS mounted on the car to be called. If output/input terminals bridge between switching networks, the channel is formed via a junctor J with the control of the processors CC1, CC2 of the two switching networks NW. |
