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    • 7. 发明专利
    • INFORMATION COMMUNICATION SYSTEM
    • JPH0583302A
    • 1993-04-02
    • JP24001491
    • 1991-09-19
    • FUJITSU LTD
    • KAKEMIZU MITSUAKIWAKAMOTO MASAAKIFUKAZAWA MITSUNORI
    • H04M3/42H04L12/66
    • PURPOSE:To transfer gradually a common communication network from a narrow band communication to a broad band communication by selecting an equipment suitable for the narrow band communication and the broad band communication respectively with a changeover control means in a common communication network so as to allow the narrow band communication and the broad band communication to coexist in the network. CONSTITUTION:LANs(local area networks) 19, 20 are connected via a gateway(GW) 18 and data are communicated between them. When an IN(intelligent network) service is received by a narrow band ISDN(integrated services digital network) exchange (N-CCU) 12, a narrow band IN service realization call controller (N-SSU) 16 and a narrow band IN service controller (N-SCU) 14 are selected and when an IN service is received by a broad band ISDN service exchange (C-CCU) 13, a broad band IN service realization call controller (B-SSU) 17 and a broad band IN service controller (B-SCU) 15 are selected through the changeover control of the GW 18. Thus, the use of the equipments for the communication suitable for each band is attained.