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发明名称
ISDN INTERCOMMUNICATING SYSTEM, ISDN PRIVATE BRANCH OF EXCHANGE AND ISDN COMMUNICATION TERMINAL EQUIPMENT
摘要
申请公布号
JPH0391399(A)
申请公布日期
1991.04.16
申请号
JP19890227376
申请日期
1989.09.04
申请人
HITACHI LTD;HITACHI MICRO SOFTWARE SYST CO LTD
发明人
TADAMURA KATSUMI;ANZAI GENTARO;ONO SHUJI;NAKANE KEIICHI
分类号
H04Q3/58
主分类号
H04Q3/58
代理机构
代理人
主权项
地址
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