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发明名称
METHOD OF COMMUTATING SUBSCRIBERS' DATA TRANSMISSION CHANNELS OF AN INTEGRATED DIGITAL TELEPHONE NETWORK
摘要
申请公布号
PL102375(B1)
申请公布日期
1979.03.31
申请号
PL19770198549
申请日期
1977.05.31
申请人
发明人
分类号
H04M11/06;H04Q11/04;(IPC1-7):H04M11/06
主分类号
H04M11/06
代理机构
代理人
主权项
地址
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