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发明名称
SUBSCRIBER LINE CONCENTRATION COMMUNICATION SYSTEM
摘要
申请公布号
JPH0198359(A)
申请公布日期
1989.04.17
申请号
JP19870254569
申请日期
1987.10.12
申请人
NEC CORP
发明人
OTSU TOSHIO
分类号
H04M3/42;H04M3/533;H04W28/14;H04W72/04;H04W84/14
主分类号
H04M3/42
代理机构
代理人
主权项
地址
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