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发明名称
SUBSCRIBER LINE TEST CONTROL SYSTEM FOR REMOTE LINE CONCENTRATION SWITCHING DEVICE
摘要
申请公布号
JPH02192350(A)
申请公布日期
1990.07.30
申请号
JP19890011507
申请日期
1989.01.20
申请人
NEC CORP
发明人
YAMADA KENJI
分类号
H04M3/26;H04M3/30
主分类号
H04M3/26
代理机构
代理人
主权项
地址
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