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发明名称
CIRCUIT FOR MONITORING NEXT LINE OF OUTGOING TRUNK OF EXCHANGE
摘要
申请公布号
JPS6240896(A)
申请公布日期
1987.02.21
申请号
JP19850180570
申请日期
1985.08.19
申请人
NEC CORP;NIPPON TELEGR & TELEPH CORP <NTT>
发明人
KOSAKA SHINICHI;ABE SHOICHI;KAWAMURA NORIYUKI
分类号
H04Q3/42
主分类号
H04Q3/42
代理机构
代理人
主权项
地址
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