SYSTEM FOR MONITORING DIGITAL SUBSCRIBER LINE,申请号JP19870162283-传众专利搜索

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发明名称	SYSTEM FOR MONITORING DIGITAL SUBSCRIBER LINE
摘要
申请公布号	JPS648756(A)	申请公布日期	1989.01.12
申请号	JP19870162283	申请日期	1987.07.01
申请人	NIPPON TELEGR & TELEPH CORP <NTT>	发明人	AKIYAMA NOBUYOSHI;KAWASHIMA MAKOTO
分类号	H04M3/24;H04L1/00	主分类号	H04M3/24
代理机构		代理人
主权项
地址

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