发明名称 MONITOR CONTROL SYSTEM FOR PUSHHBUTTON DIAL SIGNAL
摘要 PURPOSE:To prevent the extra dial signal from being transmitted to the exchange of the remote side at the connection control time by installing the signal monitor function to the PB dial signal receiving register in PBX.
申请公布号 JPS5431208(A) 申请公布日期 1979.03.08
申请号 JP19770097640 申请日期 1977.08.15
申请人 FUJITSU LTD 发明人 SUZUKI MASAO;HAYASHI KIYOBUMI
分类号 H04Q3/58;H04Q3/62 主分类号 H04Q3/58
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