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1.All-busy trunk signalling in common control telephone switchboards 失效
标题翻译: 通用控制电话交换机中的所有BUSY TRUNK信令公开(公告)号:US3513262A
公开(公告)日:1970-05-19
申请号:US3513262D
申请日:1967-04-11
申请人: NIPPON TELEGRAPH & TELEPHONE , NIPPON ELECTRIC CO , OKI ELECTRIC IND CO LTD , HITACHI LTD , FUJITSU LTD
发明人: FUKUTOMI REIJIRO , IWAI YOSHIHITO , ANDO TOSHIO , KONTANI TAKEO , NAKAMURA HIROSHI , KAMEYAMA IWAO , HIRAGI SADAYUKI , KURAHASHI SHIGEAKI , TAKEMORI SATOSI , OKADA TOMOO , IZEKI AKIRA
CPC分类号: H04Q3/54