PURPOSE:To install driver units corresponding to each stage of the channel unit for a space division-type exchange an d to secure a switch control independently from other stages.
申请公布号
JPS5326510(A)
申请公布日期
1978.03.11
申请号
JP19760100890
申请日期
1976.08.24
申请人
NIPPON ELECTRIC CO;NIPPON TELEGRAPH & TELEPHONE;OKI ELECTRIC IND CO LTD;HITACHI LTD;FUJITSU LTD
