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发明名称
PILOT TEST SYSTEM
摘要
PURPOSE:The pilot transmitter/receiver is installed at time division switchboard in order to perform transmission and reception of pilot signal at circulation path, In this way, the communication channel test can be quickly performed.
申请公布号
JPS5255405(A)
申请公布日期
1977.05.06
申请号
JP19750131641
申请日期
1975.10.31
申请人
FUJITSU KK;NIPPON DENSHIN DENWA KOSHA
发明人
SATOU HIROAKI;KOJIMA TAKUTO;NAITOU SHIYUNICHI;YUKUMATSU KENICHI
分类号
H04M3/26;H04Q11/04
主分类号
H04M3/26
代理机构
代理人
主权项
地址
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