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发明名称
PCM TDM EXCHANGE: CENTRAL CONTROL PROCESSOR SIGNALS VIA SPEECH TRANSMISSION MEDIUM
摘要
申请公布号
NZ220220(A)
申请公布日期
1989.08.29
申请号
NZ19870220220
申请日期
1987.05.06
申请人
STC PLC
发明人
DAVIDSON, D M;GATWARD, R;BUNGARD, J R
分类号
H04J3/00;H04Q3/00;H04Q11/04;(IPC1-7):H04Q11/04
主分类号
H04J3/00
代理机构
代理人
主权项
地址
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