| 发明名称 |
TRANSMISSION SYSTEM OF RECALL CONTROL SIGNAL |
| 摘要 |
PURPOSE:To make possible simplification of keyboard manipulation for telephone exchange operator and the automatic control of the timing re-call signal in co-ordination with each respective category of exchange system of the previously-orientated exchange. |
| 申请公布号 |
JPS5217705(A) |
申请公布日期 |
1977.02.09 |
| 申请号 |
JP19750093727 |
申请日期 |
1975.07.31 |
| 申请人 |
NIPPON DENKI KK;NIPPON DENSHIN DENWA KOSHA |
发明人 |
MIURA MASAMI;MOURI RIKUROU;YAMAMOTO TAKESHI |
| 分类号 |
H04Q3/545;H04Q3/54;(IPC1-7):04Q3/54 |
主分类号 |
H04Q3/545 |
| 代理机构 |
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代理人 |
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