| 发明名称 |
CALLING SUBSCRIBER DISCRIMINATION SYSTEM |
| 摘要 |
PURPOSE:In order to make the discrimination of the caller at the calling station possible, through recording the caller discrimination information, without the substantial change of the conventional exchange system. |
| 申请公布号 |
JPS5218109(A) |
申请公布日期 |
1977.02.10 |
| 申请号 |
JP19750093074 |
申请日期 |
1975.08.01 |
| 申请人 |
HITACHI LTD |
发明人 |
TAWARA YOSHINORI;CHIKIRA HIROSHI |
| 分类号 |
H04M3/42;H04M1/57;H04Q3/555 |
主分类号 |
H04M3/42 |
| 代理机构 |
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代理人 |
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| 主权项 |
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| 地址 |
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