| 发明名称 |
MONITORING SYSTEM BY SUBSCRIBER LINE SCAN |
| 摘要 |
PURPOSE:To secure an economical monitoring and detection for the subscriber telephone state through simple control by obtaining a synchronization between the channel switch and the subscriber line scanning circuit. |
| 申请公布号 |
JPS52144210(A) |
申请公布日期 |
1977.12.01 |
| 申请号 |
JP19760060631 |
申请日期 |
1976.05.27 |
| 申请人 |
OKI ELECTRIC IND CO LTD |
发明人 |
FUKUDA ISAO;KURAMOCHI MITSUO;SUZUKI MASAHIKO;KAMEDA KIYOTAKA |
| 分类号 |
H04Q3/72;H04Q3/52 |
主分类号 |
H04Q3/72 |
| 代理机构 |
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代理人 |
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