| 发明名称 |
CHANNEL HOLDING SYSTEM OF SERVICE EQUIPMENT |
| 摘要 |
PURPOSE:To make the service possible between a called subscriber and the operator by holding the channel between them even after the channel is released between a calling subscriber and a malicious call searching device. |
| 申请公布号 |
JPS5360507(A) |
申请公布日期 |
1978.05.31 |
| 申请号 |
JP19760135305 |
申请日期 |
1976.11.12 |
| 申请人 |
HITACHI LTD |
发明人 |
CHIKIRA HIROSHI;TAWARA YOSHINORI;IINO YUKIO;HAYAKAWA YOSHIHIKO |
| 分类号 |
H04M3/42;H04M3/60;H04Q3/72 |
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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