| 发明名称 |
COMMON LINE SIGNAL SYSTEM |
| 摘要 |
PURPOSE:To realize transfer of control information such as call connection, etc. between switchboard units and thus to realize the control information transmission route equivallently and easily. |
| 申请公布号 |
JPS52120709(A) |
申请公布日期 |
1977.10.11 |
| 申请号 |
JP19760038001 |
申请日期 |
1976.04.05 |
| 申请人 |
NIPPON TELEGRAPH & TELEPHONE |
发明人 |
KANOU SADAHIKO;KITAMI KENICHI |
| 分类号 |
H04M7/06;H04M3/60;(IPC1-7):04M7/06 |
主分类号 |
H04M7/06 |
| 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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