| 发明名称 |
TELEPHONE SET INTERFACE CIRCUIT |
| 摘要 |
PURPOSE:To reduce the number of relays required in the circuit, by making common use the selctor switches for subscriber call signal supply and the selector switch to draw in the subscriber line test circuit. |
| 申请公布号 |
JPS5384509(A) |
申请公布日期 |
1978.07.26 |
| 申请号 |
JP19760160554 |
申请日期 |
1976.12.29 |
| 申请人 |
FUJITSU LTD;NIPPON TELEGRAPH & TELEPHONE |
发明人 |
SAKAI TAKESHI;EDA SUSUMU;ISHIKAWA TOSHIYUKI |
| 分类号 |
H04Q3/60;H04M3/02;H04Q3/42 |
主分类号 |
H04Q3/60 |
| 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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