| 发明名称 |
KEY TELEPHONE DEVICE |
| 摘要 |
<p>PURPOSE:The timer circuit and station line terminating detection circuit are equipped in order to perform audible display for priority order when station line and extension lines are overlapped at their signal receiving time. Thus, line-busy tone is given to the dialing person when calling extension lines.</p> |
| 申请公布号 |
JPS5251805(A) |
申请公布日期 |
1977.04.26 |
| 申请号 |
JP19750127292 |
申请日期 |
1975.10.24 |
| 申请人 |
OKI DENKI KOGYO KK;TAIKOU DENKI SEISAKUSHIYO KK |
发明人 |
OOSHIMA MASAYOSHI;WAKAMATSU ISAO;OKI AKIO;SASAKI SEIJI |
| 分类号 |
H04Q3/58;H04M9/00;H04Q5/24 |
主分类号 |
H04Q3/58 |
| 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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