JPS6234841U - - Google Patents
Info
- Publication number
- JPS6234841U JPS6234841U JP12584385U JP12584385U JPS6234841U JP S6234841 U JPS6234841 U JP S6234841U JP 12584385 U JP12584385 U JP 12584385U JP 12584385 U JP12584385 U JP 12584385U JP S6234841 U JPS6234841 U JP S6234841U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- ring signal
- preliminary
- arrival
- telephone
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000012544 monitoring process Methods 0.000 claims description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
Description
第１図は本考案の実施例のブロツク図である。
１……呼出信号検出回路、２……変成器、３…
…ベル、４……応答検出回路、５……時限監視回
路、６……予備呼出信号制御回路、７……ブザー
。
FIG. 1 is a block diagram of an embodiment of the present invention. 1... Calling signal detection circuit, 2... Transformer, 3...
... Bell, 4 ... Response detection circuit, 5 ... Time limit monitoring circuit, 6 ... Preliminary ringing signal control circuit, 7 ... Buzzer.
Claims (1)
電話機において、呼出信号を受信しこの呼出信号
の到来からの時間を監視する時限監視回路と、前
記時限監視回路により呼出信号が到来してから所
定の時間が経過したときに動作する予備呼出信号
回路とを備えることを特徴とする予備呼出信号回
路付き電話機。 A telephone with a standby ring signal circuit connected to an automatic exchange has a time limit monitoring circuit that receives a ring signal and monitors the time from the arrival of the ring signal, and a predetermined time period from the arrival of the ring signal by the time limit monitor circuit. 1. A telephone with a preliminary ringing signal circuit, characterized in that it is equipped with a preliminary ringing signal circuit that operates when the period has elapsed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12584385U JPS6234841U (en) | 1985-08-16 | 1985-08-16 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12584385U JPS6234841U (en) | 1985-08-16 | 1985-08-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6234841U true JPS6234841U (en) | 1987-02-28 |
Family
ID=31019092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12584385U Pending JPS6234841U (en) | 1985-08-16 | 1985-08-16 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6234841U (en) |
-
1985
- 1985-08-16 JP JP12584385U patent/JPS6234841U/ja active Pending
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