JPH01149185U - - Google Patents
Info
- Publication number
- JPH01149185U JPH01149185U JP4473088U JP4473088U JPH01149185U JP H01149185 U JPH01149185 U JP H01149185U JP 4473088 U JP4473088 U JP 4473088U JP 4473088 U JP4473088 U JP 4473088U JP H01149185 U JPH01149185 U JP H01149185U
- Authority
- JP
- Japan
- Prior art keywords
- incoming
- detection
- failure
- power
- flag
- 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
- 238000001514 detection method Methods 0.000 claims description 9
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Sub-Exchange Stations And Push- Button Telephones (AREA)
Description
第１図は第２図に示したボタン電話装置の特徴
とする動作を説明するためのフローチヤート、第
２図は本考案に係るボタン電話装置の一実施例を
示すブロツク図、第３図はこのボタン電話装置に
おいてその外線インターフエイスに含まれる着信
検出回路の具体例を示す回路図、第４図は第１図
に示したフローチヤートに基づく各部の制御状況
を示すタイムチヤートである。
１……ＫＳＵ（主装置）、４−１〜４−ｍ……
ＳＴ（ボタン電話機）、１１……ＬＩＦ（外線イ
ンターフエイス）、１１−１……着信検出回路、
１４……ＣＰＵ（プロセツサ）、１５……ＲＯＭ
（固定メモリ）、１６……ＲＡＭ（可変メモリ）
。
FIG. 1 is a flowchart for explaining the characteristic operation of the button telephone device shown in FIG. 2, FIG. 2 is a block diagram showing an embodiment of the button telephone device according to the present invention, and FIG. FIG. 4 is a circuit diagram showing a specific example of the incoming call detection circuit included in the outside line interface of this button telephone device, and is a time chart showing the control status of each part based on the flowchart shown in FIG. 1. 1...KSU (main unit), 4-1 to 4 -m ...
ST (key telephone), 11...LIF (outside line interface), 11-1 ...incoming call detection circuit,
14...CPU (processor), 15...ROM
(fixed memory), 16...RAM (variable memory)
.
Claims (1)
る着信々号を検出し、この断続検出々力によりボ
タン電話機側で前記着信々号に同期して可聴表示
を行うボタン電話装置において、前記断続検出々
力の断開始によつてスタートし断終了によつてク
リアされる断検出タイマと、前記着信々号の最初
の検出々力によつてセツトされかつ前記断検出タ
イマのタイムアツプによつてクリアされる外線着
信中フラグを発生するフラグ手段と、この外線着
信中フラグと前記断続検出々力との論理積出力に
よつてボタン電話機の可視・可聴表示を制御する
制御手段とを備えてなるボタン電話装置。 In a button telephone device, an incoming call detection circuit of a main device detects incoming calls that arrive intermittently, and the key telephone side uses the intermittently detecting power to display an audible display in synchronization with the incoming calls. a failure detection timer that is started when the detection power begins to fail and is cleared by the end of the failure; and a failure detection timer that is set by the first detection power of the incoming signal and cleared by the time-up of the failure detection timer. a flag means for generating an incoming outside call flag, and a control means for controlling a visible/audible display of the button telephone by outputting a logical product of the incoming outside call flag and the intermittent detection power. Telephone device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4473088U JPH01149185U (en) | 1988-04-04 | 1988-04-04 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4473088U JPH01149185U (en) | 1988-04-04 | 1988-04-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01149185U true JPH01149185U (en) | 1989-10-16 |
Family
ID=31271079
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4473088U Pending JPH01149185U (en) | 1988-04-04 | 1988-04-04 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01149185U (en) |
-
1988
- 1988-04-04 JP JP4473088U patent/JPH01149185U/ja active Pending