JPS6315644U - - Google Patents
Info
- Publication number
- JPS6315644U JPS6315644U JP10691886U JP10691886U JPS6315644U JP S6315644 U JPS6315644 U JP S6315644U JP 10691886 U JP10691886 U JP 10691886U JP 10691886 U JP10691886 U JP 10691886U JP S6315644 U JPS6315644 U JP S6315644U
- Authority
- JP
- Japan
- Prior art keywords
- detection circuit
- incoming call
- current
- current detection
- relay
- 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 10
- 239000003990 capacitor Substances 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
Description
第１図は、本考案に係る着信検出回路を具備し
て成るＰＢＸの構成を示すブロツク図、第２図ａ
およびｂは、第１図のＰＢＸを局交換機に接続し
た場合の着信呼出し制御前後における端子１の電
圧およびリレー３０２の電流の変化を示すタイム
チヤート、第３図ａおよびｂは、第１図のＰＢＸ
をＰＢＸに接続した場合の着信呼出し制御前後に
おける端子１の電圧およびリレー３０２の電流の
変化を示すタイムチヤート、第４図は、局交換機
による一般的な着信呼出し制御を説明するための
概念図、第５図は、ＰＢＸによる一般的な着信呼
出し制御を説明するための概念図、第６図は、従
来の着信検出回路を具備して成るＰＢＸの構成を
示すブロツク図である。
１，２……端子、３００……着信検出回路、３
０１……ダイオードブリツジ、３０２……リレー
、３０３……コンデンサ、３０４……ダイオード
、３０２０……リレー３０２の接点、４……選択
信号送出回路、５……被呼応答検出回路、５０…
…リレー、５００……リレー５０の接点、６……
制御回路、７……ＣＭＬリレー、７０，７１……
ＣＭＬリレー７の接点、８……チヨークコイル、
９，１０……カツプリングコンデンサ、１１……
通話回路。
FIG. 1 is a block diagram showing the configuration of a PBX equipped with an incoming call detection circuit according to the present invention, and FIG.
3 and b are time charts showing changes in the voltage of terminal 1 and the current of relay 302 before and after incoming call control when the PBX of FIG. 1 is connected to a central office exchange, and FIGS. PBX
A time chart showing changes in the voltage of terminal 1 and the current of relay 302 before and after incoming call control when connected to a PBX, FIG. FIG. 5 is a conceptual diagram for explaining general incoming call control by a PBX, and FIG. 6 is a block diagram showing the configuration of a PBX equipped with a conventional incoming call detection circuit. 1, 2...terminal, 300...incoming call detection circuit, 3
01... Diode bridge, 302... Relay, 303... Capacitor, 304... Diode, 3020... Contact of relay 302, 4... Selection signal sending circuit, 5... Called response detection circuit, 50...
...Relay, 500... Contact of relay 50, 6...
Control circuit, 7...CML relay, 70, 71...
Contact point of CML relay 7, 8...Chiyoke coil,
9, 10... Coupling capacitor, 11...
call circuit.
Claims (1)
される端子間の電流を検出する電流検出回路と、 該電流検出回路に対して直列に接続されるコン
デンサとダイオードとの並列回路と を具備し、前記電流検出回路の検出出力にもとづ
き前記局交換機または前記構内交換機からの呼出
し信号の着信を共に検出するようにしたことを特
徴とする着信検出回路。[Claim for Utility Model Registration] A current detection circuit that detects the current between terminals connected to the central line of a central office exchange or an extension line of a private branch exchange, and a capacitor and a diode connected in series to the current detection circuit. An incoming call detection circuit, characterized in that the incoming call detection circuit comprises a parallel circuit, and is configured to detect incoming call signals from the central office exchange or the private branch exchange based on the detection output of the current detection circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10691886U JPS6315644U (en) | 1986-07-11 | 1986-07-11 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10691886U JPS6315644U (en) | 1986-07-11 | 1986-07-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6315644U true JPS6315644U (en) | 1988-02-02 |
Family
ID=30982720
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10691886U Pending JPS6315644U (en) | 1986-07-11 | 1986-07-11 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6315644U (en) |
-
1986
- 1986-07-11 JP JP10691886U patent/JPS6315644U/ja active Pending
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