JPS63300662A - Called party reply and lockout detection system - Google Patents
Called party reply and lockout detection systemInfo
- Publication number
- JPS63300662A JPS63300662A JP13333187A JP13333187A JPS63300662A JP S63300662 A JPS63300662 A JP S63300662A JP 13333187 A JP13333187 A JP 13333187A JP 13333187 A JP13333187 A JP 13333187A JP S63300662 A JPS63300662 A JP S63300662A
- Authority
- JP
- Japan
- Prior art keywords
- polarity
- called party
- line
- lockout
- detection
- 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 title claims abstract description 48
- 230000004044 response Effects 0.000 claims description 31
- 230000007704 transition Effects 0.000 claims description 3
- 238000004891 communication Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 239000003990 capacitor Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔概要〕
2個のリレー、ホトカプラ等の電圧又は電流によって動
作する検出素子を用いて、初期の回線極性に関係なく、
被呼者応答を検出し、又ロックアウトにより給電が断と
なったことを検出するものである。[Detailed Description of the Invention] [Summary] Using detection elements such as two relays and photocouplers that operate by voltage or current, regardless of the initial line polarity,
It detects the response of the called party and also detects that the power supply has been cut off due to lockout.
本発明は、回線の極性反転による被呼者応答を検出し、
又回線給電を断とするロックアウトを検出する被呼者応
答及びロックアウト検出方式に関するものである。The present invention detects a called party response due to line polarity reversal,
The present invention also relates to a called party response and lockout detection method for detecting a lockout caused by cutting off line power supply.
端末装置を接続した網制御装置に於いては、被呼者応答
を回線の極性反転により検出し、端末装置へ通信可信号
を加えるものであり、又ロックアウトにより給電を断と
した場合に、被呼者応答と誤認しないように検出するこ
とが必要である。The network control device connected to the terminal device detects the called party's response by reversing the polarity of the line and applies a communication enable signal to the terminal device.Also, when the power supply is cut off due to lockout, It is necessary to detect this so as not to misidentify it as a called party response.
第3図は通信網の説明図であり、端末装置21.22は
それぞれ網制御装置23.24を介して交換機25に接
続されている。網制御装置23゜24は、発呼、ダイヤ
ル番号送出、被呼者応答検出、復旧等の機能を有するも
のであり、例えば、端末装置21から端末装置22に通
信する場合、端末装置21からの通信要求により、網制
御装置23は発呼し、交換[25からのダイヤル可信号
を受信することにより、端末装置22のダイヤル番号を
送出する。FIG. 3 is an explanatory diagram of a communication network, in which terminal devices 21 and 22 are connected to an exchange 25 via network control devices 23 and 24, respectively. The network control devices 23 and 24 have functions such as calling, sending a dial number, detecting a called party response, and restoring. For example, when communicating from the terminal device 21 to the terminal device 22, In response to the communication request, the network control device 23 makes a call and sends the dial number of the terminal device 22 by receiving a dialable signal from the exchange [25].
交換機25はこのダイヤル番号に対応した端末装置22
の呼出しを行い、網制御装置24は端末装置22が受信
可能状態であれば、呼出しに対してループ形成等による
応答信号を交換機25に送出する。交換機25は、この
被呼側からの応答信号によって、バス設定を行うと共に
発呼側の回線の極性を反転して被呼者応答を通知する。The exchange 25 connects the terminal device 22 corresponding to this dial number.
If the terminal device 22 is in a receivable state, the network control device 24 sends a response signal to the exchange 25 by forming a loop or the like in response to the call. Based on the response signal from the called party, the exchange 25 performs bus settings, inverts the polarity of the calling party's line, and notifies the called party of the response.
発呼側の網制御装置23は、この回線の極性反転を検出
して被呼者応答と判断し、端末装置21に通信可信号を
送出する。端末装置21はこの通信可信号によりデータ
の送出を開始する。The network control device 23 on the calling side detects this reversal of the polarity of the line, determines that it is a response from the called party, and sends a communication enable signal to the terminal device 21. The terminal device 21 starts sending data in response to this communication enable signal.
網制御装置23.24に於ける従来の被呼者応答検出回
路は、例えば、第4図に示す構成を有するものである。A conventional called party response detection circuit in the network control devices 23 and 24 has the configuration shown in FIG. 4, for example.
同図に於いて、31はフォトカプラ、32はフォトダイ
オード、33はフォトトランジスタ、34はダイオード
、35.36は抵抗、Ll、L2は回線、C1,C2は
コンデンサである。In the figure, 31 is a photocoupler, 32 is a photodiode, 33 is a phototransistor, 34 is a diode, 35.36 is a resistor, Ll and L2 are lines, and C1 and C2 are capacitors.
コンデンサCI、C2はモデム側との直流遮断用であり
、回線Ll、L2は交換機側に接続される。初期状態に
於いて、回線L1が十極性、回線L2が一極性の場合は
、抵抗35を介してダイオード34に順方向の電圧が印
加され、交換機側にループを形成することができる。又
フォトカプラ31のフォトダイオード32には逆極性の
電圧が印加されるので、フォトトランジスタ33はオフ
状態となり、検出信号はハイレベル(“1”)となる。Capacitors CI and C2 are for cutting off direct current from the modem side, and lines Ll and L2 are connected to the exchange side. In the initial state, when the line L1 is depolar and the line L2 is unipolar, a forward voltage is applied to the diode 34 via the resistor 35, and a loop can be formed on the exchange side. Further, since a voltage of opposite polarity is applied to the photodiode 32 of the photocoupler 31, the phototransistor 33 is turned off, and the detection signal becomes high level ("1").
被呼者応答により回vAL1.L2の極性が反転される
と、フォトダイオード32に順方向の電圧が印加される
ことになる。従って、フォトダイオード32が発光し、
その光が入射されるフォトトランジスタ33はオン状態
となるから、検出信号はローレベル(“0”)となる。The called party responds to vAL1. When the polarity of L2 is reversed, a forward voltage is applied to the photodiode 32. Therefore, the photodiode 32 emits light,
Since the phototransistor 33 to which the light is incident is turned on, the detection signal becomes a low level (“0”).
従って、初期状態の回線L1.L2の極性がそれぞれ+
、−であると、被呼者応答により回線L1、L2の極性
が反転されて−2+となるから、検出信号は“1”から
“0”となり、被呼者応答を検出することができる。Therefore, the line L1 in the initial state. The polarity of L2 is +
, -, the polarities of the lines L1 and L2 are reversed and become -2+ due to the called party's response, so the detection signal changes from "1" to "0" and the called party's response can be detected.
〔発明が解決しようとする問題点3
回線Ll、L2の極性を前述の場合と反対に、初期状態
に於いてそれぞれ一1十とすると、その初期状態に於け
る検出信号は“0”となる。そして、被呼者応答により
極性が反転されると、検出信号は“1”となる。このよ
うな極性の関係の場合も、検出信号が“0”から“1”
に変化することにより、被呼者応答を検出することがで
きる。[Problem 3 to be solved by the invention: Contrary to the above case, if the polarities of lines Ll and L2 are each set to 110 in the initial state, the detection signal in the initial state will be "0". . When the polarity is reversed by the called party's response, the detection signal becomes "1". Even in the case of such a polarity relationship, the detection signal changes from “0” to “1”.
The called party's response can be detected by the change in the number of calls.
しかし、この場合に於いて、被呼者話中等によりロック
アウトして回線給電を断とすると、フォトトランジスタ
33はオフ状態となるから、検出信号は“1”となる。However, in this case, if the line power supply is cut off due to lockout due to the called party talking, etc., the phototransistor 33 is turned off, so the detection signal becomes "1".
即ち、初期状態の検出信号が“0″で、ロックアウトに
より“1”となるから、被呼者応答と同様の検出信号と
なり、誤動作する欠点があった。That is, since the detection signal in the initial state is "0" and becomes "1" due to lockout, the detection signal becomes the same as the response of the called party, resulting in malfunction.
本発明は、回線の初期極性に関係なく、被呼者応答を検
出すると共に、ロックアウトの検出も可能とすることを
目的とするものである。It is an object of the present invention to detect a called party response, regardless of the initial polarity of the line, and to also be able to detect a lockout.
本発明の被呼者応答及びロックアウト検出方式は、第1
図を参照して説明すると、回線に対してそれぞれ異なる
極性で動作するフォトカプラ、リレー等の検出素子1,
2を設けて、一方の検出素子1が動作状態から非動作状
態に移行し、反対に他方の検出素子2が非動作状態から
動作状態に移行したた時に、回線の極性による被呼者応
答として検出し、2個の検出素子1.2が共に非動作状
態となった時にロックアウトとして検出するものである
。The called party response and lockout detection method of the present invention includes the first
To explain with reference to the figure, detection elements 1 such as photocouplers and relays that operate with different polarities for the line,
2 is provided, and when one detecting element 1 transitions from an active state to a non-active state, and conversely, the other detecting element 2 transitions from a non-active state to an active state, the called party responds according to the polarity of the line. A lockout is detected when both of the two detection elements 1.2 become inactive.
回線の初期極性に対応して、一方の検出素子1が動作状
態或いは非動作状態となり、他方の検出素子2が非動作
状態或いは動作状態となるから、次に回線の極性が反転
されると、一方の検出素子1は非動作状態或いは動作状
態となり、又他方の検出素子2は動作状態或いは非動作
状態となる。Corresponding to the initial polarity of the line, one of the detection elements 1 becomes active or inactive, and the other detection element 2 becomes inactive or active, so when the line polarity is reversed next, One of the sensing elements 1 is in an inactive state or in an active state, and the other sensing element 2 is in an active state or in a non-active state.
従って、各検出素子1.2の状態がそれぞれ反転すれば
、極性反転による被呼者応答を検出することができる。Therefore, if the state of each detection element 1.2 is reversed, a called party response can be detected due to polarity reversal.
又ロックアウトによる給電断の場合は、各検出素子1.
2が非動作状態となるから、被呼者応答と区別して検出
できることになる。In addition, in the case of power supply interruption due to lockout, each detection element 1.
2 is in the inactive state, so it can be detected separately from the called party's response.
以下図面を参照して本発明の実施例について詳細に説明
する。Embodiments of the present invention will be described in detail below with reference to the drawings.
第2図は本発明の実施例の要部回路図であり、11.1
2は検出素子1.2(第1図参照)としてのフォトカプ
ラ、13.14はフォトカプラの発光素子としてのフォ
トダイオード、15.16はフォトカプラの受光素子と
してのフォトトランジスタ、17〜19は抵抗、Ll、
L2は回線。FIG. 2 is a main circuit diagram of an embodiment of the present invention, and 11.1
2 is a photocoupler as a detection element 1.2 (see Figure 1), 13.14 is a photodiode as a light emitting element of the photocoupler, 15.16 is a phototransistor as a light receiving element of the photocoupler, and 17 to 19 are phototransistors. Resistance, Ll,
L2 is a line.
CI、C2はコンデンサ、PI、P2は検出信号である
。CI and C2 are capacitors, and PI and P2 are detection signals.
初期状態に於ける回線L1.L2の極性を、それぞれ+
、−とすると、フォトカプラ11からの検出信号P1は
“1″、フォトカプラ12からの検出信号P2は“0”
となる。被呼者応答により回vAL1.L2の極性を反
転すると、フォトカブう11からの検出信号P1は“0
”、フォトカプラ12からの検出信号P2は“1”とな
る。Line L1 in the initial state. Set the polarity of L2 to +
, -, the detection signal P1 from the photocoupler 11 is "1" and the detection signal P2 from the photocoupler 12 is "0".
becomes. The called party responds to vAL1. When the polarity of L2 is reversed, the detection signal P1 from the photocube 11 becomes "0".
”, the detection signal P2 from the photocoupler 12 becomes “1”.
反対に、初期状態に於ける回線L1.L2の極性をそれ
ぞれ−、十とした場合は、フォトカプラ11からの検出
信号P1は“0゛、フォトカプラ12からの検出信号P
2は“1”となり、被呼者応答により回線Ll、L2の
極性を反転すると、フォトカプラ11からの検出信号P
1は“1”、フォトカプラ12からの検出信号R2は“
0″となる。即ち、初期状態に於ける回線Ll、L2の
極性に関係なく、回vAL1.L2の極性を反転した時
には、フォトカプラ11.12からの検出信号PL、P
2はそれぞれ反転することになる。On the contrary, line L1 in the initial state. When the polarities of L2 are - and 10, respectively, the detection signal P1 from the photocoupler 11 is "0", and the detection signal P from the photocoupler 12 is "0".
2 becomes "1", and when the polarity of lines Ll and L2 is reversed by the called party's response, the detection signal P from the photocoupler 11
1 is “1”, and the detection signal R2 from the photocoupler 12 is “
0''.In other words, regardless of the polarity of the lines Ll and L2 in the initial state, when the polarity of the lines vAL1.L2 is reversed, the detection signals PL and P from the photocouplers 11.12
2 will be inverted.
又回線Ll、L2の給電断の場合は、フォトカプラlL
12からの検出信号PI、P2は何れも“1”となる。In addition, in the case of power failure of lines Ll and L2, photocoupler lL
Detection signals PI and P2 from 12 are both "1".
従って、被呼者応答と区別して検出することができる。Therefore, it can be detected separately from the called party's response.
前述の動作を次表に示す。The above operations are shown in the table below.
なお、初期は初期状態、応答は被呼者応答、Lはロック
アウト、×は給電断、+、−は回線Ll。Note that the initial state is the initial state, the response is the called party response, L is lockout, × is power cutoff, and + and - are line Ll.
L2の極性、1,0は検出信号PI、P2の論理レベル
の“1″、0″を示す。The polarity of L2, 1, 0, indicates the logic level of the detection signals PI, P2, "1", "0".
前述のように、回線の初期極性を記憶しておくことなく
、検出信号PI、P2の論理レベルの変化がそれぞれあ
った時には、回線の極性反転による被呼者応答であるこ
とを検出することができ、又検出信号P1.P2が共に
“0”となった時は、ロックアウトであることを検出す
ることができる。As mentioned above, without memorizing the initial polarity of the line, when there is a change in the logic level of the detection signals PI and P2, it is possible to detect that the called party has responded by reversing the polarity of the line. Detection signal P1. When both P2 become "0", it is possible to detect a lockout.
前述の実施例は、検出素子1,2としてフォトカプラ1
1.12を用いた場合を示すものであるが、極性に応じ
て動作、非動作となるリレーを用いることも可能である
。又トランジスタ等の半導体素子を用いることも可能で
ある。In the above embodiment, the photocoupler 1 is used as the detection elements 1 and 2.
1.12 is used, but it is also possible to use a relay that operates or does not operate depending on the polarity. It is also possible to use semiconductor elements such as transistors.
以上説明したように、本発明は、回線に対してそれぞれ
異なる極性で動作する2個の検出素子1.2を用いて、
回線の極性反転による被呼者応答と、回線の給電断によ
るロックアウトとを区別して検出することができるもの
であり、各種の初期状態の回線極性に対して、確実に被
呼者応答とロックアウトとを区別して検出できる利点が
ある。As explained above, the present invention uses two detection elements 1.2 that operate with different polarities with respect to the line,
It is able to distinguish and detect a called party's response due to reversal of line polarity and a lockout due to line power cut-off, and can reliably detect a called party's response and lockout for various initial line polarities. It has the advantage of being able to distinguish between out and out signals.
第1図は本発明の原理説明図、第2図は本発明の実施例
の要部回路図、第3図は通信網の説明図、第4図は従来
例の要部回路図である。
1.2は検出素子、Ll、L2は回線、11゜12はフ
ォトカプラ、13.14はフォトダイオード、15.1
6はフォトトランジスタである。FIG. 1 is an explanatory diagram of the principle of the present invention, FIG. 2 is a circuit diagram of an essential part of an embodiment of the invention, FIG. 3 is an explanatory diagram of a communication network, and FIG. 4 is a circuit diagram of an essential part of a conventional example. 1.2 is a detection element, Ll and L2 are lines, 11°12 is a photocoupler, 13.14 is a photodiode, 15.1
6 is a phototransistor.
Claims (1)
素子(1、2)を設け、 前記2個の検出素子(1、2)の何れか一方の検出素子
(1)が動作状態から非動作状態に移行し、他方の検出
素子(2)が非動作状態から動作状態に移行した時に、
回線の極性反転による被呼者応答として検出し、 前記2個の検出素子(1、2)が共に非動作状態となっ
た時にロックアウトとして検出することを特徴とする被
呼者応答及びロックアウト検出方式。[Scope of Claims] In a device having a network control function, two detection elements (1, 2) each operating with a different polarity with respect to a line are provided, and the two detection elements (1, 2) When one of the detection elements (1) transitions from an operating state to a non-operation state and the other detection element (2) shifts from a non-operation state to an operation state,
Called party response and lockout, characterized in that it is detected as a called party response due to polarity reversal of the line, and is detected as a lockout when both of the two detection elements (1, 2) become inactive. Detection method.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13333187A JPS63300662A (en) | 1987-05-30 | 1987-05-30 | Called party reply and lockout detection system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13333187A JPS63300662A (en) | 1987-05-30 | 1987-05-30 | Called party reply and lockout detection system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS63300662A true JPS63300662A (en) | 1988-12-07 |
Family
ID=15102219
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13333187A Pending JPS63300662A (en) | 1987-05-30 | 1987-05-30 | Called party reply and lockout detection system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS63300662A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0563838A (en) * | 1991-09-03 | 1993-03-12 | Rinnai Corp | Housing information notice system |
-
1987
- 1987-05-30 JP JP13333187A patent/JPS63300662A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0563838A (en) * | 1991-09-03 | 1993-03-12 | Rinnai Corp | Housing information notice system |
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