JPS62207057A - Network control unit - Google Patents

Network control unit

Info

Publication number
JPS62207057A
JPS62207057A JP4980586A JP4980586A JPS62207057A JP S62207057 A JPS62207057 A JP S62207057A JP 4980586 A JP4980586 A JP 4980586A JP 4980586 A JP4980586 A JP 4980586A JP S62207057 A JPS62207057 A JP S62207057A
Authority
JP
Japan
Prior art keywords
line
telephone
polarity
incoming
switch
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
Application number
JP4980586A
Other languages
Japanese (ja)
Inventor
Kenji Tokunaga
徳永 賢治
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by NEC Corp filed Critical NEC Corp
Priority to JP4980586A priority Critical patent/JPS62207057A/en
Publication of JPS62207057A publication Critical patent/JPS62207057A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To attain sure automatic incoming processing by providing a line switch disconnecting a telephone set from a telephone line in a short time before the operation of an incoming display ring circuit when a line polarity detector detects the polarity inversion so as to prevent erroneous off-hook of a telephone set. CONSTITUTION:When a call comes from the caller side when a network control unit is set to the automatic incoming mode, the polarity of a telephone line 1 is inverted and the inversion is detected by the line polarity detector 5. When the polarity of line is inverted, a line switch 7 disconnects the telephone set from the telephone line 1 by the switch control of the detector 5 before ringing within 0.3sec Although the telephone set does not ring by the disconnection from the line 1, an incoming display ring circuit 6 informs the presence of an incoming call to a person. After the detection of incoming for 3sec by the detector 5, the switch of the line switch 2 is switched by the control of the detector 5 to connect the line 1 to a MODEM 3 for the automatic incoming processing and a data communication terminal equipment 4 applied data communication.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明はデータ通信に用いられる網制御装置に関し、特
に自動着信処理モードの設定が行われる網制御装置に関
する。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a network control device used for data communications, and particularly to a network control device in which an automatic call processing mode is set.

〔概要〕〔overview〕

電話網の端末に備えられてデータ通信を行う網制御装置
において、 データ通信側に着信があったことを検出すると電話機の
鳴動開始時間前に電話機を回線から切り離して自動着信
処理を行うことにより、人が誤って電話機をオフフック
して自動着信処 理が行われなくなることを防止するも
のである。
When a network control device installed in a telephone network terminal that performs data communication detects an incoming call on the data communication side, it disconnects the phone from the line before the phone starts ringing and processes the incoming call automatically. This prevents people from accidentally taking their phones off-hook and preventing automatic call processing from occurring.

〔従来の技術〕[Conventional technology]

電話網を介してデータ通信を行う場合に網制御装置をそ
の電話網の端末に備えてデータ通信を行っている。
When data communication is performed via a telephone network, a network control device is provided at a terminal of the telephone network to perform data communication.

この通信システムにおいて使用される網制御装置は、従
来、電話機のフック動作を無効とする機能がなく、着信
鳴動時に人が電話機をオフフソクすることができるよう
になっていた。
Conventionally, the network control device used in this communication system does not have a function to disable the hook operation of a telephone, allowing a person to turn off the telephone when an incoming call rings.

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

しかし、従来の網制御装置では、自動着信モードに設定
されている場合の着信鳴動時に人が電話機をオフフック
すると、通常発呼側が電子計算機等のデータ処理装置で
あるため混乱を生ずる。例えば人により回線が切断され
て着信放棄処理がなされたり、また手動着信に切り換え
なければならないので、自動着信処理が有効に行われな
いおそれがあった。
However, in conventional network control devices, when a person goes off-hook when a call rings when the automatic call receiving mode is set, confusion occurs because the calling party is usually a data processing device such as a computer. For example, the line may be disconnected by a person and the incoming call is abandoned, or the call must be switched to manual incoming, so there is a risk that the automatic incoming call may not be performed effectively.

本発明は、自動着信モードが設定されているとき人が誤
って電話機をオフフックして自動着信処理が行われない
ことを防止する網制御装置を提供することを目的とする
SUMMARY OF THE INVENTION An object of the present invention is to provide a network control device that prevents a person from accidentally disconnecting a telephone and preventing automatic call processing from being performed when the automatic call reception mode is set.

C問題点を解決するための手段〕 本発明は電話回線をデータ送受信用の変復調器と電話機
とに切り替える回線切替器と、回線極性の反転により着
信を検出する回線極性検出器と、回線極性検出器の検出
結果により着信のあったことを表示する着信表示鳴動回
路とを備えた網制御装置において、 上記回線極性検出器が極性反転を検出すると上記着信表
示鳴動回路の作動前の短い時間内に電話機を電話回線か
ら切り離す回線開閉器を備えたことを特徴とする。
Means for Solving Problem C] The present invention provides a line switching device that switches a telephone line between a data transmission/reception modem and a telephone set, a line polarity detector that detects an incoming call by reversing the line polarity, and a line polarity detector. In a network control device equipped with an incoming call display ringing circuit that indicates the presence of an incoming call based on the detection result of the device, when the line polarity detector detects a polarity reversal, within a short time before the incoming call display ringing circuit is activated. It is characterized by being equipped with a line switch that disconnects the telephone from the telephone line.

上記短い時間は回線極性反転後0.3秒経過前であるこ
とが好ましい。
Preferably, the short time is before 0.3 seconds have elapsed after the line polarity is reversed.

〔作用〕[Effect]

自動着信モードが設定されているとき、回線極性の反転
を検出すると、電話機をその鳴動が始まる前に電話回線
から切り離して、一定時間経過後自動着信処理を行う。
When the automatic incoming call mode is set and a reversal of line polarity is detected, the telephone is disconnected from the telephone line before the telephone starts ringing, and automatic incoming processing is performed after a certain period of time has elapsed.

これにより、自動着信モードのとき誤って人が電話機を
オフフックして自動着信処理が行われなくなることを防
止する。
This prevents a person from erroneously taking the telephone off-hook during the automatic call reception mode and preventing automatic call reception processing from being performed.

〔実施例〕〔Example〕

本発明の実施例を図面に基づいて説明する。 Embodiments of the present invention will be described based on the drawings.

図は本発明一実施例の網制御装置の構成ブロック図であ
る。図面において、1は電話回線、2は回線切替器、3
は変復調器、4はデータ通信端末装置(DTE) 、5
は回線極性検出器、6は着信表示鳴動回路、7は回線開
閉器、8はフックスイッチ、9は送受話器である。
The figure is a block diagram of a network control device according to an embodiment of the present invention. In the drawing, 1 is a telephone line, 2 is a line switch, and 3 is a telephone line.
is a modem, 4 is a data communication terminal equipment (DTE), and 5 is a modem.
1 is a line polarity detector, 6 is an incoming call display ringing circuit, 7 is a line switch, 8 is a hook switch, and 9 is a handset.

回線切替器2は電話回線1を変復調器3側と電話機側に
切り替えるもので、その切り替えによりデータ通信端末
装置4に電話回線が接続される。
The line switch 2 switches the telephone line 1 between the modem 3 side and the telephone side, and the telephone line is connected to the data communication terminal device 4 by this switching.

自動着信モードのときは回線切替器2が変復調器3の側
に電話回線を自動的に切り替えるものである。その切り
替えは回線極性検出器5によって切替制御され、また回
線開閉器7も回線極性検出器5によりその回線開閉は制
御されている。
In the automatic call reception mode, the line switch 2 automatically switches the telephone line to the modem 3 side. The switching is controlled by the line polarity detector 5, and the line opening/closing of the line switch 7 is also controlled by the line polarity detector 5.

次に本発明実施例の動作を説明する。Next, the operation of the embodiment of the present invention will be explained.

この網制御装置が自動着信モードに設定がされていると
き発呼側から呼出しがあったとする。このときまず電話
回線1の極性が反転する。この回線極性の反転は回線極
性検出器5で検出される。
Assume that a call is received from a calling party while this network control device is set to automatic call receiving mode. At this time, first, the polarity of the telephone line 1 is reversed. This reversal of line polarity is detected by line polarity detector 5.

回線の極性が反転すると、0.3秒以内の鳴動がおきる
前に、回線極性検出器5の開閉制御により回線開閉器7
は電話機を電話回線1から切り離す。
When the polarity of the line is reversed, the line switch 7 is activated by opening/closing control of the line polarity detector 5 before the ringing occurs within 0.3 seconds.
disconnects the telephone from telephone line 1.

この電話回線1からの切り離しにより電話機は鳴動をし
ないが、着信表示鳴動回路6により人に着信があった旨
を知らせることができる。
Although the telephone does not ring due to this disconnection from the telephone line 1, the incoming call display ringing circuit 6 can notify a person that there is an incoming call.

回線極性検出器5により3秒間の着信を検出した後、回
線極性検出器5の制御により回線切替器2のスイッチを
切り替えて電話回線1を変復調器3に接続して自動着信
処理を行いデータ通信端末装置4はデータ通信を行う。
After the line polarity detector 5 detects an incoming call for 3 seconds, the line switching device 2 is switched under the control of the line polarity detector 5 to connect the telephone line 1 to the modem 3 and perform automatic incoming call processing for data communication. The terminal device 4 performs data communication.

電話通信を行うときには、回線開閉器7を復旧させるこ
とができる。既に回線切替器2が動作して電話回線lを
変復調器3に接続した後であるから電話機が電話回線1
に接続されることはな(、電話機が1!5動することは
ない。
When performing telephone communication, the line switch 7 can be restored. Since the line switching device 2 has already operated and connected the telephone line L to the modem 3, the telephone is connected to the telephone line 1.
The phone never connects (and the phone never moves).

通信が終了した後、回線切替器2のスイッチを復旧させ
て電話回線を開放する。このとき回線開閉器7が復旧し
ていてしかも電話機がオフフックしていれば、電話回線
を開放せずに通話へ移ることが可能である。
After the communication is completed, the switch of the line switching device 2 is restored to open the telephone line. At this time, if the line switch 7 is restored and the telephone is off-hook, it is possible to proceed to the call without opening the telephone line.

〔発明の効果〕〔Effect of the invention〕

以上説明したように本発明は自動着信時に回線の極性反
転を検出して電話機の鳴動前に電話機を電話回線から切
り離すことによって、人が誤って電話機をオフフックす
ることを防ぎ、確実な自動着信処理を行うことができる
As explained above, the present invention detects the polarity reversal of the line when receiving an automatic call and disconnects the telephone from the telephone line before the telephone rings, thereby preventing a person from accidentally taking the telephone off the hook and ensuring reliable automatic call processing. It can be performed.

【図面の簡単な説明】[Brief explanation of drawings]

図は本発明実施例の構成ブロック図。 ■・・・電話回線、2・・・回線切替器、3・・・変復
調器、4・・・データ通信端末装置(DTE) 、5・
・・回線極性検出器、6・・・着信表示鳴動回路、7・
・・回線開閉器、8・・・フックスイッチ、9・・・送
受話器。 特許出願人日本電気株式会社 、− 代理人 弁理士 井 出 直 孝゛′ 大を例礪瓜図
The figure is a configuration block diagram of an embodiment of the present invention. ■...Telephone line, 2...Line switch, 3...Modulator/demodulator, 4...Data communication terminal equipment (DTE), 5...
・・Line polarity detector, 6・Incoming call display ringing circuit, 7・
... Line switch, 8... Hook switch, 9... Handset. Patent Applicant: NEC Corporation, − Agent: Patent Attorney Nao Takashi Ide

Claims (2)

【特許請求の範囲】[Claims] (1)電話回線をデータ送受信用の変復調器と電話機と
に切り替える回線切替器と、 回線極性の反転により着信を検出する回線極性検出器と
、 回線極性検出器の検出結果により着信のあったことを表
示する着信表示鳴動回路と を備えた網制御装置において、 上記回線極性検出器が極性反転を検出すると上記着信表
示鳴動回路の作動前の短い時間内に電話機を電話回線か
ら切り離す回線開閉器を備えたことを特徴とする網制御
装置。
(1) A line switching device that switches the telephone line between a data transmitting/receiving modem and a telephone, a line polarity detector that detects incoming calls by reversing the line polarity, and an incoming call based on the detection result of the line polarity detector. In a network control device equipped with an incoming call display ringing circuit that displays an incoming call, when the line polarity detector detects a polarity reversal, a line switch is provided that disconnects the telephone from the telephone line within a short time before the incoming call display and ringing circuit is activated. A network control device comprising:
(2)上記短い時間は回線極性反転後0.3秒経過前で
あることを特徴とする特許請求の範囲第(1)項に記載
の網制御装置。
(2) The network control device according to claim (1), wherein the short time is before 0.3 seconds have passed after the line polarity is reversed.
JP4980586A 1986-03-07 1986-03-07 Network control unit Pending JPS62207057A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4980586A JPS62207057A (en) 1986-03-07 1986-03-07 Network control unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4980586A JPS62207057A (en) 1986-03-07 1986-03-07 Network control unit

Publications (1)

Publication Number Publication Date
JPS62207057A true JPS62207057A (en) 1987-09-11

Family

ID=12841356

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4980586A Pending JPS62207057A (en) 1986-03-07 1986-03-07 Network control unit

Country Status (1)

Country Link
JP (1) JPS62207057A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170041497A1 (en) * 2015-08-06 2017-02-09 Canon Kabushiki Kaisha Image communication apparatus, method for controlling image communication apparatus, and storage medium

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6039970A (en) * 1983-08-15 1985-03-02 Nitsuko Ltd Polarity inversion detecting circuit
JPS60210063A (en) * 1984-04-04 1985-10-22 Hitachi Ltd Facsimile device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6039970A (en) * 1983-08-15 1985-03-02 Nitsuko Ltd Polarity inversion detecting circuit
JPS60210063A (en) * 1984-04-04 1985-10-22 Hitachi Ltd Facsimile device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170041497A1 (en) * 2015-08-06 2017-02-09 Canon Kabushiki Kaisha Image communication apparatus, method for controlling image communication apparatus, and storage medium
US9866726B2 (en) * 2015-08-06 2018-01-09 Canon Kabushiki Kaisha Image communication apparatus, method for controlling image communication apparatus, and storage medium

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