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JPS63173497A - Key telephone - Google Patents

Key telephone

Info

Publication number
JPS63173497A
JPS63173497A JP535787A JP535787A JPS63173497A JP S63173497 A JPS63173497 A JP S63173497A JP 535787 A JP535787 A JP 535787A JP 535787 A JP535787 A JP 535787A JP S63173497 A JPS63173497 A JP S63173497A
Authority
JP
Japan
Prior art keywords
control signal
signal line
key telephone
control
exchange
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
JP535787A
Other languages
Japanese (ja)
Inventor
Katsuhiro Hiromatsu
廣松 克簡
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP535787A priority Critical patent/JPS63173497A/en
Publication of JPS63173497A publication Critical patent/JPS63173497A/en
Pending legal-status Critical Current

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  • Sub-Exchange Stations And Push- Button Telephones (AREA)

Abstract

PURPOSE:To control many key telephone sets by means of one pair of a control signal line by providing a means to supervise the state of the control signal line, and a controlling means to control the outgoing of a control signal when the control signal exists on the control signal line. CONSTITUTION:The key telephone set 7 is provided with a transmission circuit 9 and a receiving circuit 10, for the transmission of the control signal and a console. Then, the transmission circuit 9 and the receiving circuit 10 are connected to the control signal line 6 through a pulse transformer 11. A CPU 8 checks by the supervising means 12 whether the control signal exists on the control signal line 6 or not, at a step (a). Then, when the control signal exists on the control signal line 6, it restrains the outgoing of the control signal by a restraining means 13. Namely, because the outgoing of the control signal from the key telephone set 7 is restrained when the control signal is transmitted and received between another key telephone set 7 and the exchange 1, the same control signal line can connect plural number of the key telephone sets 7 in parallel.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は交換機と音声信号線および制御信号線によって
結ばれるキーテレホンに関するものである。
DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a key telephone connected to an exchange by voice signal lines and control signal lines.

従来の技術 交換機と音声信号線および制御信号線によって結ばれる
キーテレホンは交換機と種々の制御信号を送受するため
多くの機能を有している。
Prior Art A key telephone connected to a switchboard by voice signal lines and control signal lines has many functions for transmitting and receiving various control signals to and from the switchboard.

以下従来のキーテレホンと交換機について説明を行なう
The conventional key telephone and switchboard will be explained below.

1は交換機であり、この中に制御信号の送信手段2、制
御信号の受信回路3が設けられている。
Reference numeral 1 denotes an exchange, in which a control signal transmitting means 2 and a control signal receiving circuit 3 are provided.

そして送受される制御信号は中央処理装置(以下CPU
と略す)4によって発生あるいは識別される。また送信
回路2および受信回路3はパルストランス5を介して制
御信号線6に接続されている。
The control signals sent and received are processed by the central processing unit (CPU).
(abbreviated as )4). Further, the transmitting circuit 2 and the receiving circuit 3 are connected to a control signal line 6 via a pulse transformer 5.

そして上記の送信手段2、受信回路3、CPU4、パル
ストランス5、制御信号線6はキーアレホン7の接続さ
れる数だけ用意されている。キーテレホン7には制御信
号の送信および受信のために送信回路9および受信回路
10が設けられている。
The above-mentioned transmitting means 2, receiving circuit 3, CPU 4, pulse transformer 5, and control signal line 6 are prepared as many as the number of key-alephones 7 to be connected. The key telephone 7 is provided with a transmitting circuit 9 and a receiving circuit 10 for transmitting and receiving control signals.

そして送信回路9および受信回路10はパルストランス
11を介して制御信号線6に接続されている。また8は
CPUであり、送信回路9によって送信される制御信号
を発生し、受信回路10によって受信される制御信号を
識別する。さらにキーテレホン7と交換機1の間には音
声信号の線路(図示せず)が接続されている。
The transmitting circuit 9 and the receiving circuit 10 are connected to the control signal line 6 via a pulse transformer 11. Further, 8 is a CPU, which generates a control signal transmitted by the transmitting circuit 9 and identifies a control signal received by the receiving circuit 10. Furthermore, a voice signal line (not shown) is connected between the key telephone 7 and the exchange 1.

従来のキーテレホン7と交換機1は以上のように構成さ
れ、ダイヤル信号の送信のためのデータや、回線の保留
など多(の機能に関する制御信号を制御信号線6を介し
てキーテレホン7と交換機1の間で送受する。
The conventional key telephone 7 and exchange 1 are configured as described above, and control signals related to various functions such as data for transmitting dial signals and line hold are transmitted to the key telephone 7 and the exchange via the control signal line 6. Send and receive data between 1 and 1.

発明が解決しようとする問題点 このようにキーテレホンは交換機との間で制御信号を送
受する制御信号線を有しているため、多くの機能を持っ
ているが、制御信号線は各キーテレホン用に独自に設け
なければならず、多くのキーテレホンを設置する場合、
非常に多くの配線をしなければならなかった。
Problems to be Solved by the Invention As described above, key telephones have many functions because they have a control signal line that sends and receives control signals to and from the exchange, but the control signal line is unique to each key telephone. If you install many key telephones,
I had to do a lot of wiring.

本発明は以上の点に着目してなされたものであり、一対
の制御信号線によって多くのキーテレホンを制御するこ
とのできるキーテレホンを提供するものである。
The present invention has been made with attention to the above points, and an object thereof is to provide a key telephone that can control many key telephones by a pair of control signal lines.

問題点を解決するための手段 本発明は以上の問題点を解決するため制御信号線の状態
を監視する手段と、制御信号線に制御信号が存在する時
には制御信号の送出を制限する制御手段を設けたもので
ある。
Means for Solving the Problems In order to solve the above problems, the present invention provides means for monitoring the state of the control signal line, and control means for restricting the sending of the control signal when the control signal is present on the control signal line. It was established.

作  用 本発明は以上の手段よりなるため、交換機といずれかの
キーテレホンとが制御信号の送受を行なっている時に制
御信号の送出をすることがない。
Operation Since the present invention is comprised of the above-described means, no control signal is transmitted when the exchange and any key telephone are transmitting and receiving control signals.

実  施  例 以下本発明のキーテレホンの実施例について詳細に説明
をする。
Embodiments Hereinafter, embodiments of the key telephone of the present invention will be described in detail.

第1図は本発明のキーテレホンの一実施例に於けるブロ
ック図である。ここで1は交換機であり、この交換機1
の構成は上記の従来例で説明をした交換機1と全く同一
であり、説明を省略する。またキーテレホン7の内で従
来と同じ機能を有する部分については同じ番号を付す。
FIG. 1 is a block diagram of an embodiment of the key telephone of the present invention. Here, 1 is an exchange, and this exchange 1
The configuration is exactly the same as the exchange 1 described in the above conventional example, and the explanation will be omitted. Also, parts of the key telephone 7 that have the same functions as the conventional ones are given the same numbers.

キーテレホン7には制御信号の送信および受信のために
送信回路9および受信回路10が設けられている。そし
て送信回路9および受信回路10はパルストランス11
を介して制御信号線6に接続されている。また8はCP
Uであり、送信回路9によって送信される制御信号を発
生し、受信回路10によって受信される制御信号を識別
する。12は制御信号線6の監視手段であり、制御信号
線6に交換機1または他のキーテレホン7からの制御信
号が載っていないか監視をする手段である。13は制限
手段であり、CPU8により制御信号の送出を制限する
手段である。さらにキーテレホン7と交換機1の間には
音声信号の線路(図示せず)が接続されている。
The key telephone 7 is provided with a transmitting circuit 9 and a receiving circuit 10 for transmitting and receiving control signals. The transmitting circuit 9 and the receiving circuit 10 are connected to a pulse transformer 11.
It is connected to the control signal line 6 via. Also 8 is CP
U, which generates the control signals transmitted by the transmitting circuit 9 and identifies the control signals received by the receiving circuit 10. Reference numeral 12 denotes a monitoring means for the control signal line 6, which monitors whether a control signal from the exchange 1 or another key telephone 7 is carried on the control signal line 6. Reference numeral 13 denotes a limiting means, which is a means for limiting the sending of control signals by the CPU 8. Furthermore, a voice signal line (not shown) is connected between the key telephone 7 and the exchange 1.

本発明のキーテレホンは以上のように構成され以下その
動作について説明をする。本発明のキーテレホンの動作
の内、制御信号の送出動作について説明をする。第2図
に本発明のキーテレホンのCPU8の動作の内、制御信
号の送出動作のフローを示す。先ずCPU8はステップ
aで監視手段1゜2によって制御信号線6上に制御信号
が載っているか否かチェックする。そして制御信号線6
上に制御信号が載っている場合はステップbで制限手段
13によって制御信号の送出を制限する。制御信号線6
上に制御信号が載っていない場合はステップCに行き、
ここで送信すべき制御信号があればステップdで制御信
号の送信を行なう。つまり本発明のキーテレホン7は、
他のキーテレホン7と交換機1の間で制御信号の送受が
ある場合に制御信号の送出が制限されるため、同一の制
御信号線に並列に複数のキーテレホン7を接続すること
ができる。
The key telephone of the present invention is constructed as described above, and its operation will be explained below. Among the operations of the key telephone of the present invention, the control signal sending operation will be explained. FIG. 2 shows the flow of the control signal sending operation among the operations of the CPU 8 of the key telephone of the present invention. First, in step a, the CPU 8 checks whether a control signal is present on the control signal line 6 by means of the monitoring means 1.about.2. and control signal line 6
If a control signal is placed thereon, the sending of the control signal is restricted by the restriction means 13 in step b. Control signal line 6
If there is no control signal listed above, go to step C.
If there is a control signal to be transmitted here, the control signal is transmitted in step d. In other words, the key telephone 7 of the present invention is
Since the transmission of control signals is restricted when control signals are transmitted and received between other key telephones 7 and the exchange 1, a plurality of key telephones 7 can be connected in parallel to the same control signal line.

発明の効果 本発明は以上のように、制御信号線の状態を監視する手
段と、制御信号線に制御信号が存在する時には制御信号
の送出を制限する制御手段を設けたものであるため、他
のキーテレホンと交換機の間で制御信号の送受がある場
合に制御信号の送出が制限されるため、同一の制御信号
線に並列に複数のキーテレホンを接続することができ、
多数のキーテレホンを交換機と接続する場合にも配線が
複雑になることはない。
Effects of the Invention As described above, the present invention is provided with a means for monitoring the state of a control signal line and a control means for restricting the transmission of a control signal when a control signal is present on the control signal line. Since the transmission of control signals is restricted when there is transmission and reception of control signals between the key telephone and the exchange, multiple key telephones can be connected in parallel to the same control signal line.
Wiring does not become complicated even when a large number of key telephones are connected to an exchange.

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

第1図は本発明のキーテレホンのブロック図、第2図は
同動作を示すフローチャート、第3図は従来のキーテレ
ホンのブロック図である。 6・・・制御信号線       7・・・キーテレホ
ン8・・・CPU   9・・・送信回路 10・・・
受信回路11・・・パルストランス    12・・・
監視手段13・・・制限手段 代理人の氏名 弁理士 中尾敏男 ほか1名/−−−交
換機 5− パルストランス 11−  パルストラ〉ス 第2図 /−一一文摘磯 5− パルストラシス 6− 信号線 7− キーテレホン
FIG. 1 is a block diagram of a key telephone according to the present invention, FIG. 2 is a flowchart showing the same operation, and FIG. 3 is a block diagram of a conventional key telephone. 6... Control signal line 7... Key telephone 8... CPU 9... Transmission circuit 10...
Receiving circuit 11...Pulse transformer 12...
Monitoring means 13...Name of agent for restricting means Patent attorney Toshio Nakao and 1 other person/- Switching machine 5- Pulse transformer 11- Pulse transformer Fig. 2/-11 Mon Tsuriso 5- Pulse transformer 6- Signal line 7- Key telephone

Claims (1)

【特許請求の範囲】[Claims] 制御信号線の状態を監視する監視手段と、制御信号線へ
の制御信号の送出を制限する制御手段と、前記監視手段
によって制御信号線上に制御信号が存在することを検出
した場合制御信号の送出を制限するよう前記制限手段を
動作させる制御手段とを設けたことを特徴とするキーテ
レホン。
monitoring means for monitoring the state of the control signal line; control means for restricting the sending of the control signal to the control signal line; and sending of the control signal when the monitoring means detects that the control signal is present on the control signal line. and control means for operating the limiting means to limit the key telephone.
JP535787A 1987-01-13 1987-01-13 Key telephone Pending JPS63173497A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP535787A JPS63173497A (en) 1987-01-13 1987-01-13 Key telephone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP535787A JPS63173497A (en) 1987-01-13 1987-01-13 Key telephone

Publications (1)

Publication Number Publication Date
JPS63173497A true JPS63173497A (en) 1988-07-18

Family

ID=11608924

Family Applications (1)

Application Number Title Priority Date Filing Date
JP535787A Pending JPS63173497A (en) 1987-01-13 1987-01-13 Key telephone

Country Status (1)

Country Link
JP (1) JPS63173497A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5776962A (en) * 1980-10-31 1982-05-14 Nitsuko Ltd Button telephone set
JPS61228799A (en) * 1985-04-03 1986-10-11 Nec Corp Signal channel communication system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5776962A (en) * 1980-10-31 1982-05-14 Nitsuko Ltd Button telephone set
JPS61228799A (en) * 1985-04-03 1986-10-11 Nec Corp Signal channel communication system

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