JPS6239868B2 - - Google Patents

Info

Publication number
JPS6239868B2
JPS6239868B2 JP2252581A JP2252581A JPS6239868B2 JP S6239868 B2 JPS6239868 B2 JP S6239868B2 JP 2252581 A JP2252581 A JP 2252581A JP 2252581 A JP2252581 A JP 2252581A JP S6239868 B2 JPS6239868 B2 JP S6239868B2
Authority
JP
Japan
Prior art keywords
notification
reporting
transfer
switch
sub
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.)
Expired
Application number
JP2252581A
Other languages
Japanese (ja)
Other versions
JPS57136852A (en
Inventor
Tatsuo Yokoi
Motonobu Sakai
Tatsuo Sakakibara
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.)
AIPPON KK
Original Assignee
AIPPON KK
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 AIPPON KK filed Critical AIPPON KK
Priority to JP2252581A priority Critical patent/JPS57136852A/en
Publication of JPS57136852A publication Critical patent/JPS57136852A/en
Publication of JPS6239868B2 publication Critical patent/JPS6239868B2/ja
Granted legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M3/00Automatic or semi-automatic exchanges
    • H04M3/42Systems providing special services or facilities to subscribers
    • H04M3/50Centralised arrangements for answering calls; Centralised arrangements for recording messages for absent or busy subscribers ; Centralised arrangements for recording messages

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)

Description

【発明の詳細な説明】 [発明の技術分野] 本発明は通報装置に係わり、特に複数の通報系
統の子機から特定の1つの通報系統の親機への集
中機能を備えた通報装置に関するものである。
[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a reporting device, and more particularly to a reporting device having a function of concentrating from slave units of a plurality of reporting systems to a master unit of one specific reporting system. It is.

[発明の技術的背景] 従来から、親機と、複数台の子機と、前記親
機、子機間の交換制御を行なう主装置とから構成
される複数個の通報系統を備え、日常の時間帯に
よつて、系統毎の管理と集中管理が必要となる通
報装置、例えば、病院等において、昼間は各フロ
アー毎のナースセンターで管理し、夜間は一個所
で集中管理する通報装置が知られている。
[Technical Background of the Invention] Conventionally, a communication system has been equipped with a plurality of reporting systems consisting of a base unit, a plurality of slave units, and a main device that performs exchange control between the base unit and the slave units, and has been used in daily life. Notification devices that require system-specific management and centralized management depending on the time of day. For example, in hospitals, notification devices that are managed at nurse centers on each floor during the day and centrally managed in one place at night are known. It is being

この場合、主装置と子機の間に別スイツチを設
け、昼夜と夜間とで該スイツチを切換えていた
が、主装置と子機間での配線が非常に複雑になる
と共に集中管理を行なう通報系統内の主装置に
は、同系統内の子機との通報を行なうためのイン
ターフエイス部及び増幅器等の他に、他の系統内
の子機との通報を行なうためのインターフエイス
部及び増幅器等が別に必要となり非常に不経済で
あつた。
In this case, a separate switch was installed between the main unit and the slave unit, and the switch was switched between day and night, but this made the wiring between the main unit and the slave unit very complicated and required centralized control of the notifications. The main device in the system includes an interface section and amplifier for communicating with slave units in the same system, as well as an interface unit and amplifier for communicating with slave units in other systems. etc. were required separately, which was extremely uneconomical.

又、親機と主装置の間に別スイツチを設け、集
中管理を行なう通報系統内に設けた別親機に切換
えていたが、前述の問題点は解消されるとして
も、新たに親機が1台別に必要となり、その都度
スイツチを切換える必要があり、操作性、経済性
において問題があつた。
In addition, a separate switch was installed between the base unit and the main device to switch to a separate base unit within the centrally managed reporting system, but even if the above-mentioned problems were resolved, it would be difficult to install a new base unit. Each unit was required separately, and a switch had to be changed each time, which caused problems in terms of operability and economy.

[発明の目的] 本発明は以上述べた問題点を解消するためにな
されたものであり、その要旨とするところは親機
と、通報ラインを介して前記親機に接続された複
数台の子機と、前記通報ラインを介して前記親機
と前記子機間に介在され前記親機、子機間の交換
制御を行う主装置とから構成される複数個の通報
系統を備え、他の通報系統の主装置から1つの通
報系統の主装置へ、およびその逆にそれぞれ、該
通報系統の主装置を制御する転送制御ラインを接
続し、同じ通報系統内の該通報ラインに介在され
た通報スイツチと、前記通報スイツチを前記子機
からの通報ライン接続制制信号に応じて制御回路
とを各通報系統の主装置に有すると共に、前記他
の通報系統の通報スイツチの子機側端子と前記1
つの通報系統の通報スイツチの親機側端子との間
に通報転送ラインを接続し、前記通報転送ライン
に介在された転送スイツチと、前記転送スイツチ
を前記他の通報系統の該親機からの転送要求信号
に応じて閉成する制御回路とを各通報系統の主装
置に有することを特徴とする集中機能を備えた通
報装置を提供することを目的とする。
[Object of the Invention] The present invention has been made to solve the above-mentioned problems, and its gist is to provide a base unit and a plurality of slave units connected to the base unit via a reporting line. and a main device that is interposed between the base unit and the slave unit via the report line and performs exchange control between the base unit and the slave unit. A transfer control line that controls the main device of a notification system is connected from the main device of a system to the main device of one notification system, and vice versa, and a notification switch is connected to the main device of the notification system in the same notification system. and a control circuit for controlling the reporting switch in response to a reporting line connection control signal from the slave unit, in the main device of each reporting system, and a terminal on the slave unit side of the reporting switch of the other reporting system and a control circuit for controlling the reporting line connection from the slave unit.
A report transfer line is connected between the base unit side terminal of the report switch of the two report systems, and the transfer switch interposed in the report transfer line and the transfer switch are transferred from the base unit of the other report system. It is an object of the present invention to provide a reporting device with a centralized function, characterized in that the main device of each reporting system has a control circuit that is closed in response to a request signal.

[発明の実施例] 以下、図面を参照して本発明の好ましい一実施
例について詳述する。
[Embodiment of the Invention] Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the drawings.

図において、,はそれぞれ親機M1,M2
と、通報ラインl11,l21を介して前記親機に接続
された複数台の子機Sub11,Sub12,…Sub1n,
Sub21,Sub22,Sub2n…と、前記通報ラインを介
して前記親機と前記子機間に介在され前記親機、
子機間の交換制御を行なう主装置S1,S2とから構
成される通報系統である。通報系統における親
機M1と主装置S1および通報系統における親機
M2と主装置S2とはそれぞれ通報ラインl11,l21
制御用ラインl12,l22を介して接続される。通話
系統の主装置S1,S2間は通報を通報系統に転送
する通報転送ラインl3、主装置S2から主装置S1
へ、およびその逆に、前記転送の際に該通報系統
の主装置を制御する転送制御信号を送る転送制御
ラインl4,l5を介して接続される。主装置S1にお
いて、IF1は子機Sub11,Sub12,…Sub1nの端末
用インターフエイス、CPU1は端末用インターフ
エイスIF1から入力された通報信号SCAN1に応じ
て通報制御信号CALL1および通報ライン接続制
御信号CT1を出力したり、親機M1から制御用ラ
インl12を介して入力された通報応答信号に応じ
て前記通報制御信号CALL1を中止すると共に前
記通報信号SCAN1に対応した選択接続信号SEL1
を出力したり、親機M1から制御用ラインl12を介
して入力された転送要求信号に応じて転送制御信
号MS1を出力すると共に、この時端末用インター
フエイスIF1から入力された通報信号SCAN1を転
送制御ラインl5を介して通報系統の主装置S2
転送する等、種々の入力信号に対してあらかじめ
定められた制御信号を出力する中央処理装置であ
る。A11は通報ライン接続制御信号CT1と転送制
御信号MS1を入力とする論理積素子、Tr11は前記
論理積素子の出力により駆動されるトランジス
タ、Ry11は前記トランジスタTr11により制御され
るリレー、SW11は前記リレーRy11の接点で、前
記通報転送ラインl3に介在された転送スイツチで
ある。尚、論理積素子A11、トランジスタTr11
リレーRy11は該転送スイツチSW11を閉成する制
御回路C11を構成する。
In the figure, , are the base units M 1 and M 2 respectively
and a plurality of slave units Sub 11 , Sub 12 , ...Sub 1 n, connected to the base unit via reporting lines l 11 , l 21 ,
Sub 21 , Sub 22 , Sub 2 n..., which are interposed between the base unit and the slave unit via the reporting line, and the base unit,
This is a reporting system consisting of main units S 1 and S 2 that perform exchange control between slave units. Main device M 1 and main device S 1 in the reporting system and the main device in the reporting system
M 2 and main device S 2 have reporting lines l 11 , l 21 , respectively.
It is connected via control lines l 12 and l 22 . Between the main devices S 1 and S 2 of the communication system is a notification transfer line L 3 that transfers the notification to the notification system, and from the main device S 2 to the main device S 1
and vice versa, via transfer control lines l 4 and l 5 that send transfer control signals that control the main device of the notification system during the transfer. In the main device S 1 , IF 1 is a terminal interface for slave units Sub 11 , Sub 12 ,...Sub 1 n, and CPU 1 generates a report control signal in response to the report signal SCAN 1 input from the terminal interface IF 1 . CALL 1 and the notification line connection control signal CT 1 are output, or the notification control signal CALL 1 is stopped in response to a notification response signal input from the base unit M 1 via the control line l 12 , and the notification signal is Selective connection signal SEL 1 corresponding to SCAN 1
It also outputs a transfer control signal MS 1 in response to a transfer request signal input from the base unit M 1 via the control line l 12 , and also outputs a notification input from the terminal interface IF 1 at this time. It is a central processing unit that outputs predetermined control signals in response to various input signals, such as transferring the signal SCAN 1 to the main device S2 of the reporting system via the transfer control line l5 . A 11 is an AND element which inputs the notification line connection control signal CT 1 and the transfer control signal MS 1 , Tr 11 is a transistor driven by the output of the AND element, and Ry 11 is controlled by the transistor Tr 11 . Relay SW 11 is a contact point of the relay Ry 11 , and is a transfer switch interposed in the report transfer line l3 . Note that the AND element A 11 , the transistor Tr 11 ,
Relay Ry 11 constitutes a control circuit C 11 that closes the transfer switch SW 11 .

A12は通報ライン接続制御信号CT1と転送制御
信号MS1の反転信号を入力とする論理積素子、
Tr12は前記論理積素子の出力により駆動されるト
ランジスタ。Ry12は前記トランジスタTr12により
制御されるリレー、SW12は前記リレーRy12の接
点で前記通報ラインl11に介在された通報スイツ
チである。尚、論理積素子A12、トランジスタ
Tr12、リレーRy12は該通報スイツチSW12を閉成
する制御回路C12を構成する。
A 12 is an AND element that receives as input the notification line connection control signal CT 1 and the inverted signal of the transfer control signal MS 1 ;
Tr 12 is a transistor driven by the output of the AND element. Ry 12 is a relay controlled by the transistor Tr 12 , and SW 12 is a contact point of the relay Ry 12 and a notification switch interposed in the notification line l11 . Furthermore, the AND element A 12 and the transistor
Tr 12 and relay Ry 12 constitute a control circuit C 12 that closes the notification switch SW 12 .

Tr13は前記通報制御信号CALL1の出力により
駆動されるトランジスタ、Ry13は前記トランジ
スタTr13により制御され、通報発振ユニツト
OSC1の出力を前記通報ラインl11および通報転送
ラインl3へ供給するための接点SW13を有するリレ
ーである。主装置S1の転送スイツチSW11が接点
SW13に接続されているのに対し、主装置S2の転
送スイツトSW21は親機M2に直接接続されている
点を除き主装置S2の回路構成も前記主装置S1と同
様であるのでその説明は省略する。このようにし
て、通報転送ラインl3は他の通報系統の通報ス
イツチSW12の子機側端子と1つの通報系統の
通報スイツチSW22の親機側端子との間に接続さ
れる。
Tr 13 is a transistor driven by the output of the notification control signal CALL 1 , and Ry 13 is controlled by the transistor Tr 13 and is a notification oscillation unit.
This is a relay having a contact SW 13 for supplying the output of the OSC 1 to the notification line l 11 and the notification transfer line l 3 . Transfer switch SW 11 of main device S 1 is the contact
The circuit configuration of the main device S 2 is also the same as that of the main device S 1 , except that the transfer switch SW 21 of the main device S 2 is directly connected to the main device M 2 , whereas the transfer switch SW 21 of the main device S 2 is connected to the main device M 2 . Therefore, the explanation will be omitted. In this way, the notification transfer line l3 is connected between the handset side terminal of the notification switch SW 12 of the other notification system and the base unit side terminal of the notification switch SW 22 of one notification system.

以上のように構成された通報装置の動作を説明
する。
The operation of the reporting device configured as above will be explained.

まず、各通報系統,が独立しているとき、
通報系統の中央処理装置CPU1の各制御信号
CALL1、CT1、MS1および通報系統の中央処理
装置CPU2の制御信号CALL2、CT2、MS2はすべ
てLowレベル(以下Lレベルと略す)となるよう
にあらかじめ設定されている。この時、通報系統
の子機Sub11,Sub12,…Sub1nのいずれかから
の通報信号SCAN1が端末用インターフエイスIF1
を介して中央処理装置CPU1に入力されると、中
央処理装置CPU1は通報制御信号CALL1と通報ラ
イン接続制信号CT1をHighレベル(以下Hレベ
ルと略す)とし、トランジスタTr13とリレーRy13
を駆動し、その接点SW13を1側にする。かつ論
理積素子A12をアクテイブとし、その出力により
トランジスタTr12、リレーRy12を駆動し、その接
点SW12を閉じる。従つて通報発振ユニツトOSC1
からの出力を親機M1へ送り通報が完了する。
First, when each reporting system is independent,
Each control signal of the central processing unit CPU 1 of the reporting system
CALL 1 , CT 1 , MS 1 and the control signals CALL 2 , CT 2 , MS 2 of the central processing unit CPU 2 of the reporting system are all set in advance to be at Low level (hereinafter abbreviated as L level). At this time, the report signal SCAN 1 from any of the child devices Sub 11 , Sub 12 , ...Sub 1 n in the reporting system is sent to the terminal interface IF 1.
When input to central processing unit CPU 1 via Ry 13
, and set its contact SW 13 to the 1 side. Then, AND element A 12 is activated, and its output drives transistor Tr 12 and relay Ry 12 , and its contact SW 12 is closed. Therefore, the notification oscillator unit OSC 1
The output is sent to base unit M1 and the notification is completed.

親機M1からの応答信号によつて中央処理装置
CPU1は通報制御信号CALL1をLレベルにし、リ
レーRY13の接点SW13を2側にもどし親機M1への
通報を止めると共に、前記通報信号SCAN1に対
応した選択接続信号SEL1を端末用インターフエ
イスIF1に出力するので、親機と子機は相互の通
報が可能となる。
The central processing unit is activated by the response signal from the main unit M1 .
The CPU 1 sets the notification control signal CALL 1 to L level, returns the contact SW 13 of the relay RY 13 to the 2 side, stops notification to the base unit M 1 , and sends the selection connection signal SEL 1 corresponding to the notification signal SCAN 1 . Since it is output to the terminal interface IF 1 , the base unit and slave unit can communicate with each other.

通報系統において、親機、子機間の通報も前
記と同様にして可能となる。
In the reporting system, reporting between the base unit and the slave unit is also possible in the same manner as described above.

次に通報系統における子機からの通報をすべ
て通報系統の親機M2へ集中させる場合につい
て説明する。
Next, a case will be explained in which all the reports from slave devices in the reporting system are concentrated on the parent device M2 in the reporting system.

転送を希望する親機M1から制御用ラインl12
介して転送要求信号が中央制御装置CPU1に入力
されると、中央処理装置CPU1は転送制御信号
MS1と通報ライン接続制御信号CT1をHレベルと
する。この時、通報系統のいずれかの子機から
通報信号SCAN1が端末用インターフエイスIF1
介して中央処理装置CPU1に入力されると、中央
処理装置CPU1は通報制御信号CALL1をHレベル
とし、前記と同様に接点SW13を1側にすると共
に、前記通報信号SCAN1が転送制御ラインl5を介
して通報系統の中央処理装置CPU2へ入力さ
れ、中央処理装置CPU2は通報ライン接続制信号
CT2と転送制御信号MS2をHレベルとする。従つ
て主装置S1内の論理積素子A11および主装置S2
の論理積素子A21をアクテイブとし、接点SW11
SW21を閉成すると、通報発振ユニツトOSC1から
の出力が通報転送ラインl3を介して親機M2へ送ら
れる。
When a transfer request signal is input to the central control unit CPU 1 via the control line l 12 from the master device M 1 that desires transfer, the central processing unit CPU 1 receives the transfer control signal.
Set MS 1 and reporting line connection control signal CT 1 to H level. At this time, when the notification signal SCAN 1 is input from any child device in the notification system to the central processing unit CPU 1 via the terminal interface IF 1 , the central processing unit CPU 1 sets the notification control signal CALL 1 to H level. Similarly to the above, the contact SW 13 is set to the 1 side, and the notification signal SCAN 1 is input to the central processing unit CPU 2 of the notification system via the transfer control line l5 , and the central processing unit CPU 2 is connected to the notification line. control signal
CT 2 and transfer control signal MS 2 are set to H level. Therefore, the AND element A 11 in the main device S 1 and the AND element A 21 in the main device S 2 are made active, and the contact SW 11 ,
When SW 21 is closed, the output from the notification oscillation unit OSC 1 is sent to the base unit M 2 via the notification transfer line l 3 .

他の子機についても同様にしてその通報を通報
系統の親機M2へ集中させることが可能であ
る。
In the same way, it is possible to concentrate the notifications of other child devices to the parent device M2 of the reporting system.

親機M2からの応答信号は転送制御ラインl4を介
して中央処理装置CPU1へ入力され、中央処理装
置CPU1は通報制御信号CALL1をLレベルにし接
点SW13を2側にもどし、親機M2への通報を止め
ると共に、前記通報信号SCAN1に対応した選択
接続信号SEL1を端末用インターフエイスIF1に出
力するので、通報系統の子機と通報系統の親
機は通報転送ラインl3を介して相互に通報が可能
となる。
The response signal from the main unit M 2 is input to the central processing unit CPU 1 via the transfer control line l 4 , and the central processing unit CPU 1 sets the notification control signal CALL 1 to L level and returns the contact SW 13 to the 2 side. At the same time as stopping the notification to the main unit M 2 , the selection connection signal SEL 1 corresponding to the above-mentioned notification signal SCAN 1 is output to the terminal interface IF 1 , so the child unit of the reporting system and the main unit of the reporting system transfer the report. Mutual notification is possible via line l3 .

[発明の効果] 以上の実施例から明らかのように、本発明によ
れば、親機の操作によつて子機からの通報を自動
的に特定の1つの親機へ集中させることができ、
子機の配線が単純化されると共に主装置の回路構
成も簡単になり、更にまた、集中専用の親機も特
別に設けることがない等、経済的メリツトは大な
るものがある。
[Effects of the Invention] As is clear from the above embodiments, according to the present invention, reports from slave units can be automatically concentrated on one specific base unit by operating the base unit,
There are great economic advantages, such as the wiring of the slave unit being simplified, the circuit configuration of the main unit being simplified, and the need for a separate master unit for central use.

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

図は本発明による集中機能を備えた通報装置の
一実施例を示す回路図である。 ,……通報系統、M1,M2……親機、
Sub11,Sub12,…Sub1n,Sub21,Sub22,…
Sub2n……子機、S1,S2……主装置、l11,l21……
通報ライン、l12,l22……制御用ライン、l3……通
報転送ライン、l4,l5……転送制御ライン、
SW12,SW22……通報スイツチ、SW11,SW21
…転送スイツチ、C12,C22……通報スイツチ制御
回路、C11,C21……転送スイツチ制御回路。
The figure is a circuit diagram showing an embodiment of a reporting device with a centralized function according to the present invention. , ...reporting system, M 1 , M 2 ...base unit,
Sub 11 , Sub 12 ,...Sub 1 n, Sub 21 , Sub 22 ,...
Sub 2 n...Slave unit, S 1 , S 2 ...Main unit, l 11 , l 21 ...
Notification line, l12 , l22 ...control line, l3 ...notification transfer line, l4 , l5 ...transfer control line,
SW 12 , SW 22 ...Notification switch, SW 11 , SW 21 ...
... Transfer switch, C 12 , C 22 ... Notification switch control circuit, C 11 , C 21 ... Transfer switch control circuit.

Claims (1)

【特許請求の範囲】[Claims] 1 親機M1,M2と、通報ラインl11,l21を介して
前記親機に接続された複数台の子機Sub11
Sub1n,Sub21…Sub2nと、前記通報ラインを介し
て前記親機と前記子機間に介在され前記親機、子
機間の交換制御を行う主装置S1,S2とから構成さ
れる複数個の通報系統,を備え、他の通報系
統の主装置S1から1つの通報系統の主装置S2
へ、およびその逆にそれぞれ、該通報系統の主装
置を制御する転送制御ラインl4,l5を接続し、同
じ通報系統内の該通報ラインに介在された通報ス
イツチSW12,SW22と、前記通報スイツチを前記
子機からの通報ライン接続制御信号に応じて閉成
する制御回路C12,C22とを各通報系統の主装置に
有すると共に、前記他の通報系統の通報スイツ
チSW12の子機側端子と前記1つの通報系統の
通報スイツチSW22の親機側端子との間に通報転
送ラインl3を接続し、前記通報転送ラインに介在
された転送スイツチSW11,SW21と、前記転送ス
イツチを前記他の通報系統の該親機からの転送要
求信号に応じて閉成する制御回路C11,C22とを各
通報系統の主装置に有することを特徴とする集中
機能を備えた通報装置。
1 Base units M 1 and M 2 and a plurality of slave units Sub 11 connected to the base unit via reporting lines l 11 and l 21 ...
Sub 1 n, Sub 21 ...Sub 2 n, and main devices S 1 and S 2 that are interposed between the parent device and the child device via the notification line and perform exchange control between the parent device and the child device. The main device S 1 of the other notification system to the main device S 2 of one notification system is provided.
Transfer control lines L4 and L5 for controlling the main devices of the reporting system are connected to and vice versa, respectively, and reporting switches SW12 and SW22 are connected to the reporting lines in the same reporting system, The main device of each notification system includes control circuits C 12 and C 22 that close the notification switch in response to a notification line connection control signal from the child device, and the notification switch SW 12 of the other notification system has A report transfer line L3 is connected between the handset side terminal and the parent unit side terminal of the report switch SW 22 of the one report system, and transfer switches SW 11 and SW 21 are interposed in the report transfer line, A centralized function characterized in that the main device of each notification system includes control circuits C 11 and C 22 that close the transfer switch in response to a transfer request signal from the base unit of the other notification system. reporting device.
JP2252581A 1981-02-18 1981-02-18 Informing device equipped with centralizing function Granted JPS57136852A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2252581A JPS57136852A (en) 1981-02-18 1981-02-18 Informing device equipped with centralizing function

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2252581A JPS57136852A (en) 1981-02-18 1981-02-18 Informing device equipped with centralizing function

Publications (2)

Publication Number Publication Date
JPS57136852A JPS57136852A (en) 1982-08-24
JPS6239868B2 true JPS6239868B2 (en) 1987-08-25

Family

ID=12085197

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2252581A Granted JPS57136852A (en) 1981-02-18 1981-02-18 Informing device equipped with centralizing function

Country Status (1)

Country Link
JP (1) JPS57136852A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60180362A (en) * 1984-02-28 1985-09-14 Tokyo Tatsuno Co Ltd Interphone

Also Published As

Publication number Publication date
JPS57136852A (en) 1982-08-24

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