JPS61264891A - Key telephone set - Google Patents
Key telephone setInfo
- Publication number
- JPS61264891A JPS61264891A JP10552885A JP10552885A JPS61264891A JP S61264891 A JPS61264891 A JP S61264891A JP 10552885 A JP10552885 A JP 10552885A JP 10552885 A JP10552885 A JP 10552885A JP S61264891 A JPS61264891 A JP S61264891A
- Authority
- JP
- Japan
- Prior art keywords
- telephone
- wire
- key telephone
- circuit
- central office
- 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
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
- H04Q3/58—Arrangements providing connection between main exchange and sub-exchange or satellite
Landscapes
- Physics & Mathematics (AREA)
- Astronomy & Astrophysics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Sub-Exchange Stations And Push- Button Telephones (AREA)
- Interface Circuits In Exchanges (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、ボタン電話装置に関し、特に局線との通話レ
ベルとボタン電話機相互間の通話レベルを自動的に適正
レベルに設定可能にしたボタン電話装置に関する。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a button telephone device, and in particular to a button that can automatically set the conversation level with a central office line and the conversation level between key telephones to appropriate levels. Relating to telephone devices.
従来、ボタン電話装置はボタン電話機と、局線とボタン
電話機間又はボタン電話機相互の接続を行う主装置とを
有するが、局線とボタン電話機間の通話レベルとボタン
電話機相互間の通話レベルとでは、レベル差が生じてい
た。Conventionally, button telephone devices include a button telephone and a main device that connects the central office line and the button telephones or each other. , there was a level difference.
上述した従来のボタン電話装置は、局線及びボタン電話
機の通話線が2線のままで接続されているので、主装置
内で通話信号を増幅することができず、通話中の利得又
は損失は送話、受話ともに一義的に決ってしまう。した
がって、局線との通話レベルが低く、ボタン電話機相互
間の通話レベルが高くなシ通話に支障をきたすという欠
点がおった。In the conventional key telephone device described above, the central office line and the telephone line of the key telephone are connected as two wires, so the telephone signal cannot be amplified within the main device, and the gain or loss during the telephone call is Both sending and receiving calls are determined uniquely. Therefore, there was a problem in that the communication level with the central office line was low and the communication level between the key telephones was high, which hindered communication.
本発明のボタン電話装置は、ボタン電話機の接続線を収
容する電話機インターフェイス部と、局線を収容する局
線インターフェイス部と、ボタン電話機と局線及びボタ
ン電話機相互の接続とを含む接続を行なう通話路スイッ
チ部と、上記電話機インターフェイス部と上記局線イン
ターフェイス部と、上記通話路スイッチ部とを制御する
制御回路とを含むボタン電話装置において、
上記ボタン電話機の接続線を2線4線変換する2線4線
変換回路と、それぞれ変換された信号を可変増幅する可
変増幅回路と、上記局線を2線4線変換する2線4線変
換回路とを含み、上記制御回路は、上記ボタン電話機相
互通話中は、可変増幅回路の利得を適正レベルまで下げ
、上記ボタン電話機が上記局線と通話中は可変増幅回路
の利得を適正レベルまで上げることを特徴としている。The button telephone device of the present invention has a telephone interface section that accommodates a connection line of a button telephone, a central office line interface section that accommodates a central office line, and a telephone interface section that performs a connection including a central office line, a central office line, and a mutual connection between the button telephone and the central telephone. A button telephone device comprising a path switch section, a control circuit for controlling the telephone interface section, the central office line interface section, and the call path switch section, wherein a connection line of the button telephone is converted into two wires and four wires. The control circuit includes a 4-wire conversion circuit, a variable amplification circuit that variably amplifies each converted signal, and a 2-4 wire conversion circuit that converts the office line into 2-4 wires, The present invention is characterized in that the gain of the variable amplifier circuit is lowered to an appropriate level during a call, and the gain of the variable amplifier circuit is increased to an appropriate level while the button telephone is communicating with the office line.
次に、本発明の実施例について図面を参照して説明する
。Next, embodiments of the present invention will be described with reference to the drawings.
図は本発明の実施例のブロック図である。The figure is a block diagram of an embodiment of the invention.
この実施例のボタン電話装置は主装置100とボタン電
話機160,161とを有する。主装置100は、局線
インターフェイス部110と、電話機インターフェイス
部120及び130と、通話路スイッチ部140と、制
御回路150とを含み、局線インターフェイス部110
は局111170に接続する2線4線変換回路111を
含み、電話機インターフェイス部120,130はそれ
ぞれボタン電話機160,161に接続する2線4線変
換回路121゜131と、可変増幅回路122,123
.可変増幅回路132,133とを有する。通話路スイ
ッチ部140は各インターフェイス部と4?#lAの音
声ラインで接続される。また制御回路150はボタン電
話機16o。The key telephone device of this embodiment includes a main device 100 and key telephones 160 and 161. The main device 100 includes a central office line interface section 110, telephone interface sections 120 and 130, a communication path switch section 140, and a control circuit 150.
includes a 2-wire 4-wire conversion circuit 111 connected to the station 111170, and telephone interface sections 120 and 130 include 2-wire 4-wire conversion circuits 121 and 131 connected to key telephones 160 and 161, respectively, and variable amplifier circuits 122 and 123.
.. It has variable amplification circuits 132 and 133. The communication path switch section 140 is connected to each interface section and 4? Connected by #lA audio line. Further, the control circuit 150 is a button telephone 16o.
161のデータ線1601,1611と電話機インター
フェイス部120,130を介してデータを送受信し各
種ボタン押下情報に応じて主装置内各部の制御を行う。161 data lines 1601, 1611 and telephone interface sections 120, 130, and controls each section within the main device according to information on pressing various buttons.
次に、この実施例装置の動作について説明する。Next, the operation of this embodiment device will be explained.
局#170とボタン電話機160とが、局線インターフ
ェイス部110の2線4M変換回路111と、通話路ス
イッチ部140と、可変増幅回路122及び123と、
2線4線変換回路121とを介して通話中には、局線イ
ンターフェイス部110及び電話機インターフェイス部
120がらの信号を制御回路150針検出し、その検出
された信号によシ可変増幅回路122及び123の利得
を適正レベルまで上げる。The station #170 and the button telephone 160 are connected to the 2-wire 4M conversion circuit 111 of the station line interface section 110, the communication path switch section 140, the variable amplifier circuits 122 and 123,
During a call via the 2-wire 4-wire conversion circuit 121, the control circuit 150 detects signals from the office line interface section 110 and the telephone interface section 120, and uses the detected signals to control the variable amplifier circuit 122 and the telephone interface section 120. Increase the gain of 123 to an appropriate level.
次に、ボタン電話機160とボタン電話機161とが、
電話機インターフェイス部120の2線4線変換回路1
21と、可変増幅回路122及び123と、通話路スイ
ッチ部140と、可変増幅回路132及び133と、2
線4M変換回路131とを介して通話中には、電話機イ
ンターフェイス部120及び130からの信号を制御回
路150で検出し、その検出された信号によシ可変増幅
回路122及び123又は可変増幅回路132及び13
3の利得を適正レベルまで下げる。このように可変利得
増幅回路122,123,132,133は制御回路1
50によって適正レベルの音声信号を出力するよう利得
が制御される。Next, the button telephone 160 and the button telephone 161
2-wire 4-wire conversion circuit 1 of telephone interface unit 120
21, variable amplifier circuits 122 and 123, communication path switch section 140, variable amplifier circuits 132 and 133,
During a call via the line 4M conversion circuit 131, the control circuit 150 detects signals from the telephone interface units 120 and 130, and the detected signals are used to control the variable amplifier circuits 122 and 123 or the variable amplifier circuit 132. and 13
Reduce the gain of 3 to an appropriate level. In this way, the variable gain amplifier circuits 122, 123, 132, 133 are connected to the control circuit 1.
50 controls the gain so as to output an audio signal at an appropriate level.
以上説明したように本発明は、通話路を主装置内で2線
4線変換し、それぞれ変換された音声信号を可変増幅す
ることにより、局線とボタン電話機の通話レベルと、ボ
タン電話機相互間の通話レベルを自動的に適正レベルに
設定できる効果がある。As explained above, the present invention converts the call path into two or four wires within the main device and variably amplifies the converted audio signals, thereby adjusting the call level between the office line and the key telephone, and the communication between the key telephones. This has the effect of automatically setting the call level to an appropriate level.
【図面の簡単な説明】 図面は本発明の一実施例を示すブロック図である。[Brief explanation of the drawing] The drawing is a block diagram showing one embodiment of the present invention.
Claims (1)
タン電話機の接続線を収容する電話機インターフェイス
部と、局線を収容する局線インターフェイス部と、前記
ボタン電話機と前記局線及び前記ボタン電話機相互の接
続を含む接続を行なう通話路スイッチ部と、前記電話機
インターフェイス部と前記局線インターフェイス部と前
記通話路スイッチ部とを制御する制御回路とを含むボタ
ン電話装置において、 前記主装置は、さらに前記ボタン電話機の接続線を2線
4線変換する第1の2線4線変換回路と、前記局線を2
線4線変換する第2の2線4線変換回路と、前記第1の
2線4線変換回路で変換された信号を可変増幅する可変
増幅回路とを含み、前記制御回路は、前記ボタン電話機
相互通話中に前記可変増幅回路の利得を適正レベルまで
下げ、前記ボタン電話機が前記局線と通話中に前記可変
増幅回路の利得を適正レベルまで上げることを特徴とす
るボタン電話装置。Claims: The main device includes a button telephone and a main device, wherein the main device includes a telephone interface section for accommodating a connection line of the button telephone, a central office line interface section for accommodating a central office line, the button telephone and the main device. A button telephone device comprising: a communication path switch section that performs connections including connections between a central office line and the button telephone; and a control circuit that controls the telephone interface section, the central office line interface section, and the communication path switch section, The main device further includes a first 2-wire/4-wire conversion circuit that converts the connection line of the key telephone to 2-wire/4-wire;
The control circuit includes a second 2-wire 4-wire conversion circuit that performs wire-to-4 wire conversion, and a variable amplification circuit that variably amplifies the signal converted by the first 2-wire 4-wire conversion circuit, and the control circuit A key telephone device characterized in that the gain of the variable amplifier circuit is lowered to an appropriate level during a mutual call, and the gain of the variable amplifier circuit is increased to an appropriate level while the key telephone is communicating with the central office line.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10552885A JPS61264891A (en) | 1985-05-17 | 1985-05-17 | Key telephone set |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10552885A JPS61264891A (en) | 1985-05-17 | 1985-05-17 | Key telephone set |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS61264891A true JPS61264891A (en) | 1986-11-22 |
Family
ID=14410087
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10552885A Pending JPS61264891A (en) | 1985-05-17 | 1985-05-17 | Key telephone set |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS61264891A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0263247A (en) * | 1988-08-30 | 1990-03-02 | Ricoh Co Ltd | Control system for data terminal equipment |
WO1997030558A1 (en) * | 1996-02-13 | 1997-08-21 | Kabushiki Kaisha Toshiba | Digital button telephone system and extension terminal for the same |
US6263061B1 (en) | 1996-02-13 | 2001-07-17 | Kabushiki Kaish Toshiba | Digital button telephone system and extension terminal for the same |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5757099A (en) * | 1980-09-24 | 1982-04-06 | Nec Corp | Level adjusting circuit for trunk device |
JPS58168396A (en) * | 1982-03-29 | 1983-10-04 | Fujitsu Ltd | Automatic switching system of insertion loss |
-
1985
- 1985-05-17 JP JP10552885A patent/JPS61264891A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5757099A (en) * | 1980-09-24 | 1982-04-06 | Nec Corp | Level adjusting circuit for trunk device |
JPS58168396A (en) * | 1982-03-29 | 1983-10-04 | Fujitsu Ltd | Automatic switching system of insertion loss |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0263247A (en) * | 1988-08-30 | 1990-03-02 | Ricoh Co Ltd | Control system for data terminal equipment |
WO1997030558A1 (en) * | 1996-02-13 | 1997-08-21 | Kabushiki Kaisha Toshiba | Digital button telephone system and extension terminal for the same |
GB2325375A (en) * | 1996-02-13 | 1998-11-18 | Toshiba Kk | Digital button telephone system and extension terminal for the same |
GB2325375B (en) * | 1996-02-13 | 2000-12-20 | Toshiba Kk | Digital button telephone system and extension terminal for the same |
US6263061B1 (en) | 1996-02-13 | 2001-07-17 | Kabushiki Kaish Toshiba | Digital button telephone system and extension terminal for the same |
US6373924B2 (en) | 1996-02-13 | 2002-04-16 | Kabushiki Kaisha Toshiba | Digital key telephone system and extension terminal device thereof |
US6377671B2 (en) | 1996-02-13 | 2002-04-23 | Kabushiki Kaisha Toshiba | Digital key telephone system and extension terminal device thereof |
US6408060B2 (en) | 1996-02-13 | 2002-06-18 | Kabushiki Kaisha Toshiba | Digital key telephone system and extension terminal device thereof |
US6456705B1 (en) | 1996-02-13 | 2002-09-24 | Kabushiki Kaisha Toshiba | Digital key telephone system and extension terminal device thereof |
US6496576B2 (en) | 1996-02-13 | 2002-12-17 | Kabushiki Kaisha Toshiba | Digital key telephone system and extension terminal device thereof |
US6633631B2 (en) | 1996-02-13 | 2003-10-14 | Kabushiki Kaisha Toshiba | Digital key telephone system and extension terminal device thereof |
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