JPS609365U - telephone equipment - Google Patents
telephone equipmentInfo
- Publication number
- JPS609365U JPS609365U JP10048383U JP10048383U JPS609365U JP S609365 U JPS609365 U JP S609365U JP 10048383 U JP10048383 U JP 10048383U JP 10048383 U JP10048383 U JP 10048383U JP S609365 U JPS609365 U JP S609365U
- Authority
- JP
- Japan
- Prior art keywords
- dial
- detection circuit
- signal
- tone signal
- telephone
- 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
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は従来の電話装置の構成を示すブロック図、第２
図はこの考案にかかる電話装置の一実施例構成を示すブ
ロック図である。
１０・・・・・・電話機、１１・・・・・・送受話器、
１２・・・・・・キーボード、１３・・・・・・ＭＦダ
イヤル発信器、１００・・・・・・主装置、１１０・・
・・・・インターフェース、１２０Ａ、１２０Ｂ・・・
・・・内線通話回路、１２１・・・・・・ダイヤルトー
ン発生器、１２２，１２２ａ。
１２２ｂ・・・・・・スイッチ回路、１２３・・・・・
・フィルタ回路、１２４・・・・・・ＭＦダイヤル検出
回路、１２５・・・・・・制御回Ｌ１２６・・・・・・
バッファアンプ、１２７．１２８・・・・・・減衰器、
１２９・・・・・・産動アンプ、ＴＬ・・・・・・通話
線路。Figure 1 is a block diagram showing the configuration of a conventional telephone device;
The figure is a block diagram showing the configuration of an embodiment of the telephone device according to the invention. 10... Telephone, 11... Handset,
12...Keyboard, 13...MF dial transmitter, 100...Main device, 110...
...Interface, 120A, 120B...
. . . Extension telephone circuit, 121 . . . Dial tone generator, 122, 122a. 122b...Switch circuit, 123...
・Filter circuit, 124...MF dial detection circuit, 125...Control circuit L126...
Buffer amplifier, 127.128...attenuator,
129...Industrial amplifier, TL...Telephone line.
Claims (1)
を介して該主装置にダイヤル操作に対応したＭＰタイヤ
ル信号を送出する複数の電話機と、前記主装置に設けら
れ、前記通話線路にダイヤルトーン信号を送出するダイ
ヤルトーン発生回路と、前記主装置に設けられ、前記通
話線路を介して到来する前記ＭＰタイヤル信号を検出し
てこのダイヤル内容を識別するＭＦダイヤル検出回路と
を有し、このＭＦダイヤル検出回路によるダイヤル内容
の識別に基ついて当該電話機に所定の内線呼び出しを行
なわしめる電話装置において、前記ＭＦタイヤル検出回
路に入力される信号に前記通話線路へ送出中のダイヤル
トーン信号を逆位相で重畳する手段を設け、ＭＦタイヤ
ル検出回路にＭＦダイヤル信号とともに入力されるダイ
ヤルトーン信号をこの逆位相で重畳する信号により相殺
することを特徴とする電話装置。a main device connected to a plurality of communication lines; a plurality of telephones that send MP dial signals corresponding to dial operations to the main device via these communication lines; A dial tone generation circuit that sends out a tone signal; and an MF dial detection circuit that is provided in the main device and that detects the MP tire signal arriving via the communication line and identifies the contents of the dial; In a telephone device that causes the telephone to make a predetermined extension call based on identification of dial contents by an MF dial detection circuit, a dial tone signal being sent to the communication line is inversely phased with the signal input to the MF dial detection circuit. What is claimed is: 1. A telephone device comprising means for superimposing a dial tone signal at an opposite phase to cancel out a dial tone signal inputted together with an MF dial signal to an MF dial detection circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10048383U JPS609365U (en) | 1983-06-29 | 1983-06-29 | telephone equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10048383U JPS609365U (en) | 1983-06-29 | 1983-06-29 | telephone equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS609365U true JPS609365U (en) | 1985-01-22 |
Family
ID=30237688
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10048383U Pending JPS609365U (en) | 1983-06-29 | 1983-06-29 | telephone equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS609365U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5444568A (en) * | 1977-09-14 | 1979-04-09 | Honda Motor Co Ltd | Automobile average fuel consumption ratio meter |
-
1983
- 1983-06-29 JP JP10048383U patent/JPS609365U/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5444568A (en) * | 1977-09-14 | 1979-04-09 | Honda Motor Co Ltd | Automobile average fuel consumption ratio meter |
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