JPS6090952U - Incoming level detection circuit - Google Patents
Incoming level detection circuitInfo
- Publication number
- JPS6090952U JPS6090952U JP18354883U JP18354883U JPS6090952U JP S6090952 U JPS6090952 U JP S6090952U JP 18354883 U JP18354883 U JP 18354883U JP 18354883 U JP18354883 U JP 18354883U JP S6090952 U JPS6090952 U JP S6090952U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- detection circuit
- incoming call
- level detection
- incoming level
- 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
Landscapes
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Small-Scale Networks (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Selective Calling Equipment (AREA)
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
図はこの考案の一実施例を示す着信レベル検出回路の構
成を示すブロック図である。
１・・・・・・入力端子、２・・・・・・復調回路、３
・・・・・顎線−断検出回路、４・・・・・・切替スイ
ッチ、５・・・・・・出力端子、６・・・・・・減衰器
、７・・・・・・制御信号端子、８・・・・・・回線断
信号出力端子。The figure is a block diagram showing the configuration of an incoming call level detection circuit showing an embodiment of this invention. 1...Input terminal, 2...Demodulation circuit, 3
... Jaw line disconnection detection circuit, 4 ... Changeover switch, 5 ... Output terminal, 6 ... Attenuator, 7 ... Control Signal terminal, 8... Line disconnection signal output terminal.
Claims (1)
込んだ直接回路と、前記直接回路に並列に設け、レベル
設定が可能な減衰器挿入回路と、前記直接回路及び減衰
器挿入回路とを外部制御信、 号によって周期的に
切替える切替スイッチと、前記切替スイッチの出力信号
を監視し回線入力着信レベルが所定値に達した時回線断
出力信号を出力、 する回線断検出回路とを備えた
着信レベル検出回路。a direct circuit that directly takes in the incoming call No. 4 for monitoring the incoming call; an attenuator insertion circuit that is installed in parallel with the direct circuit and whose level can be set; and the direct circuit and the attenuator insertion circuit. a changeover switch that periodically switches between the circuit and the circuit using an external control signal, and a line disconnection detection circuit that monitors the output signal of the changeover switch and outputs a line disconnection output signal when the line input incoming call level reaches a predetermined value. Incoming level detection circuit with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18354883U JPS6090952U (en) | 1983-11-28 | 1983-11-28 | Incoming level detection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18354883U JPS6090952U (en) | 1983-11-28 | 1983-11-28 | Incoming level detection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6090952U true JPS6090952U (en) | 1985-06-21 |
Family
ID=30397213
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18354883U Pending JPS6090952U (en) | 1983-11-28 | 1983-11-28 | Incoming level detection circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6090952U (en) |
-
1983
- 1983-11-28 JP JP18354883U patent/JPS6090952U/en active Pending
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