JPS5915354A - Receiving system for multi-frequency signal - Google Patents
Receiving system for multi-frequency signalInfo
- Publication number
- JPS5915354A JPS5915354A JP12302782A JP12302782A JPS5915354A JP S5915354 A JPS5915354 A JP S5915354A JP 12302782 A JP12302782 A JP 12302782A JP 12302782 A JP12302782 A JP 12302782A JP S5915354 A JPS5915354 A JP S5915354A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- frequency signal
- level
- information
- svt1
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q1/00—Details of selecting apparatus or arrangements
- H04Q1/18—Electrical details
- H04Q1/30—Signalling arrangements; Manipulation of signalling currents
- H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
- H04Q1/444—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
- H04Q1/45—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Monitoring And Testing Of Exchanges (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、デジタル交換機の多周波信号受信方式に関す
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a multi-frequency signal receiving system for a digital exchange.
従来、この種の多周波信号（ＰＢ倍信号ＭＦ倍信号）は
、所要の受信レベル範囲、信号継続時間範囲を予め設定
して卦き、受信信号がその範囲にあるかないか釦よって
信号の有無を判定していた。Conventionally, for this type of multi-frequency signal (PB double signal, MF double signal), the required reception level range and signal duration range are set in advance, and the presence or absence of the signal is determined by pressing a button to determine whether the received signal is within the range or not. was making a judgment.
しかし、信号処理上、受信したかしないかの２値情報で
扱われるため、受信障害が発生したとしても、どのよう
な原因に基づくものかが解らず、回線障害なのか雑音性
の障害なのか等の障害解析が難かしいという欠点がある
。However, in signal processing, it is treated as binary information, indicating whether or not it was received, so even if a reception failure occurs, it is not clear what the cause is, and whether it is a line failure or a noise-related failure. The disadvantage is that failure analysis is difficult.
本発明は、斯かる欠点に鑑みてなされたもので、信号受
信レベル、信号継続時間を多値情報で表現し、各呼毎忙
出力する機能を多周波信号受信回路に具備させることに
より、交換接続動作における障害解析能力を向上させ、
保守診断性の良い多周波信号受信方式を提供することを
目的とする。The present invention has been made in view of these drawbacks, and provides a multi-frequency signal receiving circuit with a function of expressing the signal reception level and signal duration using multi-value information and outputting the signal for each call. Improve the ability to analyze failures in connection operations,
The purpose of this invention is to provide a multi-frequency signal reception method that is easy to maintain and diagnose.
即ち、本発明は、選択信号受信時、接続先のトランク回
路と、通話路を介して接続される多周波信号受信回路を
有して成る多周波信号受信方式において、上記多周波信
号受信回路に、受信信号レベルを多値情報で出力する手
段と、受信信号の継続時間を多値情報で出力する手段と
を備えて構成され、上記目的を達成するものである。That is, the present invention provides a multi-frequency signal receiving system comprising a trunk circuit to be connected and a multi-frequency signal receiving circuit connected via a communication path when receiving a selection signal. , means for outputting the received signal level as multi-level information, and means for outputting the duration of the received signal as multi-level information, thereby achieving the above object.
以下、本発明を図面に示す実施例に基づいて説明する。Hereinafter, the present invention will be explained based on embodiments shown in the drawings.
第１図は本発明多周波信号受信方式の一実施例を示すブ
ロック図である。同図に示す本発明多周波受信方式は、
交換接続動作において、選択信号の受信時、接続先のト
ランク回路（ＴＲＫ）２と、通話路（ＮＷ）２を介して
接続される多周波信号受信器（ＳＶＴ）１を有して成る
。FIG. 1 is a block diagram showing an embodiment of the multi-frequency signal receiving system of the present invention. The multi-frequency reception system of the present invention shown in the figure is as follows:
In the switching connection operation, when a selection signal is received, a multi-frequency signal receiver (SVT) 1 is connected to a trunk circuit (TRK) 2 to be connected via a communication path (NW) 2.
多周波信号受信器（ＳＶＴ）１は、信号周波数の弁別を
するための帯域フィルタ（ＦＩＬ）１１と、信号のレベ
ルを検出するレベル検出回路（ＬＶＬＤＥＴ）１２と、
信号の継続時間を検出するタイミング検出回路（ＴＩＭ
ＤＥＴ）１３とから成る。帯域フィルタ１１Ｖｉ、従来
のものと回じである。一方、レベル検出回路１２及びタ
イミング検出回路１３は、各々本発明固有の構成であっ
て、前者は受信信号レベルを多値情報で出力する手段と
して機能し、後者は受信信号の継続時間を多値情報で出
力レベル検出回路１２及びタイミング検出回路１３の機
能を第２図をも参照して説明する。なお、第２図では、
簡単化のための受信信号を正弦波で表現しである。The multi-frequency signal receiver (SVT) 1 includes a bandpass filter (FIL) 11 for discriminating signal frequencies, a level detection circuit (LVLDET) 12 for detecting the signal level,
A timing detection circuit (TIM) that detects the duration of a signal
DET) 13. The bandpass filter 11Vi is the same as the conventional one. On the other hand, the level detection circuit 12 and the timing detection circuit 13 each have a configuration unique to the present invention, and the former functions as a means for outputting the received signal level as multi-value information, and the latter functions as a means for outputting the received signal level as multi-value information. The functions of the output level detection circuit 12 and timing detection circuit 13 will be explained with reference to FIG. 2. In addition, in Figure 2,
For simplicity, the received signal is expressed as a sine wave.
レベル検出回路１２は、受信信号が例えば±３レベルの
うちどのレベルにあるかを検出する。本実施例ではレベ
ル１にあることが検出される。一方、タイミング検出回
路１３け、受信信号の信号継続時間が例えばＴ１〜Ｔ５
のうちどの周期かを検出する。本実施例ではＴ４ で
あることが検出される。The level detection circuit 12 detects which level the received signal is at, for example, among ±3 levels. In this embodiment, level 1 is detected. On the other hand, the timing detection circuit 13 determines that the signal duration of the received signal is, for example, T1 to T5.
Detect which period of the period. In this embodiment, T4 is detected.
検出された情報は、第１図に示すように１帯域フイルタ
１１の出力をデコードした数字情報ＤＩＧＩＴ Ｋ、レ
ベル情報ＬＶＬ及びタイミング情報ＴＩＭとして付加さ
れ、交換制御装置に渡される。The detected information is added as numerical information DIGIT K, level information LVL, and timing information TIM obtained by decoding the output of the one-band filter 11, as shown in FIG. 1, and is passed to the exchange control device.
この種の情報を各呼毎に収集することで、種々の回線及
び交換システムの障害解析が可能となる。By collecting this type of information for each call, failure analysis of various lines and switching systems becomes possible.
例えば、数字情報ＤＩＧＩＴがコードエラーを生じた時
、レベル、タイミングはどうなっているかを解析するこ
とで、障害処理対策を施こすことが可能となり、交換シ
ステムの保守診断性能を向上させることができる。For example, by analyzing the level and timing when a code error occurs in the numerical information DIGIT, it is possible to take measures to handle the failure, and improve the maintenance and diagnosis performance of the replacement system. .
なお、デジタル交換機では、この種の回路はデジタルの
信号処理で扱うことができ、ハードウェア的にも小型に
構成することができる。In addition, in a digital exchange, this type of circuit can be handled by digital signal processing, and can be configured to be small in terms of hardware.
以上説明したように本発明は、多周波信号受信回路に、
受信信号のレベルの検出機能及びタイミング検出機能を
具備する構成としたことにより、障害情報の解析が容易
となり、その結果、保守診断性能を向上することができ
る効果がある。As explained above, the present invention provides a multi-frequency signal receiving circuit,
By adopting a configuration that includes a reception signal level detection function and a timing detection function, failure information can be easily analyzed, and as a result, maintenance diagnosis performance can be improved.
第１図は本発明多周波信号受信方式の一実施例を示すブ
ロック図、第２図は上記実施例に具備されるレベル検出
回路及びタイミング検出回路の機能を示す説明図である
。
１・・・多周波信号受信器（ＳＶＴ）
２・・・トランク回路（ＴＲＫ）
３・・・通話路（ＮＷ）
１１・・・帯域フィルタ（ＦＩＬ）
１２・・・レベル検出回路（ＬＶＬＤＥＴ）１３・・・
タイミング検出回路（ＴＩＭＤＥＴ）出願人 日本電
気株式会社FIG. 1 is a block diagram showing an embodiment of the multi-frequency signal receiving system of the present invention, and FIG. 2 is an explanatory diagram showing the functions of a level detection circuit and a timing detection circuit included in the above embodiment. 1...Multi-frequency signal receiver (SVT) 2...Trunk circuit (TRK) 3...Communication path (NW) 11...Band filter (FIL) 12...Level detection circuit (LVLDET) 13 ...
Timing detection circuit (TIMDET) Applicant: NEC Corporation
Claims (1)
続される多周波信号受信回路を有して成る多周波信号受
信方式ＶＣおいて、 上記多周波信号受信回路に、受信信号レベルを多値情報
で出力する手段と、受信信号の継続時間を多値情報で出
力する手段とを備えて成ることを特徴とする多周波信号
受信方式。[Claims] In a multi-frequency signal receiving system VC comprising a multi-frequency signal receiving circuit which is connected to a connected TRASHIF via a communication path when receiving a selection signal, the multi-frequency signal receiving circuit 1. A multi-frequency signal receiving system comprising: means for outputting a received signal level as multi-value information; and means for outputting a duration of the received signal as multi-value information.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12302782A JPS5915354A (en) | 1982-07-16 | 1982-07-16 | Receiving system for multi-frequency signal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12302782A JPS5915354A (en) | 1982-07-16 | 1982-07-16 | Receiving system for multi-frequency signal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5915354A true JPS5915354A (en) | 1984-01-26 |
| JPH0119679B2 JPH0119679B2 (en) | 1989-04-12 |
Family
ID=14850400
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12302782A Granted JPS5915354A (en) | 1982-07-16 | 1982-07-16 | Receiving system for multi-frequency signal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5915354A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60200670A (en) * | 1984-03-26 | 1985-10-11 | Hitachi Ltd | Signal relaying system |
-
1982
- 1982-07-16 JP JP12302782A patent/JPS5915354A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60200670A (en) * | 1984-03-26 | 1985-10-11 | Hitachi Ltd | Signal relaying system |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0119679B2 (en) | 1989-04-12 |
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