JPH0119679B2 - - Google Patents
Info
- Publication number
- JPH0119679B2 JPH0119679B2 JP12302782A JP12302782A JPH0119679B2 JP H0119679 B2 JPH0119679 B2 JP H0119679B2 JP 12302782 A JP12302782 A JP 12302782A JP 12302782 A JP12302782 A JP 12302782A JP H0119679 B2 JPH0119679 B2 JP H0119679B2
- Authority
- JP
- Japan
- Prior art keywords
- signal
- frequency signal
- level
- detection circuit
- information
- 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
Links
- 238000001514 detection method Methods 0.000 description 14
- 238000010586 diagram Methods 0.000 description 3
- 238000003745 diagnosis Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
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)
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信号、MF信
号等）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おき、受信信号がその範囲に
あるかないかによつて信号の有無を判定してい
た。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。 Conventionally, for this type of multi-frequency signal (PB signal, MF signal, etc.), the required reception level range and signal duration range are set in advance, and the presence or absence of the signal is determined depending on whether the received signal is within the range or not. I was judging. 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、各呼毎に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 to express the signal reception level and signal duration using multi-value information and output it for each call. The purpose of this paper is to provide a multi-frequency signal reception system that improves the ability to analyze failures in connection operations and 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
を示すブロツク図である。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. In the multi-frequency reception system of the present invention shown in the same figure, in the exchange connection operation, when receiving a selection signal, the trunk circuit (TRK) 2 of the connection destination,
It comprises a multi-frequency signal receiver (SVT) 1 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イルタ（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（TIMDET）１３とから成
る。帯域フイルタ１１は、従来のものと同じであ
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つて、
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
情報で出力する手段として機能する。 A multi-frequency signal receiver (SVT) 1 includes a bandpass filter (FIL) 11 for discriminating signal frequencies.
, a level detection circuit (LVLDET) 12 that detects the signal level, and a timing detection circuit (TIMDET) 13 that detects the duration of the signal. The bandpass filter 11 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 means for outputting the received signal level as multi-value information, and the latter functions as means for outputting the duration of the received signal as multi-value information.
レベル検出回路１２及びタイミング検出回路１
３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
表現してある。 Level detection circuit 12 and timing detection circuit 1
The function of No. 3 will be explained with reference to FIG. In addition,
In FIG. 2, the received signal is expressed as a sine wave for simplicity.
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は、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 that the received signal is ±3, for example.
Detect which level you are at. In this embodiment, level 1 is detected. On the other hand, the timing detection circuit 13 detects which cycle of the signal duration of the received signal is, for example, among T1 to T5 . In this embodiment, T 4 is detected.
検出された情報は、第１図に示すように、帯域
フイルタ１１の出力をデコードした数字情報
DIGITに、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 numerical information obtained by decoding the output of the band filter 11, as shown in FIG.
DIGIT, level information LVL and timing information
It is attached as a TIM and passed to the switching controller.
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。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つている
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。 By collecting this type of information for each call, failure analysis of various lines and switching systems becomes possible. For example, by analyzing the level and timing when a code error occurs in the numerical information DIGIT, it is possible to take countermeasures to deal with the problem 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、ハードウエ
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 the hardware can be configured to be compact.
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 has a structure in which the multi-frequency signal receiving circuit is provided with 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
を示すブロツク図、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
……帯域フイルタ（FIL）、１２……レベル検出
回路（LVLDET）、１３……タイミング検出回路
（TIMDET）。
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
... Bandwidth filter (FIL), 12 ... Level detection circuit (LVLDET), 13 ... Timing detection circuit (TIMDET).
Claims (1)
ランクと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成ることを
特徴とする多周波信号受信方式。[Scope of Claims] 1. A multi-frequency signal receiving system comprising a multi-frequency signal receiving circuit that is connected to a destination trunk via a communication path when receiving a selection signal, the multi-frequency signal receiving circuit comprising: 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 JPS5915354A (en) | 1984-01-26 |
| JPH0119679B2 true 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) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2549086B2 (en) * | 1984-03-26 | 1996-10-30 | 株式会社日立製作所 | Exchange system |
-
1982
- 1982-07-16 JP JP12302782A patent/JPS5915354A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5915354A (en) | 1984-01-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5818929A (en) | Method and apparatus for DTMF detection | |
| CA1265275A (en) | Dial pulse detection | |
| US4626845A (en) | Subscriber validation system | |
| US4809272A (en) | Telephone switching system with voice detection and answer supervision | |
| WO1981002353A1 (en) | Digital pseudo continuous tone detector | |
| US5535271A (en) | Apparatus and method for dual tone multifrequency signal detection | |
| EP0576980B1 (en) | A method of improving sensitivity and speech immunity of a multifrequency receiver | |
| JPH0119679B2 (en) | ||
| US4922528A (en) | Circuitry for recognizing two-tone compound signals in telephone installations | |
| US4464756A (en) | System for error detection in frequency shift keyed signals | |
| SU690533A2 (en) | Device for monitoring telemechanics system with solving feedback | |
| JPH04157938A (en) | Communication error check method in communication system | |
| JPH03104355A (en) | Reception circuit for fs carrier transmission system | |
| JPH04336788A (en) | Dtmf signal receiver | |
| JP2927565B2 (en) | Multi-frequency signal receiver | |
| SU1309331A1 (en) | Multifrequency signal receiver | |
| SU1124455A1 (en) | Polyfrequency signal receiver | |
| JPH073722Y2 (en) | Tone signal transmission / detection device | |
| JPS61198845A (en) | Reception circuit | |
| SU376904A1 (en) | RECEIVER OF MULTI-FREQUENCY SIGNALS | |
| JPH03101546A (en) | Digital signal read system | |
| KR950002560Y1 (en) | Demodulator | |
| SU1049909A1 (en) | Priority device | |
| SU642856A1 (en) | Discrete communication channel monitor | |
| SU1614130A2 (en) | Device for receiving multiple-frequency signals |