JPH053574A - In-band ringer system with reception level monitor - Google Patents

In-band ringer system with reception level monitor

Info

Publication number
JPH053574A
JPH053574A JP15303491A JP15303491A JPH053574A JP H053574 A JPH053574 A JP H053574A JP 15303491 A JP15303491 A JP 15303491A JP 15303491 A JP15303491 A JP 15303491A JP H053574 A JPH053574 A JP H053574A
Authority
JP
Japan
Prior art keywords
reception
level
carrier signal
alarm
signal
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
Application number
JP15303491A
Other languages
Japanese (ja)
Inventor
Osamu Nakamura
修 中村
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by NEC Corp filed Critical NEC Corp
Priority to JP15303491A priority Critical patent/JPH053574A/en
Publication of JPH053574A publication Critical patent/JPH053574A/en
Pending legal-status Critical Current

Links

Landscapes

  • Monitoring And Testing Of Transmission In General (AREA)
  • Monitoring And Testing Of Exchanges (AREA)

Abstract

PURPOSE:To check the quality prior to connection and to issue deterioration alarm by adding a monitoring means for a reception carrier signal level. CONSTITUTION:A line connection part 1 which is an interface between lines LINE (R) and (S) sends a reception voice signal to a reception part 2 and an output part 4, and outputs it to reception signal lines 4WR and SR. A carrier signal level detecting part 3 detects the level value of a carrier signal received at the time of radio communication, and a level comparison part 6 compares it with the output value of a threshold value setting part 5 showing the threshold value of the reception level where its quality of speech is affected. When the reception level is out of the allowable range of the threshold value, an alarm output part 7 outputs an alarm signal to an alarm signal line ALM. On the other hand, the transmission signals from the transmission signal lines 4WS and SS and the carrier signal generated from a carrier signal generation part 10 are switched by a switching part 9, and transmitted from a transmission part 8 through a line connection part 1.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明はインバンドリンガ方式に
関し、特にアナログ回線のレベル変動に対する監視機能
をもつ受信レベル監視付インバンドリンガ方式に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an in-band ringer system, and more particularly to an in-band ringer system with a reception level monitor having a monitoring function for the level fluctuation of an analog line.

【０００２】[0002]

【従来の技術】従来インバンドリンガ方式では、ダイヤ
ルパルスを、音声帯域内の周波数をもつキャリア信号の
断続によって伝送し、接続された後にキャリア信号を停
止させて音声通信を行えるようにしている。回線監視の
機能は、有していない。2. Description of the Related Art In the conventional in-band ringer system, a dial pulse is transmitted by intermittently carrying a carrier signal having a frequency within a voice band, and after the connection, the carrier signal is stopped to enable voice communication. It does not have a line monitoring function.

【０００３】[0003]

【発明が解決しようとする課題】上述した従来のインバ
ンドリンガ方式は、回線監視を有していないので、接続
してから初めてアナログ回線のレベル変動の有無を確認
できるという欠点がある。The above-mentioned conventional in-band ringer system does not have line monitoring, and therefore has a drawback in that it is possible to confirm the presence or absence of level fluctuation of the analog line only after connecting.

【０００４】[0004]

【課題を解決するための手段】本発明の方式は、音声帯
域内の周波数をもつキャリア信号をダイヤルパルスに応
じて断続させて伝送するインバンドリンガ方式の受信側
に、前記キャリア信号の受信レベルが予め設定こた許容
範囲から外れたときに警報を発する受信レベル監視手段
を設けてある。According to the method of the present invention, the reception level of the carrier signal is transmitted to the receiving side of the in-band ringer method, which transmits and disconnects the carrier signal having a frequency within the voice band according to the dial pulse. Is provided with a reception level monitoring means for issuing an alarm when the value is out of a preset allowable range.

【０００５】[0005]

【実施例】次に本発明について図面を参照して説明す
る。The present invention will be described below with reference to the drawings.

【０００６】図１は本発明の一実施例のブロック図であ
る。回線ＬＩＮＥ（Ｒ）および（Ｓ）とのインタフェー
スである回線接続部１は、受信音声信号を受信部２及び
出力部４へ送り、受信信号線４ＷＲ及びＳＲへ出力させ
る。キャリア信号レベル検出部３は、無通話時に受信さ
れているキャリア信号のレベル値を検出し、これと、通
話品質に影響が出る受信レベルのしきい値を示すしきい
値設定部５の出力値とを、レベル比較部６で比較する。
しきい値の許容範囲から受信レベルが外れた場合には、
警報出力部４から警報信号線ＡＬＭに警報信号を出力さ
せる。FIG. 1 is a block diagram of an embodiment of the present invention. The line connection unit 1, which is an interface with the lines LINE (R) and (S), sends the received voice signal to the reception unit 2 and the output unit 4, and outputs it to the reception signal lines 4WR and SR. The carrier signal level detection unit 3 detects the level value of the carrier signal received during a non-call, and the output value of the threshold value setting unit 5 indicating the threshold value of the reception level that affects the call quality. And are compared by the level comparison unit 6.
If the reception level deviates from the threshold allowable range,
An alarm signal is output from the alarm output unit 4 to the alarm signal line ALM.

【０００７】一方、送信信号線４ＷＳ及びＳＳからの送
信信号と、キャリア信号発生部１０から発生するキャリ
ア信号とは、従来方式と同様に、切換部９で切換えら
れ、送信部８から回線接続部１を介して送信される。On the other hand, the transmission signals from the transmission signal lines 4WS and SS and the carrier signal generated from the carrier signal generation unit 10 are switched by the switching unit 9 in the same manner as in the conventional system, and the transmission unit 8 connects the line connection unit. Sent via 1.

【０００８】[0008]

【発明の効果】以上説明したように本発明によれば、受
信キャリア信号レベルの監視機能を付加することによ
り、接続する以前に回線の品質をチェックし、その劣化
の警報を発することができる。As described above, according to the present invention, by adding the function of monitoring the level of the received carrier signal, it is possible to check the quality of the line before connecting and issue an alarm of its deterioration.

【図面の簡単な説明】[Brief description of drawings]

【図１】本発明の実施例のブロック図。FIG. 1 is a block diagram of an embodiment of the present invention.

【符号の説明】[Explanation of symbols]

１ 回線接続部 ２ 受信部 ３ キャリア信号レベル検出部 ４ 出力部 ５ しきい値設定部 ６ レベル比較部 ７ 警報出力部 ８ 送信部 ９ 切換部 １０ キャリア信号発生部 1 line connection unit 2 reception unit 3 carrier signal level detection unit 4 output unit 5 threshold setting unit 6 level comparison unit 7 alarm output unit 8 transmission unit 9 switching unit 10 carrier signal generation unit

Claims (1)

【特許請求の範囲】 【請求項１】 音声帯域内の周波数をもつキャリア信号
をダイヤルパルスに応じて断続させて伝送するインバン
ドリンガ方式の受信側に、前記キャリア信号の受信レベ
ルが予め設定こた許容範囲から外れたときに警報を発す
る受信レベル監視手段を設けてあることを特徴とする受
信レベル監視付インバンドリンガ方式。Claim: What is claimed is: 1. A receiving level of an in-band ringer system for intermittently transmitting a carrier signal having a frequency within a voice band according to a dial pulse and transmitting the carrier signal. An in-band ringer system with reception level monitoring, which is provided with a reception level monitoring means for issuing an alarm when it is out of the allowable range.
JP15303491A 1991-06-25 1991-06-25 In-band ringer system with reception level monitor Pending JPH053574A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15303491A JPH053574A (en) 1991-06-25 1991-06-25 In-band ringer system with reception level monitor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15303491A JPH053574A (en) 1991-06-25 1991-06-25 In-band ringer system with reception level monitor

Publications (1)

Publication Number Publication Date
JPH053574A true JPH053574A (en) 1993-01-08

Family

ID=15553528

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15303491A Pending JPH053574A (en) 1991-06-25 1991-06-25 In-band ringer system with reception level monitor

Country Status (1)

Country Link
JP (1) JPH053574A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102350030A (en) * 2011-07-27 2012-02-15 江苏中瑞电保智能装备有限公司 Composite nozzle
CN102406999A (en) * 2011-07-27 2012-04-11 江苏中瑞电保智能装备有限公司 Pipe network type divisional dry powder fire extinguishing system and method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102350030A (en) * 2011-07-27 2012-02-15 江苏中瑞电保智能装备有限公司 Composite nozzle
CN102406999A (en) * 2011-07-27 2012-04-11 江苏中瑞电保智能装备有限公司 Pipe network type divisional dry powder fire extinguishing system and method

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