JP3716253B2

JP3716253B2 - Communication restriction system, exchange node and communication restriction method

Info

Publication number: JP3716253B2
Application number: JP2002379482A
Authority: JP
Inventors: 典池沢; 雅彦田村
Original assignee: NEC Corp; NEC Communication Systems Ltd
Current assignee: NEC Corp; NEC Communication Systems Ltd
Priority date: 2002-12-27
Filing date: 2002-12-27
Publication date: 2005-11-16
Anticipated expiration: 2022-12-27
Also published as: JP2004214782A

Description

【０００１】
【発明の属する技術分野】
本発明は、着信側と回線の接続を確立するために発信側から送信される発呼信号を規制する通信規制システム、交換ノードおよび通信規制方法に関する。
【０００２】
【従来の技術】
従来、電話回線を利用して情報を送受信するための通信システムは、電話回線を利用するユーザ側に備えた電話機と、電話機同士を電話回線を介して通信可能に接続するための交換ノードとを有する構成である。
【０００３】
上記従来の通話システムで、ユーザが自分の電話機を操作して他の電話機に電話をかける場合について説明する。
【０００４】
ユーザが、発信側電話機の受話器を持ち上げてオフフック状態にした後、着信側電話機の電話番号をかけると、発信側電話機は発信側電話番号および着信側電話番号の情報を含む発呼信号を電話回線を介して交換ノードに送信する。交換ノードは、発信側電話機から発呼信号を受信すると、発呼信号に含まれる着信側電話番号を読み出して、着信側電話番号の示す電話機への通信経路にある交換ノードに発呼信号を送信する。複数の交換ノードを経由して、着信側電話機に接続された交換ノードが電話回線を介して発呼信号を受信すると、発呼信号に含まれる着信側電話番号の示す電話機に発呼信号を送信する。
【０００５】
着信側電話機は、交換ノードから発呼信号を受信すると、着信があったことを着信側ユーザに通知するために、呼出音を出力する。着信側ユーザが受話器を取ってオフフック状態にすると、発信側電話機および着信側電話機との回線が接続され、ユーザ同士の通話が可能となる。
【０００６】
なお、以下では、発信側電話番号を発番号と称し、着信側電話番号を着番号と称する。
【０００７】
上記通話システムにおいて、電話機が迷惑電話の着信ができなくなるように着信規制する方法として、ユーザが予め着信を拒否したい発番号を交換ノードに登録するものがあった（例えば、特許文献１参照）。このようにして、ユーザは迷惑電話の着信を拒否できる。
【０００８】
一方、交換ノードを管理する事業者側は、輻輳による通信障害を回避するために、交換ノードに次のような輻輳制御を設定している。一部の交換ノードに発呼信号が集中した場合、交換ノードは、トラヒック量が処理能力の限界に達すると全ての発呼信号を転送処理できなくなるため、受信する発呼信号が交換ノードの処理能力限度の所定の割合に達したときに、緊急用発呼信号の転送処理を確保しながらトラヒック量に対応して発呼信号の転送処理を一律規制する輻輳制御を行う。また、チケット販売などで特定の着番号に対して発呼信号が殺到する場合、交換ノードは、特定の着番号を含む発呼信号についての転送処理を規制する。このように輻輳制御することで、一般ユーザの利用を確保している。
【０００９】
【特許文献１】
特開平３−２４４２５７号公報
【００１０】
【発明が解決しようとする課題】
近年、着信側電話機が発呼信号を受信した後、回線接続前に発信側電話機が回線を遮断した場合の通信である不完了呼により、着信側電話機に発番号を記録させる「ワン切り」が社会問題となっている。この「ワン切り」では、毎分何百という発呼信号を送信するもので、短い時間に多量に発信される発呼信号である異常発呼信号により電話回線網を輻輳させ、そのまま放置すると通信障害を起こすおそれがある。
【００１１】
また、この異常発呼信号は着信先が一定ではないため、上述のチケット販売の場合のように着信先指定による規制はできない。さらに、この異常発呼信号のために一律に通信規制する輻輳制御を行うと、一般の発呼信号まで規制対象となり、ユーザへのサービス低下を招くこととなる。
【００１２】
本発明は上記したような従来の技術が有する問題点を解決するためになされたものであり、一般の発呼信号の送信を阻害することなく、輻輳を引き起こす発呼信号の送信を規制する通信規制システム、交換ノードおよび通信規制方法を提供することを目的とする。
【００１３】
【課題を解決するための手段】
上記目的を達成するための本発明の通信規制システムは、発信側電話番号である発番号および着信側電話番号である着番号の情報を含む発呼信号を送出し、前記発番号で特定される発信側情報端末、および前記着番号で特定される着信側情報端末と、電話回線を介して通信可能に接続された交換ノードを有する通信規制システムであって、
前記着信側情報端末との回線接続前に前記発信側情報端末が遮断した発呼信号に含まれる発番号である不完了呼発番号に対応して該不完了呼発番号の受信時刻および受信回数を格納し、該不完了呼発番号の受信時刻と格納された受信時刻との差の時間が予め設定された規定時間内で、かつ前記受信回数が予め設定された規定回数を越える場合、該不完了呼発番号を通信規制対象となる発番号である規制発番号として前記交換ノードに送信する規制制御装置を備え、
前記交換ノードは、
前記規制制御装置から送信される前記規制発番号を格納し、受信した発呼信号に含まれる発番号に一致する規制発番号がある場合は、該発呼信号を送信せずに前記電話回線を遮断し、該発呼信号に含まれる不完了呼発番号を前記規制制御装置に送信する構成である。
【００１４】
また、本発明の通信規制システムは、発信側電話番号である発番号および着信側電話番号である着番号の情報を含む発呼信号を送出し、前記発番号で特定される発信側情報端末、および前記着番号で特定される着信側情報端末と、電話回線を介して通信可能に接続された交換ノードを有する通信規制システムであって、前記交換ノードから受信する、前記発呼信号に含まれる発番号、前記着信側情報端末の該発呼信号受信時刻および回線遮断時刻を含む利用情報のうち、前記発呼信号を受信した着信側情報端末との回線接続前に前記発信側情報端末が遮断した通信である不完了呼について、該発呼信号に含まれる発番号である不完了呼発番号、前記回線遮断時刻および不完了呼発生回数を含む不完了呼情報を予め設定された蓄積時間毎に格納し、格納した不完了呼情報を前記蓄積時間経過毎に前記交換ノードに送信する利用情報処理装置を備え、
前記交換ノードは、
前記発呼信号の前記利用情報を前記利用情報処理装置に送信し、前記利用情報処理装置から受信した前記不完了呼情報に含まれる前記回線遮断時刻間の時間が予め設定された規定時間内で、かつ前記不完了呼発生回数が予め設定された規定回数を越える場合、該不完了呼情報に含まれる不完了呼発番号を通信規制対象となる発番号である規制発番号として格納し、受信した発呼信号に含まれる発番号に一致する規制発番号があるとき、該発呼信号を送信せずに前記電話回線を遮断する構成である。
【００１５】
また、上記本発明の通信規制システムにおいて、前記交換ノードは、
前記発番号として前記規制発番号を含む発呼信号を予め設定された待機時間保持し、前記発信側情報端末から回線切断を要求する旨の回線切断要求信号を前記待機時間に受信した場合、該発呼信号を送信せずに削除し、該待機時間に前記回線切断要求信号を受信しなかった場合、該発呼信号を前記着信側情報端末に送信することとしてもよい。
【００１６】
一方、上記目的を達成するための本発明の交換ノードは、発信側電話番号である発番号および着信側電話番号である着番号の情報を含む発呼信号を送出し、前記発番号で特定される発信側情報端末、および前記着番号で特定される着信側情報端末と、電話回線を介して通信可能に接続された交換ノードであって、
通信規制対象となる発番号である規制発番号、ならびに前記着信側情報端末との回線接続前に前記発信側情報端末が遮断した発呼信号に含まれる発番号である不完了呼発番号に対応して該発呼信号の受信時刻および受信回数を格納するためのノード記憶部と、
受信した発呼信号に含まれる不完了呼発番号に対応して前記受信時刻および前記受信回数を前記ノード記憶部に格納し、該発呼信号の受信時刻と格納された受信時刻との差の時間が予め設定された規定時間内で、かつ前記受信回数が予め設定された規定回数を越える場合、該不完了呼発番号を前記規制発番号として前記ノード記憶部に格納し、受信した発呼信号に含まれる発番号に一致する規制発番号が前記ノード記憶部にあるとき、該発呼信号を送信せずに前記電話回線を遮断するノード制御部と、
を有する構成である。
【００１７】
また、上記本発明の交換ノードにおいて、前記ノード制御部は、
前記発番号として前記規制発番号を含む発呼信号を予め設定された待機時間前記ノード記憶部に保持し、前記発信側情報端末から回線切断を要求する旨の回線切断要求信号を前記待機時間に受信した場合、該発呼信号を送信せずに前記ノード記憶部から削除し、該待機時間に前記回線切断要求信号を受信しなかった場合、該発呼信号を前記着信側情報端末に送信することとしてもよい。
【００１８】
また、上記目的を達成するための本発明の通信規制方法は、発信側電話番号である発番号および着信側電話番号である着番号の情報を含む発呼信号を送出し、前記発番号で特定される発信側情報端末、および前記着番号で特定される着信側情報端末と、電話回線を介して通信可能に接続された交換ノードによる通信規制方法であって、
前記交換ノードから受信する、前記着信側情報端末との回線接続前に前記発信側情報端末が遮断した発呼信号に含まれる発番号である不完了呼発番号に対応して該不完了呼発番号の受信時刻および受信回数を格納し、
前記不完了呼発番号の受信時刻と格納された受信時刻との差の時間を求め、
求めた時間と予め設定された規定時間とを比較し、
求めた時間が前記規定時間内であれば、前記受信回数と予め設定された規定回数とを比較し、
前記通知回数が前記規定回数を越える場合、前記不完了呼発番号を、通信規制対象となる発呼信号の発番号である規制発番号として前記交換ノードに格納し、前記発呼信号を受信すると、前記交換ノードに該発呼信号に含まれる発番号と一致する規制発番号があるか否かを調べ、該発番号に一致する規制発番号があると、該発呼信号を送信せずに前記電話回線を遮断するものである。
【００１９】
また、本発明の通信規制方法は、発信側電話番号である発番号および着信側電話番号である着番号の情報を含む発呼信号を送出し、前記発番号で特定される発信側情報端末、および前記着番号で特定される着信側情報端末と、電話回線を介して通信可能に接続された交換ノードによる通信規制方法であって、
前記交換ノードから受信する、前記発呼信号に含まれる発番号、前記着信側情報端末の該発呼信号受信時刻および回線遮断時刻を含む利用情報のうち、前記発呼信号を受信した着信側情報端末との回線接続前に前記発信側情報端末が遮断した通信である不完了呼について、該発呼信号に含まれる発番号である不完了呼発番号、前記回線遮断時刻および不完了呼発生回数を含む不完了呼情報を前記交換ノードに送信する利用情報処理装置を備え、
前記交換ノードから前記利用情報を受信すると、前記不完了呼情報を予め設定された蓄積時間毎に前記利用情報処理装置に格納し、
格納した不完了呼情報を前記蓄積時間経過毎に前記利用情報処理装置から前記交換ノードに送信し、
前記利用情報処理装置から前記不完了呼情報を受信し、該不完了呼情報に含まれる前記回線遮断時刻間の時間が予め設定された規定時間内で、かつ前記不完了呼発生回数が予め設定された規定回数を越える場合、該不完了呼情報に含まれる不完了呼発番号を通信規制対象となる発呼信号の発番号である規制発番号として前記交換ノードに格納し、
前記発呼信号を受信すると、該発呼信号に含まれる発番号と一致する規制発番号が前記交換ノードにあるか否かを調べ、該発番号に一致する規制発番号があると、該発呼信号を送信せずに前記電話回線を遮断するものである。
【００２０】
さらに、上記本発明の通信規制方法において、前記発番号として前記規制発番号を含む発呼信号を受信すると、該発呼信号を予め設定された待機時間前記交換ノードに保持し、
前記発信側情報端末から回線切断を要求する旨の回線切断要求信号を前記待機時間に受信した場合、該発呼信号を送信せずに前記交換ノードから削除し、該待機時間に前記回線切断要求信号を受信しなかった場合、該発呼信号を前記着信側情報端末に送信することとしてもよい。
【００２１】
（作用）
本発明では、規定時間内に規定回数を越える発呼信号を送信する側の発番号が特定され、その発番号が通信規制の対象となる規制番号として交換ノードに登録されるため、交換ノードは、受信する発呼信号に含まれる発番号を読み出して規制番号であるか否かを調べ、発番号に一致する規制番号があると、その発呼信号を送信せずに回線を遮断する。そのため、短い時間に多量に発信される発呼信号である異常発呼信号が他の発呼信号を阻害することを防ぎ、輻輳を引き起こす発呼信号を規制できる。
【００２２】
また、本発明では、交換ノードは、不完了呼情報をモニタしなくても、利用情報処理装置より不完了呼情報を受信する。そのため、受信した不完了呼情報から規制番号を特定して格納し、発番号として規制番号を含む発呼信号を受信すると、その発呼信号を異常発呼信号と判断して送信せずに回線を遮断し、輻輳を防止できる。
【００２３】
さらに、本発明では、交換ノードは、発番号として規制番号を含む発呼信号を受信すると、発呼信号を待機時間保持し、待機時間に回線切断要求がなければ、その発呼信号を着信側情報端末に送信する。そのため、規制番号テーブルに誤って登録された発番号を含む発呼信号であっても、待機時間に発信元で回線を切らなければ、発呼信号が着信先の情報端末へ送信される。
【００２４】
【発明の実施の形態】
本発明の通信規制システムは、規定時間内に規定回数を越える不完了呼を起こす発呼信号の発番号を特定する規制制御装置を設け、交換ノードが、特定された発番号を含む発呼信号について回線を遮断するものである。
【００２５】
（第１実施例）
本発明の通信規制システムについて説明する。なお、以下では、発呼信号を規制する部分の構成および動作について説明し、交換ノードが備える、一般的な交換機としての機能の構成と動作については、その詳細な説明を省略する。
【００２６】
図１（ａ）は本発明の通信規制システムの一構成例を示すブロック図である。
【００２７】
本発明の通信規制システムは、通信規制対象となる発番号である規制発番号を格納し、規制発番号を含む発呼信号を規制する交換ノード２０ａおよび２０ｂと、規制番号を交換ノード２０ａおよび２０ｂに通知する規制制御装置１０とを有する構成である。規制制御装置１０は、交換ノード２０ａおよび２０ｂと信号線５０を介して接続されている。
【００２８】
交換ノード２０ａの下位にグループ交換ノード３０ａおよび３０ｂが電話回線４０を介して接続され、交換ノード２０ｂの下位にグループ交換ノード３０ｃおよび３０ｄが電話回線４０を介して接続されている。グループ交換ノード３０ａ〜３０ｄの下位には、ユーザ側に備えた情報端末として電話機（不図示）が電話回線を介して接続されている。
【００２９】
なお、以下では、交換ノード２０ａおよび２０ｂは同様の構成であるため、交換ノード２０ａについて説明する。また、グループ交換ノード３０ａ〜３０ｄは同様の構成であるため、交換ノードおよびグループ交換ノードにおける情報の送受信については、交換ノード２０ａおよびグループ交換ノード３０ａの場合で説明する。
【００３０】
事業者が、規制制御装置１０、交換ノード２０ａおよび２０ｂ、グループ交換ノード３０ａ〜３０ｄ、ならびに各装置を接続する電話回線４０および信号線５０を含む交換網６０を管理し、このような交換網６０が電話回線４０を介して複数接続されている。
【００３１】
次に、各構成について詳細に説明する。
【００３２】
図１（ｂ）は規制制御装置および交換ノードの一構成例を示すブロック図である。
【００３３】
交換ノード２０ａは、規制発番号を登録するための規制番号テーブルを保存するノード記憶部２２ａと、発呼信号に含まれる発番号を検索条件にして規制番号テーブルを調べるノード制御部２４ａとを有する構成である。
【００３４】
ノード制御部２４ａは、下位のグループ交換ノード３０ａから受信した発呼信号が不完了呼の場合、発呼信号から発番号を読み出し、読み出した発番号を不完了呼発番号として規制制御装置１０に送信する。規制制御装置１０から規制番号を受信すると、規制番号をノード記憶部２２ａの規制番号テーブルに格納する。
【００３５】
また、下位のグループ交換ノード３０ａから発呼信号を電話回線４０を介して受信すると、発呼信号に含まれる発番号を検索条件にして規制番号テーブルを調べ、一致する発番号があると、その発呼信号を送信することなく回線を遮断する。また、その発番号を不完了呼発番号として規制制御装置１０に送信する。
【００３６】
規制制御装置１０は、不完了呼発番号についての情報を登録するための登録テーブルを保存する発番号記憶部１２と、不完了呼発番号から規制発番号を決定する規制番号制御部１４と、ディスプレイおよびプリンタ等の出力部１６と、保守者が指示を入力するための入力部１８とを有する構成である。
【００３７】
規制番号制御部１４は、交換ノード２０ａから不完了呼発番号を受信すると、受信した不完了呼発番号が登録されているか否かを登録テーブルを調べ、登録されていない場合、不完了呼発番号の受信時刻、および受信回数を登録テーブルに格納する。なお、以下では、受信時刻を通知時刻と称し、受信回数を通知回数と称する。
【００３８】
また、受信した不完了呼発番号が登録されている場合、不完了呼発番号の通知時刻と格納された通知時刻との差の時間を求め、求めた時間が予め設定された規定時間内であるか否かを判定する。続いて、求めた時間が規定時間内であれば、通知回数が予め設定された規定回数を越えているか否かを判定し、規定回数を越えていれば、受信した不完了呼発番号を規制番号として交換ノード２０ａに送信する。
【００３９】
さらに、求めた時間が規定時間内であるか否かの判定の際、求めた時間が規定時間を越えていれば、受信した不完了呼発番号について、登録テーブルの通知回数をリセットし、通知時刻を登録する。また、通知回数が規定回数を越えているか否かの判定の際、通知回数が予め設定された規定回数内であれば、登録テーブルの通知回数を更新する。
【００４０】
なお、ノード制御部２４ａおよび規制番号制御部１４は、プログラムを格納するためのメモリ（不図示）と、プログラム制御により所定の処理を実行するＣＰＵ（不図示）とを備えている。規制番号制御部１４のメモリに格納されたプログラムに、規定時間、規定回数、規制解除時間、および登録解除時間が予め設定されている。
【００４１】
次に、上述した構成の通信規制システムの動作手順を説明する。
【００４２】
図２は、交換ノードが不完了呼発番号を規制制御装置へ通知する動作、および規制制御装置が規制番号を交換ノードに通知する動作を示すフローチャートである。
【００４３】
図に示すように、交換ノード２０ａは、グループ交換ノード３０ａから発呼信号を受信すると、受信した発呼信号の送信先に合わせた電話回線４０に発呼信号を転送し、転送した発呼信号による通信が不完了呼であった場合、発呼信号から発番号を読み出して不完了呼発番号として規制制御装置１０に送信する（ステップＳ２−１）。
【００４４】
続いて、ステップＳ２−２で、規制制御装置１０は、交換ノード２０ａから不完了呼発番号を受信すると、不完了呼発番号が通信規制の対象となる発番号であるか否かを、後述する方法で判定し、判定の結果、通信規制の対象である場合には、その発番号を規制発番号として交換ノード２０ａに送信する。交換ノード２０ａは、規制制御装置１０から規制発番号を受信すると、規制発番号をノード記憶部２２ａの規制番号テーブルに格納する。また、保守者に対して、規制を開始したことを示すメッセージをプリンタに印字出力したり、アラームを鳴らしたりして、規制を開始したことを通知する。
【００４５】
その後、図２のステップＳ２−３に示すように、交換ノード２０ａは、発呼信号を受信すると、発呼信号の発番号と規制番号テーブルに登録された規制発番号とを比較し、発番号と一致する規制発番号がある場合に、その発呼信号を送信先となる電話回線４０に送ることなく、規制発番号の発信側の電話回線４０を遮断する。
【００４６】
また、交換ノード２０ａは、その規制発番号を規制制御装置１０に不完了呼発番号として送信する。規制制御装置１０は、交換ノード２０ａから不完了呼発番号を受信すると、不完了呼発番号に対応する通知時刻および通知回数を更新する。
【００４７】
次に、規制制御装置１０が、交換ノード２０ａから受信した不完了呼発番号が通信規制の対象となる発番号であるか否かを判定する動作について説明する。
【００４８】
図３は規制制御装置の動作手順を示すフローチャートである。
【００４９】
ステップＳ３−１に示すように、規制制御装置１０は、交換ノード２０ａから不完了呼発番号を受信すると、受信した不完了呼発番号が登録テーブルに登録されているか否かを調べ（ステップＳ３−１１）、受信した不完了呼発番号に一致する番号が登録されていない場合、その不完了呼発番号とともに、通知時刻および通知回数を登録テーブルに格納する。
【００５０】
一方、ステップＳ３−１１で、受信した不完了呼発番号に一致する番号が登録テーブルに登録されている場合、受信した不完了呼発番号の通知時刻と、不完了呼発番号とともに格納された通知時刻との差の時間を求め、求めた時間が予め設定された規定時間を越えているか否かを調べる（ステップＳ３−１２）。求めた時間が規定時間を越えている場合、通信規制対象にならないものと判定して、通知回数をリセットし、新たな通知時刻を登録する。
【００５１】
ステップＳ３−１２で、求めた時間が規定時間内である場合には、通知回数および通知時刻を更新する。続いて、通知回数と予め設定された規定回数とを比較し（ステップＳ３−１３）、通知回数が規定回数を越えている場合、その不完了呼発番号を発番号とする発呼信号を通信規制の対象にするものと判定し、不完了呼発番号を規制発番号として交換ノード２０ａに送信する。交換ノード２０ａは規制制御装置１０から規制発番号を受信すると、この規制発番号を含む発呼信号を通信規制の対象にするために、規制発番号を規制番号テーブルに格納する。なお、ステップＳ３−１３で、通知回数が規定回数以下であれば、通信規制の対象とするか否かを引き続き判定するために、通知回数を更新する。
【００５２】
次に、規制制御装置１０が交換ノード２０ａに通信規制を解除させる動作について説明する。
【００５３】
図３のステップＳ３−２に示すように、規制制御装置１０は、登録テーブルに格納した不完了呼発番号のうち通知時刻から予め設定された規制解除時間を越える番号があると、通信規制を解除するために、通信規制の解除対象の発番号である解除発番号として交換ノード２０ａに送信する。交換ノード２０ａは、規制制御装置１０から解除発番号を受け取ると、解除発番号に一致する規制発番号を規制番号テーブル内を捜して規制番号テーブルから削除する。
【００５４】
このようにして、通信規制する必要のない発番号を規制番号テーブルから削除することで、交換ノード２０ａは、発呼信号から読み出した発番号について規制番号テーブルで検索する際、検索のための負荷が軽減される。
【００５５】
一方、規制制御装置１０は、登録テーブルに格納した不完了呼発番号のうち通知時刻から予め設定された登録解除時間を越える番号があると、通信規制すべきか否かの判定対象から除くために、その不完了呼発番号、ならびに不完了呼発番号に対応して格納された通知時刻および通知回数を登録テーブルから削除する。このように、登録解除時間を越える番号を判定対象から除くことで、規制番号制御部１４は、不完了呼発番号を検索する際、検索のための負荷が軽減される。
【００５６】
なお、規定時間、規定回数、規制解除時間、および登録解除時間は、上述のように予めプログラムに設定されていてもよく、保守者が規制制御装置１０の入力部１８を操作することで設定され、発番号記憶部１２に保存されるようにしてもよい。
【００５７】
また、保守者が規制制御装置１０の入力部１８を操作することで、交換ノード２０ａのノード記憶部２２ａに格納された規制番号を規制対象から解除できるようにしてもよい。また、保守者による規制解除の入力がなければ、規制制御装置１０はノード記憶部２２ａに格納された規制発番号を規制対象から解除できないようにしてもよい。この場合、交換ノード２０ａは、規制発番号を不完了呼発番号とする発呼信号を受信した際、不完了呼発番号を規制制御装置１０に通知しなくてもよい。この通知を省略することで、規制制御装置１０および交換ノード２０ａにおける情報の送受信回数を減らすことができる。
【００５８】
また、規制対象となる発呼信号の発信元につながる電話回線が予め特定できる場合、保守者が規制制御装置１０の入力部１８を操作して、特定した電話回線を交換ノード２０ａに指定することで、交換ノード２０ａは指定された回線からの発呼信号を規制制御装置１０への通知対象とする。この場合、交換ノード２０ａは、指定されなかった回線の不完了呼を監視する必要がないので、不完了呼を監視するための負担が軽減される。
【００５９】
また、ユーザ側に備えた情報端末が携帯電話機であって、交換ノード３０ａ〜３０ｄが基地局に接続される構成であってもよい。
【００６０】
さらに、規制制御装置１０が、グループ交換ノード３０ａ〜３０ｄに接続される構成でもよく、グループ交換ノード３０ａ〜３０ｄの下位に交換ノードを設け、新たに設けられた交換ノードに接続される構成でもよい。
【００６１】
本発明では、上述のようにして、規制制御装置１０が規定時間内に規定回数を越える不完了呼を起こす発呼信号の発番号を特定し、交換ノード２０ａが、特定された発番号を含む発呼信号について回線を遮断する。そのため、短い時間に多量に発信される発呼信号である異常発呼信号が他の発呼信号を阻害することを防ぎ、輻輳を引き起こす発呼信号を規制できる。
【００６２】
また、ユーザが自分の情報端末に異常発呼信号の受信を拒否するための設定をしなくても、ユーザの情報端末が異常発呼信号を受信することを防げる。
【００６３】
さらに、規制制御装置１０が、複数の交換ノード２０ａおよび２０ｂから不完了呼についての情報を収集し、収集した情報から規制発番号を特定して、交換ノード２０ａおよび２０ｂに規制発番号の情報を通知しているため、複数の交換ノード２０ａおよび２０ｂが規制制御装置１０で特定された規制発番号の情報を共有できる。
【００６４】
なお、図４に示すように、規制制御装置１０および交換ノード２０ａの代わりに、交換ノード２０ａに規制制御装置１０の機能を備えた交換ノード２００ａを設けるようにしてもよい。また、交換ノード２００ａおよび２００ｂのように、複数備えてもよい。この場合、各交換ノード２００ａ、２００ｂは、上述のようにして、規制番号を格納し、発呼番号から発番号を読み出して、規制の対象になるか否かを判断し、規制番号に一致する発番号であれば、回線を遮断する。
【００６５】
（第２実施例）
本実施例は、発呼信号の受信時刻、および回線の遮断時刻等を含む利用情報を収集し、利用情報から不完了呼発番号を特定するものである。なお、上記第１実施例と同様な構成については同一の符号を付し、その詳細な説明を省略する。
【００６６】
図５は本実施例の通信規制システムの一構成例を示すブロック図である。
【００６７】
図に示すように、本実施例の通信規制システムは、規制制御装置１０および交換ノード２０ａを備える他、交換ノード２０ａから利用情報を信号線５２を介して収集し、利用情報から読み出した不完了呼発番号を信号線５４を介して規制制御装置１０に送信するワークステーションおよびサーバ等の利用情報処理装置７０を有する構成である。以下に、各構成の動作について説明する。
【００６８】
交換ノード２０ａは、受信する発呼信号に含まれる発番号および着番号、ならびに発呼信号に対応して、着信側電話機が発呼信号を受信した時刻および発呼信号受信後の回線遮断時刻を含む利用情報を利用情報処理装置７０に送信する。なお、回線遮断時刻には、不完了呼の場合による遮断時刻と、着信側電話機が発呼信号を受信した後回線が接続された通信である完了呼の場合の遮断時刻とがある。
【００６９】
利用情報処理装置７０は、予め設定された蓄積時間毎に、交換ノード２０ａから受信する利用情報のうち、発呼信号が不完了呼の場合について、不完了呼発番号、ならびに不完了呼発番号に対応して、前記回線遮断時刻、および不完了呼発生回数を含む不完了呼情報を格納し、不完了呼情報を蓄積時間経過毎に規制制御装置１００に送信する。規制制御装置１０は、利用情報処理装置７０から不完了呼情報を受信すると、不完了呼情報から回線遮断時刻および不完了呼発生回数を読み出して、第１実施例と同様に、回線遮断時刻間の時間が規定時間を越えるか否かを判定し、その時間が規定時間内である場合には、不完了呼発生回数が規定回数を越えるか否かを判定する。
【００７０】
また、利用情報処理装置７０は、交換ノード２０ａから受信した利用情報のうち、発呼信号が完了呼の場合、発呼信号に含まれる発番号に対応して、発呼信号受信時刻から回線遮断時刻までの利用時間を求め、利用時間に応じた料金を算出して格納する。
【００７１】
なお、蓄積時間は、予めプログラムに設定されていてもよく、保守者が利用情報処理装置７０を操作することで設定されるようにしてもよい。
【００７２】
本実施例では、規制制御装置１０は利用情報処理装置７０から受信する不完了呼情報から規制発番号を特定するため、交換ノード２０ａは、下位のグループ交換ノード３０ａから受信する発呼信号を監視しなくてもよく、不完了呼を監視するための負担が軽減される。
【００７３】
なお、本実施例においても、上記第１実施例と同様に、交換ノード２０ａが規制制御装置１０の機能を備えるようにしてもよい。
【００７４】
（第３実施例）
本実施例は、交換ノードが発呼信号を受信してから送信するまで、発呼信号を保持するための待機時間を設け、待機時間に不完了呼が発生しなければ、受信した発呼信号を送信するものである。
【００７５】
なお、本実施例の通信規制システムは、上記第１実施例および第２実施例のいずれかの場合について、交換ノード２０ａに発呼信号を保持する動作を追加したものであるため、以下では、上記第１実施例および第２実施例と同様な構成および動作についての詳細な説明を省略する。
【００７６】
はじめに、待機時間の設定方法について説明する。
【００７７】
保守者が規制制御装置１０の入力部１８を操作して規制制御装置１０に待機時間を入力すると、規制番号制御部１４は、入力された待機時間を交換ノードに送信する。交換ノード２０ａは、規制制御装置１０から待機時間を受信すると、ノード記憶部２２ａに待機時間の情報を格納する。このようにして、保守者が決めたタイミングで発呼信号が送信されるように待機時間が設定される。
【００７８】
次に、交換ノード２０ａが発呼信号を保持する動作について説明する。
【００７９】
図６は、本実施例の動作を示すフローチャートである。
【００８０】
ステップＳ６−１に示すように、交換ノード２０ａは、グループ交換ノード３０ａから発呼信号を受信すると、受信した発呼信号に含まれる発番号が規制番号テーブルに登録されているか否かを調べる。調べた結果、その発番号に一致する規制番号が登録されていると、発呼信号をノード記憶部２２ａに上記待機時間保持する。待機時間に発信側から回線切断を要求する旨の回線切断要求信号を受信すると、交換ノード２０ａは、発呼信号を送信せずに、保持した発呼信号をノード記憶部２２ａから削除する。
【００８１】
一方、交換ノード２０ａは、グループ交換ノード３０ａから発呼信号を受信すると、ステップＳ６−１と同様に、受信した発呼信号に含まれる発番号が規制番号テーブルに登録されているか否かを調べ、その発番号に一致する規制番号が登録されていると、発呼信号をノード記憶部２２ａに上記待機時間保持する。続いて、ステップＳ６−２に示すように、待機時間に回線切断要求信号を受信しなければ、交換ノード２０ａは、不完了呼ではないと判断し、着信先に接続された回線に発呼信号を送信する。
【００８２】
本実施例では、上述のようにして、不完了呼を起こす発呼信号を規制するだけでなく、規制番号テーブルに誤って登録された発番号であっても、発信元で待機時間内に回線を切らなければ、発呼信号が着信先の情報端末へ送信される。
【００８３】
なお、本実施例では、待機時間は、上述のようにして保守者により設定されてもよいが、予めノード制御部２４ａのメモリ（不図示）に格納されたプログラムに設定されていてもよい。
【００８４】
また、保守者が規制制御装置１０を操作して待機時間を交換ノード２０ａに入力してもよいが、交換ノード２０ａが待機時間を入力するための入力部を備えるようにしてもよい。
【００８５】
【発明の効果】
本発明は以上説明したように構成されているので、以下に記載する効果を奏する。
【００８６】
本発明では、交換ノードが異常発呼信号を発信する側の電話番号を特定して通信規制を実施することで、一般ユーザからの発呼信号に影響を与えることなく、異常発呼信号が一部の回線に集中することで引き起こされる輻輳を回避できる。
【００８７】
また、交換ノードは、発呼信号を受け付けると、その発呼信号が規制対象であるかどうかを判断し、規制対象である場合には回線を遮断するため、社会問題となっている「ワン切り」の発呼信号をユーザの電話機に着信させることがない。
【００８８】
さらに、保守者が、異常発呼信号の発信元を特定して、その発信元につながる電話回線を遮断する操作をしなくても、異常発呼信号の発生を検出して通信規制するため、交換網の輻輳を早い段階で防ぐことができる。
【図面の簡単な説明】
【図１】本発明の通信規制システムの一構成例を示すブロック図である。
【図２】本発明の通信規制システムの動作手順を示すフローチャートである。
【図３】本発明の通信規制システムの動作手順を示すフローチャートである。
【図４】第１実施例の通信規制システムの他の構成を示すブロック図である。
【図５】第２実施例の通信規制システムの一構成例を示すブロック図である。
【図６】第３実施例の通信規制システムの動作手順を示すフローチャートである。
【符号の説明】
１０規制制御装置
１２発番号記憶部
１４規制番号制御部
１６出力部
１８入力部
２０ａ、２０ｂ交換ノード
２２ａノード記憶部
２４ａノード制御部
３０ａ〜３０ｄグループ交換ノード
４０電話回線
５０、５２、５４信号線
６０交換網
７０利用情報処理装置[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a communication restriction system, an exchange node, and a communication restriction method for restricting a call signal transmitted from a caller side in order to establish a line connection with a callee side.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a communication system for transmitting and receiving information using a telephone line includes a telephone provided on the user side using the telephone line, and an exchange node for connecting the telephones so that they can communicate with each other via the telephone line. It is the composition which has.
[0003]
A case will be described in which the user makes a call to another telephone by operating his / her telephone in the conventional telephone system.
[0004]
When the user lifts the handset of the calling telephone and goes off-hook, and then places the telephone number of the called telephone, the calling telephone sends a calling signal including information on the calling telephone number and the called telephone number to the telephone line. To the switching node. When the switching node receives the calling signal from the calling side telephone, the switching node reads the called telephone number included in the calling signal and transmits the calling signal to the switching node in the communication path to the telephone indicated by the called telephone number. To do. When the switching node connected to the called telephone is received via the telephone line via the plurality of switching nodes, the calling signal is transmitted to the telephone indicated by the called telephone number included in the calling signal. To do.
[0005]
Upon receiving the call signal from the exchange node, the receiving side telephone outputs a ringing tone to notify the receiving side user that there has been an incoming call. When the called-side user picks up the handset and puts it in the off-hook state, the line between the calling-side telephone and the called-side telephone is connected, and the users can talk with each other.
[0006]
In the following, the caller telephone number is referred to as a calling number, and the callee telephone number is referred to as a called number.
[0007]
In the above call system, as a method of restricting incoming calls so that the telephone cannot receive a nuisance call, there is a method in which a calling number that a user desires to reject is registered in an exchange node in advance (see, for example, Patent Document 1). In this way, the user can refuse incoming incoming calls.
[0008]
On the other hand, the provider side managing the switching node sets the following congestion control in the switching node in order to avoid communication failure due to congestion. When calling signals are concentrated on some switching nodes, the switching nodes cannot process all of the calling signals when the traffic volume reaches the limit of the processing capacity. Therefore, the received calling signals are processed by the switching nodes. When a predetermined ratio of the capacity limit is reached, congestion control is performed to uniformly restrict the call signal transfer process in accordance with the traffic volume while ensuring the emergency call signal transfer process. Further, when a call signal is flooded to a specific called number in ticket sales or the like, the exchange node restricts the transfer process for the calling signal including the specific called number. Congestion control in this way ensures the use of general users.
[0009]
[Patent Document 1]
JP-A-3-244257
[0010]
[Problems to be solved by the invention]
In recent years, after receiving a call signal from the receiving telephone, before calling the line, the calling telephone can record the calling number by an incomplete call, which is a communication when the calling telephone disconnects the line. It has become a social problem. This “one-off” system sends hundreds of call signals per minute. If the telephone line network is congested by abnormal call signals that are sent in large quantities in a short period of time, communication will continue if left as it is. May cause damage.
[0011]
In addition, since the destination of the abnormal call signal is not constant, it is not possible to restrict the destination by specifying the destination as in the case of ticket sales described above. Further, if congestion control is performed to uniformly restrict communication for this abnormal call signal, even a general call signal is subject to restriction, which causes a reduction in service to the user.
[0012]
The present invention has been made to solve the above-described problems of the prior art, and communication that restricts transmission of a call signal that causes congestion without hindering transmission of a general call signal. An object is to provide a regulation system, an exchange node, and a communication regulation method.
[0013]
[Means for Solving the Problems]
In order to achieve the above object, the communication restriction system of the present invention sends a calling signal including information on a calling party number that is a calling party telephone number and a called party number that is a called party telephone number, and is specified by the calling party number. A communication regulation system having an exchange node connected to be communicable via a telephone line with a caller information terminal and a callee information terminal specified by the called number,
The reception time and number of receptions of the incomplete call origination number corresponding to the incomplete call origination number which is the origination number included in the call origination signal blocked by the origination side information terminal before the line connection with the callee information terminal And when the difference between the reception time of the incomplete call origination number and the stored reception time is within a preset specified time and the number of receptions exceeds a preset specified number of times, A regulation control device that transmits an incomplete call origination number to the exchange node as a regulation calling number that is a calling number subject to communication regulation;
The exchange node is
The restriction calling number transmitted from the restriction control device is stored, and when there is a restriction calling number that matches the calling number included in the received calling signal, the telephone line is not transmitted without transmitting the calling signal. The configuration is such that the incomplete call origination number included in the call origination signal is blocked and transmitted to the restriction control device.
[0014]
Further, the communication restriction system of the present invention sends a calling signal including information of a calling number that is a calling side telephone number and a called number that is a called side telephone number, and a calling side information terminal specified by the calling number, And a communication restriction system having an exchange node that is communicably connected via a telephone line with a called information terminal specified by the called number, and is included in the call signal received from the exchange node Of the usage information including the calling number, the calling signal reception time and the line disconnection time of the called information terminal, the calling information terminal is blocked before connecting the line with the called information terminal that has received the calling signal. For an incomplete call that is an established communication, incomplete call information including an incomplete call origination number, which is a call origination number included in the call signal, the line disconnection time, and the number of incomplete call occurrences is stored every preset accumulation time. Stored in Includes a usage information processing apparatus for transmitting a non-completed call information stored in the switching node at every elapse the storage time,
The exchange node is
The usage information of the call signal is transmitted to the usage information processing apparatus, and the time between the line cutoff times included in the incomplete call information received from the usage information processing apparatus is within a predetermined time set in advance. When the number of incomplete call occurrences exceeds a predetermined number of times set in advance, the incomplete call origination number included in the incomplete call information is stored as a restriction origination number that is a call origination target subject to communication regulation, and received When there is a restricted calling number that matches the calling number included in the calling signal, the telephone line is disconnected without transmitting the calling signal.
[0015]
In the communication restriction system of the present invention, the exchange node is
A call signal including the restriction call number as the calling number is held for a preset waiting time, and when a line disconnection request signal for requesting line disconnection is received from the calling side information terminal at the waiting time, If the call signal is deleted without being transmitted and the line disconnection request signal is not received during the waiting time, the call signal may be transmitted to the callee information terminal.
[0016]
On the other hand, the exchange node of the present invention for achieving the above object sends a calling signal including information on a calling party number that is a calling party telephone number and a called party number that is a called party telephone number, and is specified by the calling party number. An exchange node connected to be communicable via a telephone line with the caller information terminal and the callee information terminal specified by the called number,
Corresponds to the restricted calling number that is the calling number subject to communication restriction, and the incomplete call calling number that is the calling number included in the calling signal blocked by the calling information terminal before the line connection with the called information terminal A node storage unit for storing the reception time and the number of receptions of the call signal;
The reception time and the number of receptions are stored in the node storage unit corresponding to the incomplete call origination number included in the received call signal, and the difference between the reception time of the call signal and the stored reception time is stored. If the time is within a predetermined time set in advance and the number of receptions exceeds the predetermined number of times set, the incomplete call origination number is stored in the node storage unit as the restriction call origination number, and the received call is received A node control unit that shuts off the telephone line without transmitting the call signal when there is a restricted calling number in the node storage unit that matches the calling number included in the signal;
It is the structure which has.
[0017]
In the exchange node according to the present invention, the node control unit includes:
A call signal including the restriction call number as the calling number is held in the node storage unit for a preset standby time, and a line disconnection request signal for requesting line disconnection from the caller information terminal is set in the standby time. If it is received, the call signal is deleted from the node storage unit without being transmitted, and if the line disconnection request signal is not received during the waiting time, the call signal is transmitted to the callee information terminal It is good as well.
[0018]
In addition, the communication restriction method of the present invention for achieving the above object sends a calling signal including information on a calling party number that is a calling party telephone number and a called party number that is a called party telephone number, and is specified by the calling party number. A communication restriction method by an exchange node connected to be communicable via a telephone line with a callee information terminal to be performed and a callee information terminal specified by the called number,
The incomplete call origination corresponding to the incomplete call origination number, which is a call origination number included in the call origination signal received by the switching side node before the line connection with the destination information terminal is received. Stores the reception time and number of reception of the number,
Obtaining a time difference between the reception time of the incomplete call origination number and the stored reception time;
Compare the calculated time with a preset time,
If the obtained time is within the specified time, the number of receptions is compared with a preset specified number of times,
When the number of notifications exceeds the specified number of times, the incomplete call origination number is stored in the exchange node as a regulation call origination number that is a call origination number of a communication regulation target, and the call signal is received. The switching node checks whether there is a restricted calling number that matches the calling number included in the calling signal, and if there is a restricted calling number that matches the calling number, the call signal is not transmitted. The telephone line is cut off.
[0019]
Further, the communication restriction method of the present invention sends a calling signal including information on a calling number that is a calling side telephone number and a called number that is a called side telephone number, and a calling side information terminal identified by the calling number, And a communication restriction method by an exchange node connected to be able to communicate with a receiving side information terminal specified by the called number via a telephone line,
Of the usage information including the calling number included in the calling signal received from the switching node, the calling signal reception time and the line cutoff time of the called information terminal, the called side information that has received the calling signal For an incomplete call, which is a communication blocked by the originating information terminal before the line connection with the terminal, an incomplete call origination number that is a calling number included in the call signal, the line cutoff time, and the number of incomplete call occurrences A use information processing apparatus that transmits uncompleted call information including the information to the exchange node,
When the usage information is received from the exchange node, the incomplete call information is stored in the usage information processing apparatus for each preset accumulation time,
The stored incomplete call information is transmitted from the usage information processing apparatus to the exchange node every time the accumulation time elapses,
The incomplete call information is received from the use information processing apparatus, the time between the line disconnection times included in the incomplete call information is within a predetermined time set in advance, and the number of incomplete call occurrences is set in advance When the specified number of times is exceeded, the incomplete call origination number included in the incomplete call information is stored in the exchange node as a regulation origination number that is a call origination number of a call signal subject to communication regulation,
When the calling signal is received, it is checked whether or not there is a restricted calling number in the switching node that matches the calling number included in the calling signal. If there is a restricted calling number that matches the calling number, The telephone line is cut off without transmitting a call signal.
[0020]
Further, in the communication restriction method of the present invention, when a call signal including the restricted call number as the calling number is received, the call signal is held in the exchange node for a preset standby time,
If a line disconnection request signal for requesting line disconnection is received from the calling side information terminal during the standby time, the call disconnecting signal is deleted from the switching node without being transmitted, and the line disconnection request is transmitted during the standby time. When the signal is not received, the call signal may be transmitted to the called information terminal.
[0021]
(Function)
In the present invention, the calling number on the side that transmits the calling signal exceeding the specified number of times within the specified time is specified, and the calling number is registered in the switching node as a restriction number subject to communication restriction. Then, the calling number included in the received calling signal is read to check whether it is a restriction number. If there is a restriction number that matches the calling number, the line is cut off without transmitting the calling signal. Therefore, it is possible to prevent abnormal call signals, which are call signals sent in large quantities in a short time, from inhibiting other call signals, and to regulate call signals that cause congestion.
[0022]
In the present invention, the exchange node receives the incomplete call information from the use information processing apparatus without monitoring the incomplete call information. Therefore, when the restriction number is specified and stored from the received incomplete call information and a call signal including the restriction number is received as the calling number, the call signal is judged to be an abnormal call signal and is not transmitted. Can be blocked and congestion can be prevented.
[0023]
Further, in the present invention, when the switching node receives a calling signal including a restriction number as a calling number, the switching node holds the calling signal for a waiting time, and if there is no line disconnection request during the waiting time, the switching node receives the calling signal. Send to the information terminal. For this reason, even if a call signal includes a call number registered in the restriction number table, the call signal is transmitted to the destination information terminal if the call source is not disconnected during the standby time.
[0024]
DETAILED DESCRIPTION OF THE INVENTION
The communication restriction system of the present invention is provided with a restriction control device for specifying a calling number of a calling signal that causes an incomplete call exceeding a specified number of times within a specified time, and the switching node includes a calling signal including the specified calling number. The line is cut off.
[0025]
(First embodiment)
The communication restriction system of the present invention will be described. In the following, the configuration and operation of the part that regulates the call signal will be described, and detailed description of the configuration and operation of the function as a general exchange provided in the exchange node will be omitted.
[0026]
FIG. 1A is a block diagram showing a configuration example of a communication restriction system of the present invention.
[0027]
The communication restriction system of the present invention stores a restriction calling number that is a calling number subject to communication restriction, exchange nodes 20a and 20b for restricting call signals including the restriction calling number, and exchange numbers 20a and 20b for restriction numbers. It is the structure which has the control apparatus 10 which notifies to. The restriction control device 10 is connected to the exchange nodes 20 a and 20 b via the signal line 50.
[0028]
Group switching nodes 30a and 30b are connected to the lower level of switching node 20a via telephone line 40, and group switching nodes 30c and 30d are connected to lower level of switching node 20b via telephone line 40. Below the group exchange nodes 30a to 30d, telephones (not shown) are connected via telephone lines as information terminals provided on the user side.
[0029]
In the following description, since the exchange nodes 20a and 20b have the same configuration, the exchange node 20a will be described. Since group exchange nodes 30a to 30d have the same configuration, information transmission / reception in the exchange node and group exchange node will be described in the case of exchange node 20a and group exchange node 30a.
[0030]
A business operator manages the switching network 60 including the regulation control device 10, the switching nodes 20a and 20b, the group switching nodes 30a to 30d, and the telephone line 40 and the signal line 50 that connect the devices. Are connected via the telephone line 40.
[0031]
Next, each configuration will be described in detail.
[0032]
FIG. 1B is a block diagram illustrating a configuration example of the restriction control device and the exchange node.
[0033]
The exchange node 20a includes a node storage unit 22a that stores a restriction number table for registering the restriction calling number, and a node control part 24a that checks the restriction number table using the calling number included in the call signal as a search condition. It is a configuration.
[0034]
When the call signal received from the lower group switching node 30a is an incomplete call, the node control unit 24a reads the call number from the call signal, and sets the read call number as an incomplete call call number to the restriction control device 10. Send. When the restriction number is received from the restriction control device 10, the restriction number is stored in the restriction number table of the node storage unit 22a.
[0035]
Further, when a call signal is received from the lower group switching node 30a via the telephone line 40, the restriction number table is checked using the call number included in the call signal as a search condition, and if there is a matching call number, The line is disconnected without sending a call signal. Further, the calling number is transmitted to the restriction control device 10 as an incomplete call calling number.
[0036]
The restriction control device 10 includes a calling number storage unit 12 that stores a registration table for registering information about incomplete call origination numbers, a restriction number control unit 14 that determines a restriction calling number from incomplete call origination numbers, The configuration includes an output unit 16 such as a display and a printer, and an input unit 18 for a maintenance person to input an instruction.
[0037]
Upon receipt of the incomplete call origination number from the exchange node 20a, the restriction number control unit 14 checks the registration table to determine whether or not the received incomplete call origination number is registered. The reception time of the number and the number of receptions are stored in the registration table. Hereinafter, the reception time is referred to as notification time, and the reception count is referred to as notification count.
[0038]
In addition, when the received incomplete call number is registered, the difference time between the notification time of the incomplete call number and the stored notification time is obtained, and the obtained time is within a predetermined time set in advance. It is determined whether or not there is. Subsequently, if the calculated time is within the specified time, it is determined whether or not the number of notifications exceeds a preset specified number of times, and if it exceeds the specified number of times, the received incomplete call number is regulated. The number is transmitted to the exchange node 20a.
[0039]
Furthermore, when determining whether or not the calculated time is within the specified time, if the calculated time exceeds the specified time, the number of notifications in the registration table is reset for the received incomplete call number, and notification is made. Register the time. Further, when determining whether or not the number of notifications exceeds the specified number of times, if the number of notifications is within a predetermined number of times set in advance, the number of notifications in the registration table is updated.
[0040]
The node control unit 24a and the regulation number control unit 14 include a memory (not shown) for storing a program, and a CPU (not shown) that executes predetermined processing by program control. A prescribed time, a prescribed number of times, a restriction release time, and a registration release time are set in advance in the program stored in the memory of the restriction number control unit 14.
[0041]
Next, an operation procedure of the communication restriction system configured as described above will be described.
[0042]
FIG. 2 is a flowchart illustrating an operation in which the exchange node notifies the restriction control device of the incomplete call origination number and an operation in which the restriction control device notifies the exchange node of the restriction number.
[0043]
As shown in the figure, when the switching node 20a receives a call signal from the group switching node 30a, the switching node 20a transfers the call signal to the telephone line 40 that matches the destination of the received call signal, and transfers the transferred call signal. If the communication by is an incomplete call, the calling number is read from the calling signal and transmitted to the restriction control device 10 as an incomplete call calling number (step S2-1).
[0044]
Subsequently, in Step S2-2, when the restriction control device 10 receives the incomplete call origination number from the exchange node 20a, it will be described later whether or not the incomplete call origination number is a call origination target of communication restriction. If the result of the determination is that it is subject to communication regulation, the calling number is transmitted to the exchange node 20a as the regulated calling number. When receiving the restriction calling number from the restriction control device 10, the exchange node 20a stores the restriction calling number in the restriction number table of the node storage unit 22a. In addition, a message indicating that the regulation has started is printed out to the printer or an alarm is sounded to notify the maintenance person that the regulation has started.
[0045]
After that, as shown in step S2-3 of FIG. 2, when the exchange node 20a receives the calling signal, the switching node 20a compares the calling number of the calling signal with the restriction calling number registered in the restriction number table, and the calling number. If there is a restricted calling number, the call signal is not sent to the telephone line 40 as the transmission destination, but the telephone line 40 on the transmission side of the restricted calling number is blocked.
[0046]
Further, the exchange node 20a transmits the restriction calling number to the restriction control device 10 as an incomplete call calling number. When receiving the incomplete call origination number from the exchange node 20a, the restriction control device 10 updates the notification time and the number of notifications corresponding to the incomplete call origination number.
[0047]
Next, the operation in which the restriction control device 10 determines whether or not the incomplete call calling number received from the exchange node 20a is a calling number subject to communication restriction will be described.
[0048]
FIG. 3 is a flowchart showing an operation procedure of the restriction control device.
[0049]
As shown in step S3-1, when the restriction control device 10 receives the incomplete call origination number from the exchange node 20a, it checks whether or not the received incomplete call origination number is registered in the registration table (step S3). -11) When the number that matches the received incomplete call number is not registered, the notification time and the number of notifications are stored in the registration table together with the incomplete call number.
[0050]
On the other hand, if a number matching the received incomplete call origination number is registered in the registration table in step S3-11, it is stored together with the notification time of the received incomplete call origination number and the incomplete call origination number. The difference time from the notification time is obtained, and it is checked whether or not the obtained time exceeds a preset specified time (step S3-12). If the calculated time exceeds the specified time, it is determined that the communication is not subject to communication regulation, the number of notifications is reset, and a new notification time is registered.
[0051]
If the calculated time is within the specified time in step S3-12, the number of notifications and the notification time are updated. Subsequently, the number of notifications is compared with a preset number of times (step S3-13), and if the number of notifications exceeds the specified number of times, a call signal with the incomplete call number as the calling number is communicated. It is determined to be subject to restriction, and the incomplete call origination number is transmitted to the exchange node 20a as the restriction calling number. When the exchange node 20a receives the restriction calling number from the restriction control device 10, the exchange node 20a stores the restriction calling number in the restriction number table in order to make a call signal including the restriction calling number subject to communication restriction. In step S3-13, if the number of notifications is equal to or less than the specified number, the number of notifications is updated in order to continue to determine whether to be subject to communication regulation.
[0052]
Next, an operation in which the restriction control device 10 causes the exchange node 20a to release communication restriction will be described.
[0053]
As shown in step S3-2 of FIG. 3, the restriction control device 10 restricts communication when there is a number exceeding the restriction release time set in advance from the notification time among the incomplete call origination numbers stored in the registration table. In order to cancel, it is transmitted to the exchange node 20a as a cancellation calling number that is a calling number for which communication restriction is to be canceled. When the exchange node 20a receives the release call number from the restriction control device 10, the exchange node 20a searches the restriction number table for the restriction call number that matches the release call number and deletes it from the restriction number table.
[0054]
In this way, by deleting the calling party number that does not need to be restricted from the restriction number table, the exchange node 20a searches for the calling party number read from the call signal in the restriction number table. Is reduced.
[0055]
On the other hand, if there is a number that exceeds a preset deregistration time from the notification time among the incomplete call number stored in the registration table, the restriction control device 10 removes it from the determination target whether or not to restrict communication. The incomplete call origination number and the notification time and the number of notifications stored corresponding to the incomplete call origination number are deleted from the registration table. In this way, by removing the number exceeding the registration cancellation time from the determination target, the restriction number control unit 14 reduces the load for the search when searching for the incomplete call origination number.
[0056]
Note that the specified time, the specified number of times, the restriction release time, and the registration release time may be set in advance in the program as described above, and are set by the maintenance person operating the input unit 18 of the restriction control device 10. Alternatively, it may be stored in the calling number storage unit 12.
[0057]
In addition, the maintenance number may be released from the restriction target by operating the input unit 18 of the restriction control device 10 so that the restriction number stored in the node storage unit 22a of the exchange node 20a. Further, if there is no input for canceling the restriction by the maintenance person, the restriction control device 10 may not be able to release the restriction calling number stored in the node storage unit 22a from the restriction target. In this case, the exchange node 20a does not need to notify the restriction control device 10 of the incomplete call origination number when receiving a call signal having the restriction call origination number as an incomplete call origination number. By omitting this notification, the number of times of transmission / reception of information in the restriction control device 10 and the exchange node 20a can be reduced.
[0058]
When the telephone line connected to the source of the call signal to be regulated can be identified in advance, the maintenance person operates the input unit 18 of the regulation control device 10 to designate the identified telephone line as the exchange node 20a. Thus, the switching node 20a sets a call signal from the designated line as a notification target to the restriction control device 10. In this case, since the exchange node 20a does not need to monitor the incomplete call of the line that has not been designated, the burden for monitoring the incomplete call is reduced.
[0059]
The information terminal provided on the user side may be a mobile phone, and the exchange nodes 30a to 30d may be connected to the base station.
[0060]
Further, the restriction control device 10 may be configured to be connected to the group exchange nodes 30a to 30d, or may be configured to provide an exchange node below the group exchange nodes 30a to 30d and to be connected to a newly provided exchange node. .
[0061]
In the present invention, as described above, the restriction control device 10 identifies the calling number of the calling signal that causes the incomplete call exceeding the specified number of times within the specified time, and the exchange node 20a includes the specified calling number. Block the line for the call signal. Therefore, it is possible to prevent abnormal call signals, which are call signals sent in large quantities in a short time, from inhibiting other call signals, and to regulate call signals that cause congestion.
[0062]
Further, even if the user does not set his / her information terminal to reject the reception of the abnormal call signal, the user's information terminal can be prevented from receiving the abnormal call signal.
[0063]
Further, the restriction control device 10 collects information on incomplete calls from the plurality of switching nodes 20a and 20b, specifies the restriction calling number from the collected information, and sends the information on the restriction calling number to the switching nodes 20a and 20b. Since the notification is made, the plurality of exchange nodes 20a and 20b can share the information on the restriction calling number specified by the restriction control device 10.
[0064]
As shown in FIG. 4, instead of the restriction control device 10 and the exchange node 20a, the exchange node 20a may be provided with an exchange node 200a having the function of the restriction control device 10. A plurality of exchange nodes 200a and 200b may be provided. In this case, each switching node 200a, 200b stores the restriction number as described above, reads the calling number from the calling number, determines whether or not it is subject to restriction, and matches the restriction number. If the calling party number, block the line.
[0065]
(Second embodiment)
In the present embodiment, usage information including the reception time of a call signal and the disconnection time of a line is collected, and an incomplete call origination number is specified from the usage information. In addition, the same code | symbol is attached | subjected about the structure similar to the said 1st Example, and the detailed description is abbreviate | omitted.
[0066]
FIG. 5 is a block diagram illustrating a configuration example of the communication restriction system according to the present embodiment.
[0067]
As shown in the figure, the communication restriction system of the present embodiment includes the restriction control device 10 and the exchange node 20a, and also collects usage information from the exchange node 20a via the signal line 52 and reads it from the usage information. This is a configuration having a use information processing device 70 such as a workstation and a server that transmits a calling number to the restriction control device 10 via a signal line 54. Hereinafter, the operation of each component will be described.
[0068]
The switching node 20a determines the calling number and called number included in the received calling signal, and the time when the receiving telephone receives the calling signal and the line cutoff time after receiving the calling signal, in response to the calling signal. The included usage information is transmitted to the usage information processing apparatus 70. The line cut-off time includes a cut-off time in the case of an incomplete call and a cut-off time in the case of a completed call that is a communication to which a line is connected after the receiving telephone receives a call signal.
[0069]
The usage information processing apparatus 70 sets the incomplete call origination number and the incomplete call origination number in the case where the call signal is an incomplete call among the usage information received from the exchange node 20a at every preset accumulation time. In response, the incomplete call information including the line cutoff time and the number of incomplete call occurrences is stored, and the incomplete call information is transmitted to the restriction control device 100 every time the accumulation time elapses. When the restriction control device 10 receives the incomplete call information from the use information processing device 70, the restriction control device 10 reads the line cut-off time and the number of incomplete call occurrences from the incomplete call information. It is determined whether or not the specified time exceeds the specified time. If the time is within the specified time, it is determined whether or not the number of incomplete calls exceeds the specified number.
[0070]
In addition, when the call signal is a completed call among the use information received from the exchange node 20a, the use information processing device 70 blocks the line from the call signal reception time corresponding to the calling number included in the call signal. The usage time until the time is obtained, and a charge corresponding to the usage time is calculated and stored.
[0071]
The accumulation time may be set in advance in the program, or may be set by operating the use information processing apparatus 70 by a maintenance person.
[0072]
In this embodiment, since the restriction control device 10 identifies the restriction calling number from the incomplete call information received from the usage information processing device 70, the exchange node 20a monitors the call signal received from the lower group exchange node 30a. The burden of monitoring unfinished calls can be reduced.
[0073]
Also in this embodiment, the exchange node 20a may have the function of the restriction control device 10 as in the first embodiment.
[0074]
(Third embodiment)
In this embodiment, a waiting time for holding the calling signal is provided until the switching node receives the calling signal and transmits it. If no incomplete call occurs in the waiting time, the received calling signal is received. Is to send.
[0075]
In addition, since the communication control system of the present embodiment is one in which an operation for holding a call signal is added to the exchange node 20a in either case of the first embodiment or the second embodiment described above, Detailed description of the same configuration and operation as those of the first and second embodiments will be omitted.
[0076]
First, a method for setting the standby time will be described.
[0077]
When the maintenance person operates the input unit 18 of the restriction control device 10 and inputs the standby time to the restriction control device 10, the restriction number control unit 14 transmits the input standby time to the exchange node. When receiving the standby time from the restriction control device 10, the exchange node 20a stores the standby time information in the node storage unit 22a. In this way, the standby time is set so that the call signal is transmitted at the timing determined by the maintenance person.
[0078]
Next, an operation in which the exchange node 20a holds a call signal will be described.
[0079]
FIG. 6 is a flowchart showing the operation of the present embodiment.
[0080]
As shown in step S6-1, when the exchange node 20a receives a call signal from the group exchange node 30a, the exchange node 20a checks whether the call number included in the received call signal is registered in the restriction number table. As a result of the examination, if a restriction number that matches the calling number is registered, the calling signal is held in the node storage unit 22a for the waiting time. When receiving a line disconnection request signal for requesting line disconnection from the calling side during the standby time, the exchange node 20a deletes the held call signal from the node storage unit 22a without transmitting the call signal.
[0081]
On the other hand, when receiving the call signal from the group exchange node 30a, the exchange node 20a checks whether or not the call number included in the received call signal is registered in the restriction number table, as in step S6-1. If a restriction number that matches the calling number is registered, the call signal is held in the node storage unit 22a for the waiting time. Subsequently, as shown in step S6-2, if the line disconnection request signal is not received during the standby time, the exchange node 20a determines that the call is not an incomplete call, and makes a call signal to the line connected to the destination. Send.
[0082]
In this embodiment, as described above, not only the call signal that causes an incomplete call is restricted, but even if the call number is erroneously registered in the restriction number table, the caller can connect the line within the waiting time. If is not cut, a call signal is transmitted to the destination information terminal.
[0083]
In this embodiment, the waiting time may be set by the maintenance person as described above, but may be set in a program stored in advance in a memory (not shown) of the node control unit 24a.
[0084]
Further, the maintenance person may operate the restriction control device 10 to input the standby time to the exchange node 20a, but the exchange node 20a may include an input unit for inputting the standby time.
[0085]
【The invention's effect】
Since the present invention is configured as described above, the following effects can be obtained.
[0086]
In the present invention, by specifying the telephone number of the side from which the switching node sends an abnormal call signal and carrying out the communication restriction, the abnormal call signal is unified without affecting the call signal from the general user. Congestion caused by concentrating on some lines can be avoided.
[0087]
In addition, when the switching node accepts the call signal, it determines whether the call signal is subject to regulation, and if it is subject to regulation, the line is cut off. Is not received by the user's telephone.
[0088]
Furthermore, even if the maintenance person specifies the source of the abnormal call signal and does not perform the operation of blocking the telephone line connected to the call source, the occurrence of the abnormal call signal is detected and communication is restricted. It is possible to prevent congestion of the switching network at an early stage.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a configuration example of a communication restriction system of the present invention.
FIG. 2 is a flowchart showing an operation procedure of the communication restriction system of the present invention.
FIG. 3 is a flowchart showing an operation procedure of the communication restriction system of the present invention.
FIG. 4 is a block diagram showing another configuration of the communication restriction system of the first embodiment.
FIG. 5 is a block diagram illustrating a configuration example of a communication restriction system according to a second embodiment.
FIG. 6 is a flowchart showing an operation procedure of the communication restriction system of the third embodiment.
[Explanation of symbols]
10 Regulatory control device
12 Calling number storage
14 Control number control part
16 Output section
18 Input section
20a, 20b exchange node
22a Node storage unit
24a Node control unit
30a-30d group exchange node
40 Telephone line
50, 52, 54 signal lines
60 switching network
70 Information processing equipment

Claims

Sending a call signal including information on a calling party number that is a calling party telephone number and a called party number that is a called party telephone number, and a calling party information terminal that is identified by the calling party number, and a called party that is identified by the called party number A communication regulation system having an information node and an exchange node that is communicably connected via a telephone line,
The reception time and number of receptions of the incomplete call origination number corresponding to the incomplete call origination number which is the origination number included in the call origination signal blocked by the origination side information terminal before the line connection with the callee information terminal And when the difference between the reception time of the incomplete call origination number and the stored reception time is within a preset specified time and the number of receptions exceeds a preset specified number of times, A regulation control device that transmits an incomplete call origination number to the exchange node as a regulation calling number that is a calling number subject to communication regulation;
The exchange node is
The restriction calling number transmitted from the restriction control device is stored, and when there is a restriction calling number that matches the calling number included in the received calling signal, the telephone line is not transmitted without transmitting the calling signal. A communication restriction system that blocks and transmits an incomplete call number included in the call signal to the restriction control device.

Sending a call signal including information on a calling party number that is a calling party telephone number and a called party number that is a called party telephone number, and a calling party information terminal that is identified by the calling party number, and a called party that is identified by the called party number A communication regulation system having an information node and an exchange node that is communicably connected via a telephone line,
Of the usage information including the calling number included in the calling signal received from the switching node, the calling signal reception time and the line cutoff time of the called information terminal, the called side information that has received the calling signal For an incomplete call, which is a communication blocked by the originating information terminal before the line connection with the terminal, an incomplete call origination number that is a calling number included in the call signal, the line cutoff time, and the number of incomplete call occurrences Including a use information processing device that stores unsuccessful call information including a predetermined storage time and transmits the stored unsuccessful call information to the switching node every time the storage time elapses,
The exchange node is
The usage information of the call signal is transmitted to the usage information processing apparatus, and the time between the line cutoff times included in the incomplete call information received from the usage information processing apparatus is within a predetermined time set in advance. When the number of incomplete call occurrences exceeds a predetermined number of times set in advance, the incomplete call origination number included in the incomplete call information is stored as a restriction origination number that is a call origination target subject to communication regulation, and received And a communication restriction system that blocks the telephone line without transmitting the call signal when there is a restriction call number that matches the call number included in the call signal.

The exchange node is
A call signal including the restriction call number as the calling number is held for a preset waiting time, and when a line disconnection request signal for requesting line disconnection is received from the calling side information terminal at the waiting time, The communication restriction system according to claim 1 or 2, wherein a call signal is deleted without being transmitted, and if the line disconnection request signal is not received during the waiting time, the call signal is transmitted to the callee information terminal. .

Sending a call signal including information on a calling party number that is a calling party telephone number and a called party number that is a called party telephone number, and a calling party information terminal that is identified by the calling party number, and a called party that is identified by the called party number An exchange node connected to an information terminal via a telephone line so as to be communicable,
Corresponds to the restricted calling number that is the calling number subject to communication restriction, and the incomplete call calling number that is the calling number included in the calling signal blocked by the calling information terminal before the line connection with the called information terminal A node storage unit for storing the reception time and the number of receptions of the call signal;
The reception time and the number of receptions are stored in the node storage unit corresponding to the incomplete call origination number included in the received call signal, and the difference between the reception time of the call signal and the stored reception time is stored. If the time is within a predetermined time set in advance and the number of receptions exceeds the predetermined number of times set, the incomplete call origination number is stored in the node storage unit as the restriction call origination number, and the received call is received A node control unit that shuts off the telephone line without transmitting the call signal when there is a restricted calling number in the node storage unit that matches the calling number included in the signal;
A switching node with

The node control unit
A call signal including the restriction call number as the calling number is held in the node storage unit for a preset standby time, and a line disconnection request signal for requesting line disconnection from the caller information terminal is set in the standby time. If it is received, the call signal is deleted from the node storage unit without being transmitted, and if the line disconnection request signal is not received during the waiting time, the call signal is transmitted to the callee information terminal The exchange node according to claim 4.

Sending a call signal including information on a calling party number that is a calling party telephone number and a called party number that is a called party telephone number, and a calling party information terminal that is identified by the calling party number, and a called party that is identified by the called party number A communication restriction method by an exchange node connected to be able to communicate with an information terminal via a telephone line,
The incomplete call origination corresponding to the incomplete call origination number, which is a call origination number included in the call origination signal received by the switching side node before the line connection with the destination information terminal is received. Stores the reception time and number of reception of the number,
Obtaining a time difference between the reception time of the incomplete call origination number and the stored reception time;
Compare the calculated time with a preset time,
If the obtained time is within the specified time, the number of receptions is compared with a preset specified number of times,
If the number of notifications exceeds the specified number of times, the incomplete call origination number is stored in the exchange node as a regulation call origination number that is a call origination number of a call signal subject to communication regulation,
When the calling signal is received, it is checked whether or not the switching node has a restricted calling number that matches the calling number included in the calling signal. A communication restriction method for blocking the telephone line without transmitting a call signal.

Sending a call signal including information on a calling party number that is a calling party telephone number and a called party number that is a called party telephone number, and a calling party information terminal that is identified by the calling party number, and a called party that is identified by the called party number A communication restriction method by an exchange node connected to be able to communicate with an information terminal via a telephone line,
Of the usage information including the calling number included in the calling signal received from the switching node, the calling signal reception time and the line cutoff time of the called information terminal, the called side information that has received the calling signal For an incomplete call, which is a communication blocked by the originating information terminal before the line connection with the terminal, an incomplete call origination number that is a calling number included in the call signal, the line cutoff time, and the number of incomplete call occurrences A use information processing apparatus that transmits uncompleted call information including the information to the exchange node,
When the usage information is received from the exchange node, the incomplete call information is stored in the usage information processing apparatus for each preset accumulation time,
The stored incomplete call information is transmitted from the usage information processing apparatus to the exchange node every time the accumulation time elapses,
The incomplete call information is received from the use information processing apparatus, the time between the line disconnection times included in the incomplete call information is within a predetermined time set in advance, and the number of incomplete call occurrences is set in advance When the specified number of times is exceeded, the incomplete call origination number included in the incomplete call information is stored in the exchange node as a regulation origination number that is a call origination number of a call signal subject to communication regulation,
When the calling signal is received, it is checked whether or not there is a restricted calling number in the switching node that matches the calling number included in the calling signal. If there is a restricted calling number that matches the calling number, A communication restriction method for blocking the telephone line without transmitting a call signal.

When receiving a calling signal including the restricted calling number as the calling number, the calling signal is held in the exchange node for a preset standby time,
If a line disconnection request signal for requesting line disconnection is received from the calling side information terminal during the standby time, the call disconnecting signal is deleted from the switching node without being transmitted, and the line disconnection request is transmitted during the standby time. The communication restriction method according to claim 6 or 7, wherein when a signal is not received, the call signal is transmitted to the callee information terminal.