EP0953249A1 - Detecteur de rappel telephonique automatique - Google Patents

Detecteur de rappel telephonique automatique

Info

Publication number
EP0953249A1
EP0953249A1 EP98960308A EP98960308A EP0953249A1 EP 0953249 A1 EP0953249 A1 EP 0953249A1 EP 98960308 A EP98960308 A EP 98960308A EP 98960308 A EP98960308 A EP 98960308A EP 0953249 A1 EP0953249 A1 EP 0953249A1
Authority
EP
European Patent Office
Prior art keywords
callback
detector
condition
channel
incoming
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.)
Withdrawn
Application number
EP98960308A
Other languages
German (de)
English (en)
Inventor
Jeremy Skene
Charles Gritton
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.)
Coriant Operations Inc
Original Assignee
Tellabs Operations Inc
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 Tellabs Operations Inc filed Critical Tellabs Operations Inc
Publication of EP0953249A1 publication Critical patent/EP0953249A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/42—Systems providing special services or facilities to subscribers
    • H04M3/46—Arrangements for calling a number of substations in a predetermined sequence until an answer is obtained

Definitions

  • a switched telephone system has an international trunk line for carrying voice signals to another country and a signaling channel associated with the trunk line.
  • a signaling monitor is connected to the signaling channel for monitoring signals on the channel and detecting signals that are being transmitted from a location at a remote end of the international trunk line. The signaling monitor provides a remote-call indication signal when such a condition is detected.
  • a callback detector is operatively connected to the international trunk line. The callback detector is also connected to the signaling monitor for receiving the remote-call indication signal.
  • the callback detector When the callback detector receives a remote-call indication signal it begins to monitor a corresponding channel on the trunk line for a signal that is indicative of a call emanating from a callback service. When such a signal is detected, the callback detector either blocks the call or sends a callback indication signal to the central switching system or billing system of the telecommunications company for appropriate action. Such action would include blocking the call or applying an appropriate surcharge to the account of the caller.
  • the signaling channel 600 is embodied as a standard or non-standard signaling channel, such as, but not limited to, international signaling system 5, 6, or 7.
  • the international trunk lines are connected through a callback detector 300 and the signaling channel 600 is connected through a signaling monitor 500.
  • the signaling monitor 500 is preferably incorporated into the switched telephone network 100.
  • the signaling monitor 500 is connected to the callback detector 300 and the callback detector 300 is connected to the switching system or billing system 400 of the international long distance carrier in Country A.
  • the signaling monitor 500 monitors the signaling channel 600 for an incoming call, that is, a call originating from the remote end of the international trunk lines 200.
  • the call could originate from Country B which has a lower international long distance rate for calls into Country A relative to the rate for calls into Country B from Country A.
  • the signaling monitor 500 communicates that information to the callback detector 300 and identifies the particular channel that is receiving the incoming call.
  • the callback detector then monitors the specified channel for any of the following telltale conditions within a preselected initial period of the call: (1) an incoming dial tone; (2) outgoing dual tone multi-frequency (DTMF) signaling; or (3) an incoming ringing tone.
  • An incoming dial tone would not normally be present on an incoming call.
  • a callback subscriber often uses DTMF signals to signal his desired call destination to the callback system. While subscribers use DTMF signaling to control voice response systems such as voice mail, such signaling is not normally used during the initial period of an incoming call, defined as a predetermined time interval from the commencement of the call.
  • voice response systems such as voice mail
  • an incoming ringing tone from the selected destination telephone indicates to the callback subscriber that the callback call is being attempted.
  • the call is determined to be a "callback" call.
  • the callback detector 300 may force the termination or disruption of the call by any number of methods, such as interrupting the speech path between the switched network 100 and the international trunks 200. Such interruption may include insertion of idle code in both directions in the speech path or the insertion of an "all trunks busy" or other tone in the speech path.
  • the presence of a callback call can be communicated by the callback detector 300 to the telephone company's switching or billing system 400 so that the call can be disconnected or blocked, or so that an appropriate surcharge can be applied to the subscriber's telephone billing account.
  • Signaling between the callback detector 300, the signaling monitor 500, and the switching or billing system 400 is preferably sent via dedicated connections or within the signaling protocol of the speech channel 200.

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Telephonic Communication Services (AREA)
  • Meter Arrangements (AREA)

Abstract

Détecteur (300) de système de rappel téléphonique automatique, connecté entre une ligne interurbaine (200) et un réseau téléphonique local commuté (100), qui permet de détecter et de décourager le fonctionnement d'un système de rappel sur une ligne interurbaine. Ledit système de rappel permet à un utilisateur du réseau téléphonique commuté (100) d'utiliser les appels entrants sur la ligne interurbaine comme passerelles pour placer des appels dans un réseau téléphonique à distance, ce qui lui évite de payer les taxes du réseau local (100) pour les appels destinés audit réseau à distance. Le détecteur de système de rappel est configuré de façon à déterminer la présence, dans un appel entrant sur la ligne interurbaine (200), d'une condition indiquant qu'un système de rappel est actif. Cette condition peut être définie comme étant, sur la ligne interurbaine, soit la tonalité d'invitation à numéroter ou de retour d'appel, soit la tonalité de signalisation multifréquence à double tonalité (DTMF). Afin de permettre la transmission de ces tonalités dans le cours normal d'un appel pouvant légitimement les utiliser, le fonctionnement du détecteur de rappel peut avantageusement être limité à une durée prédéterminée définissant un intervalle d'appel initial. Le détecteur (300) de rappel peut être configuré de façon à interrompre la communication durant l'appel après détection de la condition, ou bien de façon à provoquer la déconnexion de l'appel ou l'estimation des taxes facturées au destinataire local de l'appel.
EP98960308A 1997-11-18 1998-11-18 Detecteur de rappel telephonique automatique Withdrawn EP0953249A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US6567497P 1997-11-18 1997-11-18
US65674P 1997-11-18
PCT/US1998/024769 WO1999034578A1 (fr) 1997-11-18 1998-11-18 Detecteur de rappel telephonique automatique

Publications (1)

Publication Number Publication Date
EP0953249A1 true EP0953249A1 (fr) 1999-11-03

Family

ID=22064353

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98960308A Withdrawn EP0953249A1 (fr) 1997-11-18 1998-11-18 Detecteur de rappel telephonique automatique

Country Status (6)

Country Link
EP (1) EP0953249A1 (fr)
JP (1) JP2001510005A (fr)
AU (1) AU1593899A (fr)
CA (1) CA2278794A1 (fr)
MX (1) MXPA99006871A (fr)
WO (1) WO1999034578A1 (fr)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0828775B2 (ja) * 1991-05-22 1996-03-21 松下電器産業株式会社 電話装置
US5579382A (en) * 1994-02-28 1996-11-26 Kokusai Denshin Denwa Kabushiki Kaisha International direct dialing booking system
JPH07264323A (ja) * 1994-03-18 1995-10-13 Fujitsu Ltd キープコールバック装置
US5533100A (en) * 1994-07-29 1996-07-02 At&T Corp. Communications system call complete arrangement
US5661790A (en) * 1995-11-03 1997-08-26 Ericsson, Inc. Call back service for a regulatory restrictive area

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9934578A1 *

Also Published As

Publication number Publication date
AU1593899A (en) 1999-07-19
WO1999034578A1 (fr) 1999-07-08
MXPA99006871A (es) 2005-04-28
CA2278794A1 (fr) 1999-07-08
JP2001510005A (ja) 2001-07-24

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