ATE111669T1 - Detektor für niederfrequenz-wechselstromsignale für eine telefonverbindungsleitung. - Google Patents

Detektor für niederfrequenz-wechselstromsignale für eine telefonverbindungsleitung.

Info

Publication number
ATE111669T1
ATE111669T1 AT90111425T AT90111425T ATE111669T1 AT E111669 T1 ATE111669 T1 AT E111669T1 AT 90111425 T AT90111425 T AT 90111425T AT 90111425 T AT90111425 T AT 90111425T AT E111669 T1 ATE111669 T1 AT E111669T1
Authority
AT
Austria
Prior art keywords
detector
signals
low frequency
input
output
Prior art date
Application number
AT90111425T
Other languages
English (en)
Inventor
Andre Bonvallet
Robert Girard
Daniel Perrein
Original Assignee
Alcatel Business Systems
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 Alcatel Business Systems filed Critical Alcatel Business Systems
Application granted granted Critical
Publication of ATE111669T1 publication Critical patent/ATE111669T1/de

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/18—Electrical details
    • H04Q1/30—Signalling arrangements; Manipulation of signalling currents
    • H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
    • H04Q1/444—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
    • H04Q1/46—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies comprising means for distinguishing between a signalling current of predetermined frequency and a complex current containing that frequency, e.g. speech current
    • 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
    • H04Q1/446—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using one signalling frequency

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Telephonic Communication Services (AREA)
  • Telephone Function (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
AT90111425T 1989-06-19 1990-06-18 Detektor für niederfrequenz-wechselstromsignale für eine telefonverbindungsleitung. ATE111669T1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR898908119A FR2648661B1 (fr) 1989-06-19 1989-06-19 Detecteur de signaux alternatifs basse frequence notamment pour joncteur telephonique

Publications (1)

Publication Number Publication Date
ATE111669T1 true ATE111669T1 (de) 1994-09-15

Family

ID=9382882

Family Applications (1)

Application Number Title Priority Date Filing Date
AT90111425T ATE111669T1 (de) 1989-06-19 1990-06-18 Detektor für niederfrequenz-wechselstromsignale für eine telefonverbindungsleitung.

Country Status (6)

Country Link
US (1) US5218635A (de)
EP (1) EP0404002B1 (de)
AT (1) ATE111669T1 (de)
DE (1) DE69012446T2 (de)
ES (1) ES2062193T3 (de)
FR (1) FR2648661B1 (de)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI99166C (fi) * 1994-10-14 1997-10-10 Nokia Telecommunications Oy Menetelmä ennalta määrätyn taajuisen signaalin detektoimiseksi sekä ilmaisinpiiri
US5544241A (en) * 1995-06-27 1996-08-06 Andrew S. Dibner Telephone ring detector
US5920846A (en) * 1996-02-27 1999-07-06 Southwestern Bell Telephone Co. Method and system for processing a service request relating to installation, maintenance or repair of telecommunications services provided to a customer premises
EP0899926A1 (de) * 1997-08-25 1999-03-03 Alcatel Telekommunikationsvorrichtung mit Anruferidentifizierung
US20020099966A1 (en) * 2001-01-25 2002-07-25 Sigmatel, Inc. Method and apparatus for waking up a circuit and applications thereof
US7110525B1 (en) 2001-06-25 2006-09-19 Toby Heller Agent training sensitive call routing system
US7372952B1 (en) 2002-03-07 2008-05-13 Wai Wu Telephony control system with intelligent call routing
US7023979B1 (en) 2002-03-07 2006-04-04 Wai Wu Telephony control system with intelligent call routing
US9818136B1 (en) 2003-02-05 2017-11-14 Steven M. Hoffberg System and method for determining contingent relevance
US7676034B1 (en) 2003-03-07 2010-03-09 Wai Wu Method and system for matching entities in an auction
US8874477B2 (en) 2005-10-04 2014-10-28 Steven Mark Hoffberg Multifactorial optimization system and method
US8300798B1 (en) 2006-04-03 2012-10-30 Wai Wu Intelligent communication routing system and method
EP3215637B1 (de) 2014-11-03 2019-07-03 F. Hoffmann-La Roche AG Verfahren und biomarker zur vorhersage der effizienz der behandlung mit ox40 agonisten

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT338881B (de) * 1974-10-10 1977-09-26 Kapsch Telephon Telegraph Schaltungsanordnung fur eine sprachgeschutzte empfangseinrichtung fur mehrfrequenz-codewahl bei fernmeldevermittlungseinrichtungen, insbesondere fernsprechvermittlungsanlagen
US4386239A (en) * 1980-06-17 1983-05-31 Bell Telephone Laboratories, Incorporated Multifrequency tone detector
US4477698A (en) * 1982-09-07 1984-10-16 Melita Electronics Labs, Inc. Apparatus for detecting pick-up at a remote telephone set
FR2551604B1 (fr) * 1983-09-06 1985-10-25 Thomson Csf Mat Tel Dispositif de teletaxation pour terminal telephonique electronique
US4689760A (en) * 1984-11-09 1987-08-25 Digital Sound Corporation Digital tone decoder and method of decoding tones using linear prediction coding
US4599495A (en) * 1985-02-28 1986-07-08 Northern Telecom Limited Apparatus for multifrequency signalling tone detection
DE3710695A1 (de) * 1987-03-31 1988-10-20 Nixdorf Computer Ag Schaltungsanordnung zum erkennen von doppelton-mehrfrequenzsignalen in fernsprechanlagen

Also Published As

Publication number Publication date
US5218635A (en) 1993-06-08
DE69012446T2 (de) 1995-02-02
DE69012446D1 (de) 1994-10-20
FR2648661A1 (fr) 1990-12-21
ES2062193T3 (es) 1994-12-16
EP0404002B1 (de) 1994-09-14
FR2648661B1 (fr) 1994-03-04
EP0404002A1 (de) 1990-12-27

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Legal Events

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