AU6425798A - Method and apparatus for detecting tones - Google Patents

Method and apparatus for detecting tones

Info

Publication number
AU6425798A
AU6425798A AU64257/98A AU6425798A AU6425798A AU 6425798 A AU6425798 A AU 6425798A AU 64257/98 A AU64257/98 A AU 64257/98A AU 6425798 A AU6425798 A AU 6425798A AU 6425798 A AU6425798 A AU 6425798A
Authority
AU
Australia
Prior art keywords
detecting tones
tones
detecting
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.)
Abandoned
Application number
AU64257/98A
Inventor
Sergei Fedorov
Galina Titova
Jury Zakharov
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.)
Nortel Networks Ltd
Original Assignee
Northern Telecom Ltd
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 Northern Telecom Ltd filed Critical Northern Telecom Ltd
Publication of AU6425798A publication Critical patent/AU6425798A/en
Abandoned legal-status Critical Current

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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
AU64257/98A 1997-11-27 1997-11-27 Method and apparatus for detecting tones Abandoned AU6425798A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/RU1997/000378 WO1999029085A2 (en) 1997-11-27 1997-11-27 Method and apparatus for detecting tones

Publications (1)

Publication Number Publication Date
AU6425798A true AU6425798A (en) 1999-06-16

Family

ID=20130171

Family Applications (1)

Application Number Title Priority Date Filing Date
AU64257/98A Abandoned AU6425798A (en) 1997-11-27 1997-11-27 Method and apparatus for detecting tones

Country Status (2)

Country Link
AU (1) AU6425798A (en)
WO (1) WO1999029085A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7003093B2 (en) * 2000-09-08 2006-02-21 Intel Corporation Tone detection for integrated telecommunications processing
WO2002035821A1 (en) * 2000-10-27 2002-05-02 Siemens Aktiengesellschaft Call-detection device in telecommunication terminals with analogue exchange interfaces

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4354248A (en) * 1979-11-28 1982-10-12 Motorola, Inc. Programmable multifrequency tone receiver
EP0440028A3 (en) * 1990-01-29 1992-07-22 Dialogic Corporation Multifrequency tone signal detector
US5321745A (en) * 1992-05-26 1994-06-14 Vmx, Inc. Adaptive efficient single/dual tone decoder apparatus and method for identifying call-progression signals
CA2149163C (en) * 1994-06-28 1999-01-26 Jeffrey Wayne Daugherty Detection of tones while minimizing incorrect identification of other sounds as tones

Also Published As

Publication number Publication date
WO1999029085A2 (en) 1999-06-10
WO1999029085A3 (en) 1999-11-18

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