GB2430832B - Systems and methods for dual-tone multiple frequency symbol detection - Google Patents

Systems and methods for dual-tone multiple frequency symbol detection

Info

Publication number
GB2430832B
GB2430832B GB0519961A GB0519961A GB2430832B GB 2430832 B GB2430832 B GB 2430832B GB 0519961 A GB0519961 A GB 0519961A GB 0519961 A GB0519961 A GB 0519961A GB 2430832 B GB2430832 B GB 2430832B
Authority
GB
United Kingdom
Prior art keywords
dual
systems
methods
multiple frequency
symbol detection
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.)
Active
Application number
GB0519961A
Other versions
GB0519961D0 (en
GB2430832A (en
Inventor
Andrew Gough
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.)
Trinity Convergence Inc
Original Assignee
Trinity Convergence 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 Trinity Convergence Inc filed Critical Trinity Convergence Inc
Priority to GB0519961A priority Critical patent/GB2430832B/en
Publication of GB0519961D0 publication Critical patent/GB0519961D0/en
Priority to TW095136333A priority patent/TW200729975A/en
Publication of GB2430832A publication Critical patent/GB2430832A/en
Application granted granted Critical
Publication of GB2430832B publication Critical patent/GB2430832B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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)
  • Telephone Function (AREA)
  • Circuits Of Receivers In General (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
GB0519961A 2005-09-30 2005-09-30 Systems and methods for dual-tone multiple frequency symbol detection Active GB2430832B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB0519961A GB2430832B (en) 2005-09-30 2005-09-30 Systems and methods for dual-tone multiple frequency symbol detection
TW095136333A TW200729975A (en) 2005-09-30 2006-09-29 Systems and methods for dual-tone multiple frequency symbol detection

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0519961A GB2430832B (en) 2005-09-30 2005-09-30 Systems and methods for dual-tone multiple frequency symbol detection

Publications (3)

Publication Number Publication Date
GB0519961D0 GB0519961D0 (en) 2005-11-09
GB2430832A GB2430832A (en) 2007-04-04
GB2430832B true GB2430832B (en) 2007-06-06

Family

ID=35395072

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0519961A Active GB2430832B (en) 2005-09-30 2005-09-30 Systems and methods for dual-tone multiple frequency symbol detection

Country Status (2)

Country Link
GB (1) GB2430832B (en)
TW (1) TW200729975A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104092805B (en) * 2013-04-01 2018-09-07 深圳富泰宏精密工业有限公司 Communication apparatus Dialing Method and system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002021855A2 (en) * 2000-09-08 2002-03-14 Intel Corporation Tone detection for integrated telecommunications processing

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002021855A2 (en) * 2000-09-08 2002-03-14 Intel Corporation Tone detection for integrated telecommunications processing

Also Published As

Publication number Publication date
GB0519961D0 (en) 2005-11-09
TW200729975A (en) 2007-08-01
GB2430832A (en) 2007-04-04

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