WO1996013130A3 - Universal call progress analysis system - Google Patents

Universal call progress analysis system Download PDF

Info

Publication number
WO1996013130A3
WO1996013130A3 PCT/US1995/014277 US9514277W WO9613130A3 WO 1996013130 A3 WO1996013130 A3 WO 1996013130A3 US 9514277 W US9514277 W US 9514277W WO 9613130 A3 WO9613130 A3 WO 9613130A3
Authority
WO
WIPO (PCT)
Prior art keywords
pattern
descriptors
signal
intervals
detected
Prior art date
Application number
PCT/US1995/014277
Other languages
French (fr)
Other versions
WO1996013130A2 (en
Inventor
Kevin C Kicklighter
Original Assignee
Excel Ind
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 Excel Ind filed Critical Excel Ind
Priority to EP95939735A priority Critical patent/EP0812515A2/en
Priority to JP8514151A priority patent/JPH10507604A/en
Priority to AU41440/96A priority patent/AU4144096A/en
Publication of WO1996013130A2 publication Critical patent/WO1996013130A2/en
Publication of WO1996013130A3 publication Critical patent/WO1996013130A3/en

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

Abstract

A call progress analysis system is generic to any telecommunications system with which it is used due to configurable detection parameters. A signal on a channel of the telecommunications system is detected in intervals of changing frequency composition and compared to stored pattern descriptors, each of which defines a different call progress signal. The pattern descriptor parameters are configurable and include values for identifying tones present in the signal and the relative cadences of those tones. A separate list of tone descriptors, referenced by the pattern descriptors, are configurable and identify different tones by signal power at different frequencies. A progressive matching technique compares each successive interval of the detected signal to the successive intervals defined by each pattern descriptor, and generates a possibility list of pattern descriptors which may match the detected signal. As each interval is detected and compared to the corresponding intervals of the pattern descriptors, more descriptors are removed from the possibility list, until finally only one matching descriptor remains. Further matching may be required if desired, to ensure that the pattern continues to match for a minimum number of intervals.
PCT/US1995/014277 1994-10-17 1995-10-10 Universal call progress analysis system WO1996013130A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP95939735A EP0812515A2 (en) 1994-10-17 1995-10-10 Universal call progress analysis system
JP8514151A JPH10507604A (en) 1994-10-17 1995-10-10 General-purpose call progress analysis system
AU41440/96A AU4144096A (en) 1994-10-17 1995-10-10 Universal call progress analysis system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US32439394A 1994-10-17 1994-10-17
US08/324,393 1994-10-17

Publications (2)

Publication Number Publication Date
WO1996013130A2 WO1996013130A2 (en) 1996-05-02
WO1996013130A3 true WO1996013130A3 (en) 1996-06-27

Family

ID=23263384

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1995/014277 WO1996013130A2 (en) 1994-10-17 1995-10-10 Universal call progress analysis system

Country Status (4)

Country Link
EP (1) EP0812515A2 (en)
JP (1) JPH10507604A (en)
AU (1) AU4144096A (en)
WO (1) WO1996013130A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000074351A2 (en) * 1999-06-02 2000-12-07 Brooktrout Technology, Inc. Call progress detection

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4935958A (en) * 1986-09-22 1990-06-19 Dytel Corporation Busy/no-answer call completion equipment
JPH02164170A (en) * 1988-12-19 1990-06-25 Toshiba Corp Electronic exchange
US5007000A (en) * 1989-06-28 1991-04-09 International Telesystems Corp. Classification of audio signals on a telephone line
US5023906A (en) * 1990-04-24 1991-06-11 The Telephone Connection Method for monitoring telephone call progress
EP0493056A2 (en) * 1990-12-21 1992-07-01 Codex Corporation Call progress decoder for multiple cadenced tones on telephone lines
US5311589A (en) * 1992-03-31 1994-05-10 At&T Bell Laboratories Apparatus and method for audible signaling tone recognition

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4935958A (en) * 1986-09-22 1990-06-19 Dytel Corporation Busy/no-answer call completion equipment
JPH02164170A (en) * 1988-12-19 1990-06-25 Toshiba Corp Electronic exchange
US5007000A (en) * 1989-06-28 1991-04-09 International Telesystems Corp. Classification of audio signals on a telephone line
US5023906A (en) * 1990-04-24 1991-06-11 The Telephone Connection Method for monitoring telephone call progress
EP0493056A2 (en) * 1990-12-21 1992-07-01 Codex Corporation Call progress decoder for multiple cadenced tones on telephone lines
US5311589A (en) * 1992-03-31 1994-05-10 At&T Bell Laboratories Apparatus and method for audible signaling tone recognition

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 14, no. 425 (E - 0977) 13 September 1990 (1990-09-13) *

Also Published As

Publication number Publication date
EP0812515A2 (en) 1997-12-17
JPH10507604A (en) 1998-07-21
WO1996013130A2 (en) 1996-05-02
AU4144096A (en) 1996-05-15

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