WO2006121545A3 - Systems and methods for facsimile echo cancellation - Google Patents

Systems and methods for facsimile echo cancellation Download PDF

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Publication number
WO2006121545A3
WO2006121545A3 PCT/US2006/013060 US2006013060W WO2006121545A3 WO 2006121545 A3 WO2006121545 A3 WO 2006121545A3 US 2006013060 W US2006013060 W US 2006013060W WO 2006121545 A3 WO2006121545 A3 WO 2006121545A3
Authority
WO
WIPO (PCT)
Prior art keywords
fax
systems
methods
facsimile
signal
Prior art date
Application number
PCT/US2006/013060
Other languages
French (fr)
Other versions
WO2006121545A2 (en
Inventor
Robert Smith
Alan Erringer
Original Assignee
Callwave Inc
Robert Smith
Alan Erringer
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 Callwave Inc, Robert Smith, Alan Erringer filed Critical Callwave Inc
Priority to CA002607488A priority Critical patent/CA2607488A1/en
Priority to EP06740728A priority patent/EP1884032A2/en
Publication of WO2006121545A2 publication Critical patent/WO2006121545A2/en
Publication of WO2006121545A3 publication Critical patent/WO2006121545A3/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/06—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors
    • H04M11/066—Telephone sets adapted for data transmision
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/002—Applications of echo suppressors or cancellers in telephonic connections
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M2201/00—Electronic components, circuits, software, systems or apparatus used in telephone systems
    • H04M2201/52—Telephonic communication in combination with fax communication

Abstract

The present invention is related to methods and systems for reducing or canceling echoes during fax communications In an embodiment, during a fax call, a first fax signal from a first fax device intended for a second fax device is detected. Based at least in part on detecting the first fax signal from the first fax device (200) or on the termination of the first fax signal, an echo audio packet is muted, wherein the echo audio packet is at least partly the result of the first fax signal being transmitted over a network, the network including at least a data network (203).
PCT/US2006/013060 2005-05-09 2006-04-07 Systems and methods for facsimile echo cancellation WO2006121545A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CA002607488A CA2607488A1 (en) 2005-05-09 2006-04-07 Systems and methods for facsimile echo cancellation
EP06740728A EP1884032A2 (en) 2005-05-09 2006-04-07 Systems and methods for facsimile echo cancellation

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/124,901 US7808936B2 (en) 2005-05-09 2005-05-09 Systems and methods for facsimile echo cancellation
US11/124,901 2005-05-09

Publications (2)

Publication Number Publication Date
WO2006121545A2 WO2006121545A2 (en) 2006-11-16
WO2006121545A3 true WO2006121545A3 (en) 2007-03-08

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2006/013060 WO2006121545A2 (en) 2005-05-09 2006-04-07 Systems and methods for facsimile echo cancellation

Country Status (4)

Country Link
US (2) US7808936B2 (en)
EP (1) EP1884032A2 (en)
CA (1) CA2607488A1 (en)
WO (1) WO2006121545A2 (en)

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US8325635B2 (en) 2012-12-04
US20060250997A1 (en) 2006-11-09

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