DE3786266D1 - Vorrichtung zum anschluss einer datenverarbeitungseinrichtung an ein telefonnetz. - Google Patents

Vorrichtung zum anschluss einer datenverarbeitungseinrichtung an ein telefonnetz.

Info

Publication number
DE3786266D1
DE3786266D1 DE8787308679T DE3786266T DE3786266D1 DE 3786266 D1 DE3786266 D1 DE 3786266D1 DE 8787308679 T DE8787308679 T DE 8787308679T DE 3786266 T DE3786266 T DE 3786266T DE 3786266 D1 DE3786266 D1 DE 3786266D1
Authority
DE
Germany
Prior art keywords
network
data processing
appts
equipment
standard
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.)
Expired - Lifetime
Application number
DE8787308679T
Other languages
English (en)
Other versions
DE3786266T2 (de
Inventor
John Dennis Hartley
Mark Germain
Brian Douglas Key
Ray Jepson
Victor Gerald Golding
Steven Cook
Paul David Maddison
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.)
International Business Machines Corp
Original Assignee
International Business Machines Corp
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 International Business Machines Corp filed Critical International Business Machines Corp
Publication of DE3786266D1 publication Critical patent/DE3786266D1/de
Application granted granted Critical
Publication of DE3786266T2 publication Critical patent/DE3786266T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S379/00—Telephonic communications
    • Y10S379/912—Geographically adaptive

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Telephonic Communication Services (AREA)
  • Communication Control (AREA)
DE87308679T 1987-09-30 1987-09-30 Vorrichtung zum Anschluss einer Datenverarbeitungseinrichtung an ein Telefonnetz. Expired - Lifetime DE3786266T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP87308679A EP0309627B1 (de) 1987-09-30 1987-09-30 Vorrichtung zum Anschluss einer Datenverarbeitungseinrichtung an ein Telefonnetz

Publications (2)

Publication Number Publication Date
DE3786266D1 true DE3786266D1 (de) 1993-07-22
DE3786266T2 DE3786266T2 (de) 1993-12-02

Family

ID=8198055

Family Applications (1)

Application Number Title Priority Date Filing Date
DE87308679T Expired - Lifetime DE3786266T2 (de) 1987-09-30 1987-09-30 Vorrichtung zum Anschluss einer Datenverarbeitungseinrichtung an ein Telefonnetz.

Country Status (4)

Country Link
US (1) US4868863A (de)
EP (1) EP0309627B1 (de)
JP (1) JPH0194757A (de)
DE (1) DE3786266T2 (de)

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US6487243B1 (en) 1999-03-08 2002-11-26 International Business Machines Corporation Modems, methods, and computer program products for recovering from errors in a tone reversal sequence between two modems
US6553518B1 (en) 1999-03-08 2003-04-22 International Business Machines Corporation Severe error detectors, methods and computer program products that use constellation specific error event thresholds to detect severe error events during demodulation of a signal comprising symbols from a plurality of symbol constellations
US6389064B1 (en) 1999-03-08 2002-05-14 International Business Machines Corporation Modems, methods, and computer program products for identifying a signaling alphabet in variance with an ideal alphabet due to digital impairments
US6381267B1 (en) 1999-03-08 2002-04-30 International Business Machines Corporation Modems, methods, and computer program products for falling back to a lower data rate protocol upon detecting abnormal line conditions during startup
US6661837B1 (en) 1999-03-08 2003-12-09 International Business Machines Corporation Modems, methods, and computer program products for selecting an optimum data rate using error signals representing the difference between the output of an equalizer and the output of a slicer or detector
US7003030B2 (en) 1999-03-08 2006-02-21 Lenovo (Singapore) Pte. Ltd. Receivers, methods, and computer program products for an analog modem that receives data signals from a digital modem
US6341360B1 (en) 1999-03-08 2002-01-22 International Business Machines Corporation Decision feedback equalizers, methods, and computer program products for detecting severe error events and preserving equalizer filter characteristics in response thereto
US6661847B1 (en) 1999-05-20 2003-12-09 International Business Machines Corporation Systems methods and computer program products for generating and optimizing signal constellations
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US6662322B1 (en) 1999-10-29 2003-12-09 International Business Machines Corporation Systems, methods, and computer program products for controlling the error rate in a communication device by adjusting the distance between signal constellation points
US6826157B1 (en) 1999-10-29 2004-11-30 International Business Machines Corporation Systems, methods, and computer program products for controlling data rate reductions in a communication device by using a plurality of filters to detect short-term bursts of errors and long-term sustainable errors
US6611563B1 (en) 1999-10-29 2003-08-26 International Business Machines Corporation Systems, methods and computer program products for data mode refinement of modem constellation points
US6823017B1 (en) 1999-10-29 2004-11-23 International Business Machines Corporation Systems, methods and computer program products for filtering glitches from measured values in a sequence of code points
US6505222B1 (en) 1999-10-29 2003-01-07 International Business Machines Corporation Systems methods and computer program products for controlling undesirable bias in an equalizer
US6765955B1 (en) 1999-10-29 2004-07-20 International Business Machines Corporation Methods, systems and computer program products establishing a communication configuration for a modem connection to compensate for echo noise
US6816545B1 (en) 1999-10-29 2004-11-09 International Business Machines Corporation Systems, methods and computer program products for identifying digital impairments in modems based on clusters and/or skips in pulse code modulation signal levels
US6839382B1 (en) 1999-10-29 2005-01-04 International Business Machines Corporation System, methods and computer program products for identifying digital impairments in modem signals using signature analysis and signal level comparison analysis
US6792004B1 (en) 1999-10-29 2004-09-14 International Business Machines Corporation Systems, methods and computer program products for averaging learned levels in the presence of robbed-bit signaling based on proximity
US6754258B1 (en) 1999-10-29 2004-06-22 International Business Machines Corporation Systems, methods and computer program products for averaging learned levels in the presence of digital impairments based on patterns
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US6650657B1 (en) 1999-10-29 2003-11-18 International Business Machines Corporation Systems, methods and computer program products for identifying digital impairments in modem signals
US6967995B1 (en) 1999-10-29 2005-11-22 International Business Machines Corporation Methods, systems and computer program products for carrier drop detection using a variable threshold
JP4600709B2 (ja) * 2000-11-30 2010-12-15 ソニー株式会社 ネットワーク管理装置、ネットワーク管理方法、情報処理装置、情報処理方法、および記録媒体
JP4900998B2 (ja) 2000-11-30 2012-03-21 ソニー株式会社 情報処理装置および方法、並びに記録媒体
US7248901B2 (en) 2001-01-18 2007-07-24 Andreas Peiker Arrangement for handling a communication device
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US7383432B1 (en) * 2001-07-09 2008-06-03 Advanced Micro Devices, Inc. Software modem with hidden authentication commands
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Also Published As

Publication number Publication date
US4868863A (en) 1989-09-19
JPH0561830B2 (de) 1993-09-07
EP0309627B1 (de) 1993-06-16
JPH0194757A (ja) 1989-04-13
EP0309627A1 (de) 1989-04-05
DE3786266T2 (de) 1993-12-02

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Legal Events

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8364 No opposition during term of opposition