DE69328145D1 - Verfahren zur Erkennung der Ausschaltung einer Übertragungsleitung - Google Patents

Verfahren zur Erkennung der Ausschaltung einer Übertragungsleitung

Info

Publication number
DE69328145D1
DE69328145D1 DE69328145T DE69328145T DE69328145D1 DE 69328145 D1 DE69328145 D1 DE 69328145D1 DE 69328145 T DE69328145 T DE 69328145T DE 69328145 T DE69328145 T DE 69328145T DE 69328145 D1 DE69328145 D1 DE 69328145D1
Authority
DE
Germany
Prior art keywords
disconnection
detecting
transmission line
transmission
line
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 - Fee Related
Application number
DE69328145T
Other languages
English (en)
Other versions
DE69328145T2 (de
Inventor
Takashi Kaku
Toyomi Obikawa
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Publication of DE69328145D1 publication Critical patent/DE69328145D1/de
Application granted granted Critical
Publication of DE69328145T2 publication Critical patent/DE69328145T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0262—Arrangements for detecting the data rate of an incoming signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/20—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other
    • H04B3/23—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other using a replica of transmitted signal in the time domain, e.g. echo cancellers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/22—Arrangements for detecting or preventing errors in the information received using redundant apparatus to increase reliability
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/06—Dc level restoring means; Bias distortion correction ; Decision circuits providing symbol by symbol detection
    • H04L25/068—Dc level restoring means; Bias distortion correction ; Decision circuits providing symbol by symbol detection by sampling faster than the nominal bit rate
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/14—Two-way operation using the same type of signal, i.e. duplex
    • H04L5/143—Two-way operation using the same type of signal, i.e. duplex for modulated signals
DE69328145T 1992-08-12 1993-07-09 Verfahren zur Erkennung der Ausschaltung einer Übertragungsleitung Expired - Fee Related DE69328145T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4215172A JP2763990B2 (ja) 1992-08-12 1992-08-12 ２線式全二重モデム

Publications (2)

Publication Number Publication Date
DE69328145D1 true DE69328145D1 (de) 2000-04-27
DE69328145T2 DE69328145T2 (de) 2000-07-20

Family

ID=16667856

Family Applications (2)

Application Number Title Priority Date Filing Date
DE69328145T Expired - Fee Related DE69328145T2 (de) 1992-08-12 1993-07-09 Verfahren zur Erkennung der Ausschaltung einer Übertragungsleitung
DE69333835T Expired - Fee Related DE69333835T2 (de) 1992-08-12 1993-07-09 Scrambler in einem Vollduplexmodem

Family Applications After (1)

Application Number Title Priority Date Filing Date
DE69333835T Expired - Fee Related DE69333835T2 (de) 1992-08-12 1993-07-09 Scrambler in einem Vollduplexmodem

Country Status (4)

Country Link
US (1) US5631923A (de)
EP (2) EP0874493B1 (de)
JP (1) JP2763990B2 (de)
DE (2) DE69328145T2 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5991278A (en) 1996-08-13 1999-11-23 Telogy Networks, Inc. Asymmetric modem communications system and method
US6014371A (en) * 1997-03-05 2000-01-11 Paradyne Corporation Echo cancellation system and method for multipoint networks
US6392587B1 (en) * 1997-06-16 2002-05-21 Dfs Deutsche Flugsicherung Gmbh Method for monitoring data flows, specially to provide radar data for air traffic control systems, and device to implement said method
CN1301292C (zh) * 2001-08-17 2007-02-21 陶氏环球技术公司 双峰聚乙烯组合物及其制品和该组合物的应用
US6975717B1 (en) * 2003-03-13 2005-12-13 Vulcan Research LLC Selective processing of calls using alternative network telephony
US6980638B1 (en) * 2003-03-13 2005-12-27 Vulcan Research LLC Failsafe configuration for alternative network telephony

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4241311A (en) * 1979-02-01 1980-12-23 Telex Computer Products, Inc. Digital majority noise filter for bi-level data reception
FR2448258A1 (fr) * 1979-02-05 1980-08-29 Trt Telecom Radio Electr Systeme de test d'un dispositif muni d'un annuleur d'echo
JPH0616592B2 (ja) * 1985-12-23 1994-03-02 富士通株式会社 Ｆｄｍモデム
FR2650141B1 (fr) * 1989-07-21 1995-09-29 Trt Telecom Radio Electr Procede pour gerer une liaison entre deux modems et modem permettant la mise en oeuvre de ce procede
US5001374A (en) * 1989-09-08 1991-03-19 Amp Incorporated Digital filter for removing short duration noise
FR2661298B1 (fr) * 1990-04-23 1992-06-12 Cit Alcatel Procede et dispositif de retour a une liaison normale apres utilisation d'une liaison de secours dans un systeme de transmission de donnees.
US5166975A (en) * 1990-08-09 1992-11-24 Fuji Xerox Co., Ltd. Communication terminal equipment
US5214637A (en) * 1991-04-15 1993-05-25 Codex Corporation High speed two wire modem

Also Published As

Publication number Publication date
DE69333835D1 (de) 2005-07-28
DE69333835T2 (de) 2005-12-01
EP0874493B1 (de) 2005-06-22
EP0584918B1 (de) 2000-03-22
EP0874493A2 (de) 1998-10-28
EP0874493A3 (de) 2000-05-03
DE69328145T2 (de) 2000-07-20
JPH0662058A (ja) 1994-03-04
EP0584918A1 (de) 1994-03-02
JP2763990B2 (ja) 1998-06-11
US5631923A (en) 1997-05-20

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee