CA2083635A1 - Commutation de protection pour materiel de transmission de signaux numeriques - Google Patents

Commutation de protection pour materiel de transmission de signaux numeriques

Info

Publication number
CA2083635A1
CA2083635A1 CA2083635A CA2083635A CA2083635A1 CA 2083635 A1 CA2083635 A1 CA 2083635A1 CA 2083635 A CA2083635 A CA 2083635A CA 2083635 A CA2083635 A CA 2083635A CA 2083635 A1 CA2083635 A1 CA 2083635A1
Authority
CA
Canada
Prior art keywords
digital signal
hardware switching
switching unit
hardware
active
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.)
Granted
Application number
CA2083635A
Other languages
English (en)
Other versions
CA2083635C (fr
Inventor
Stephen Ka-Yee Eng
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.)
AT&T Corp
Original Assignee
American Telephone and Telegraph Co 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 American Telephone and Telegraph Co Inc filed Critical American Telephone and Telegraph Co Inc
Publication of CA2083635A1 publication Critical patent/CA2083635A1/fr
Application granted granted Critical
Publication of CA2083635C publication Critical patent/CA2083635C/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/06—Synchronising arrangements
    • H04J3/0635—Clock or time synchronisation in a network
    • H04J3/0685—Clock or time synchronisation in a node; Intranode synchronisation
    • H04J3/0688—Change of the master or reference, e.g. take-over or failure of the master
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/74—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for increasing reliability, e.g. using redundant or spare channels or apparatus
    • 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
CA002083635A 1992-01-24 1992-11-24 Commutation de protection pour materiel de transmission de signaux numeriques Expired - Fee Related CA2083635C (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US825351 1992-01-24
US07/825,351 US5311551A (en) 1992-01-24 1992-01-24 Digital signal hardware protection switching

Publications (2)

Publication Number Publication Date
CA2083635A1 true CA2083635A1 (fr) 1993-07-25
CA2083635C CA2083635C (fr) 1999-01-12

Family

ID=25243795

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002083635A Expired - Fee Related CA2083635C (fr) 1992-01-24 1992-11-24 Commutation de protection pour materiel de transmission de signaux numeriques

Country Status (6)

Country Link
US (1) US5311551A (fr)
EP (1) EP0552889B1 (fr)
JP (1) JP2566106B2 (fr)
KR (1) KR0134082B1 (fr)
CA (1) CA2083635C (fr)
DE (1) DE69302405T2 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI93289C (fi) * 1993-03-16 1995-03-10 Nokia Telecommunications Oy Menetelmä ehdollisten kytkentöjen ohjaamiseksi synkronisessa digitaalisessa tietoliikennejärjestelmässä
JPH07264171A (ja) * 1994-03-16 1995-10-13 Fujitsu Ltd 冗長系伝送路運用システム及び冗長系伝送路運用方法
US6529599B1 (en) 1998-07-07 2003-03-04 Nec America, Inc. Flexible tributary unit protection method for a trunk-multiplexed metallic interface
US6690644B1 (en) 1999-02-17 2004-02-10 Zhone Technologies, Inc. Mechanism for 1:1, 1+1, and UPSR path-switched protection switching
US6449249B1 (en) * 2000-09-07 2002-09-10 Arris International, Inc. Spare circuit switching
JP4677693B2 (ja) * 2001-08-23 2011-04-27 ソニー株式会社 データ処理装置及びデータ処理方法
US7782765B2 (en) * 2007-01-22 2010-08-24 Harris Stratex Networks Operating Corporation Distributed protection switching architecture for point-to-point microwave radio systems
US9189310B2 (en) * 2013-08-14 2015-11-17 Unisys Corporation Automated monitoring of server control automation components

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4477895A (en) * 1980-05-02 1984-10-16 Harris Corporation Synchronized protection switching arrangement
US4417348A (en) * 1981-04-30 1983-11-22 Bell Telephone Laboratories, Incorporated Errorless line protection switcher
US4395772A (en) * 1981-04-30 1983-07-26 Bell Telephone Laboratories, Incorporated Line protection switch controller
US4635249A (en) * 1985-05-03 1987-01-06 At&T Information Systems Inc. Glitchless clock signal control circuit for a duplicated system
JPS62274946A (ja) * 1986-05-23 1987-11-28 Fujitsu Ltd 無瞬断切替回路
JPS62299135A (ja) * 1986-06-18 1987-12-26 Nec Corp 回線切替方式
JPS6370632A (ja) * 1986-09-11 1988-03-30 Nec Corp 回線切替方式
JP2689263B2 (ja) * 1988-08-20 1997-12-10 富士通株式会社 差動論理同期回路
JP2687596B2 (ja) * 1989-06-23 1997-12-08 富士通株式会社 バイポーラ信号の無瞬断切替回路

Also Published As

Publication number Publication date
CA2083635C (fr) 1999-01-12
DE69302405D1 (de) 1996-06-05
DE69302405T2 (de) 1996-09-12
JP2566106B2 (ja) 1996-12-25
KR930017349A (ko) 1993-08-30
EP0552889A1 (fr) 1993-07-28
JPH0685886A (ja) 1994-03-25
KR0134082B1 (ko) 1998-04-27
EP0552889B1 (fr) 1996-05-01
US5311551A (en) 1994-05-10

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed