DE3474893D1 - Protection switching system for carrier transmission line - Google Patents

Protection switching system for carrier transmission line

Info

Publication number: DE3474893D1
Authority: DE; Germany
Prior art keywords: transmission line; switching system; protection switching; carrier transmission; carrier
Prior art date: 1983-11-11
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

Application number

DE8484113522T

Other languages

English (en)

Inventor

Satoshi Ikeuchi

Ikuo Taniguchi

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.)

1983-11-11

Filing date

1984-11-09

Publication date

1988-12-01

1983-11-11 Priority claimed from JP58212030A external-priority patent/JPS60103836A/ja

1983-11-18 Priority claimed from JP21740283A external-priority patent/JPS60109932A/ja

1984-01-25 Priority claimed from JP1125684A external-priority patent/JPS60154720A/ja

1984-11-09 Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd

1988-12-01 Application granted granted Critical

1988-12-01 Publication of DE3474893D1 publication Critical patent/DE3474893D1/de

Status Expired legal-status Critical Current

Links

230000005540 biological transmission Effects 0.000 title 1

Classifications

- 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

DE8484113522T 1983-11-11 1984-11-09 Protection switching system for carrier transmission line Expired DE3474893D1 (en)

Applications Claiming Priority (3)

Application Number	Priority Date	Filing Date	Title
JP58212030A JPS60103836A (ja)	1983-11-11	1983-11-11	監視信号の多重化方式
JP21740283A JPS60109932A (ja)	1983-11-18	1983-11-18	回線切替方式
JP1125684A JPS60154720A (ja)	1984-01-25	1984-01-25	回線切替制御方式

Publications (1)

Publication Number	Publication Date
DE3474893D1 true DE3474893D1 (en)	1988-12-01

Family

ID=27279349

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
DE8484113522T Expired DE3474893D1 (en)	1983-11-11	1984-11-09	Protection switching system for carrier transmission line

Country Status (7)

Country	Link
US (1)	US4680776A (de)
EP (1)	EP0142138B1 (de)
AU (1)	AU551278B2 (de)
CA (1)	CA1247206A (de)
DE (1)	DE3474893D1 (de)
HK (1)	HK70890A (de)
SG (1)	SG9490G (de)

Families Citing this family (50)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS61137443A (ja) *	1984-12-07	1986-06-25	Toshiba Corp	ロ−カルエリアネツトワ−ク装置
US4646286A (en) *	1985-07-30	1987-02-24	Northern Telecom Limited	Communications system with protection switching and channel identities
US4837760A (en) *	1985-08-02	1989-06-06	Northern Telecom Limited	Communications system with protection switching using individual selectors
JPS6258744A (ja) *	1985-09-09	1987-03-14	Fujitsu Ltd	ポ−リング方式
US4644301A (en) *	1985-10-31	1987-02-17	Rca Corporation	Redundancy system and switching network
JPH0624345B2 (ja) *	1986-04-28	1994-03-30	日本電気株式会社	予備回線監視回路
JPS6370632A (ja) *	1986-09-11	1988-03-30	Nec Corp	回線切替方式
JPS63100843A (ja) *	1986-10-16	1988-05-02	Nippon Denso Co Ltd	通信制御機構
US4754454A (en) *	1986-11-17	1988-06-28	Gte Communication Systems Corporation	Synchronization circuitry for duplex digital span equipment
US5175639A (en) *	1986-11-21	1992-12-29	Hitachi, Ltd.	Optical subscriber network transmission system
DE3642378A1 (de) *	1986-12-11	1988-06-30	Siemens Ag	System zur uebertragung von informationen mit ersatzschalteinrichtungen
US5029158A (en) *	1987-07-23	1991-07-02	Northern Telecom Limited	Protection switching in a multi-channel communications system
JPS6460026A (en) *	1987-08-31	1989-03-07	Fujitsu Ltd	Transmission line switching device for communication equipment
CN1012411B (zh) *	1987-11-10	1991-04-17	日本电气株式会社	信道转换系统
US5010550A (en) *	1988-02-04	1991-04-23	Nec Corporation	Transmission line switching system
JPH01284035A (ja) *	1988-05-10	1989-11-15	Toshiba Corp	データ伝送装置
JPH0227819A (ja) *	1988-07-18	1990-01-30	Fujitsu Ltd	回線切替装置における切替トリガ検出回路
US5193086A (en) *	1988-08-26	1993-03-09	Hitachi, Ltd.	Network system having a line switching function
JPH0279542A (ja) *	1988-09-14	1990-03-20	Fujitsu Ltd	副信号伝送方式
JP2591128B2 (ja) *	1988-12-20	1997-03-19	日本電気株式会社	通信回線切替方式
US5313456A (en) *	1989-03-03	1994-05-17	Fujitsu Limited	Data link protecting system
CA2012388C (en) *	1989-03-20	1995-02-21	Toshio Nakajima	Digital radio transmission system
US5263017A (en) *	1989-03-20	1993-11-16	Fujitsu Limited	Digital radio transmission system
JPH02266729A (ja) *	1989-04-07	1990-10-31	Mitsubishi Electric Corp	二重ループ通信システムにおける通信制御方式
US5027342A (en) *	1989-05-03	1991-06-25	The University Of Toronto Innovations Foundation	Local area network
JPH0396054A (ja) *	1989-09-08	1991-04-22	Hitachi Ltd	Ｉｓｄｎ網経由による共通線信号網構成方法および共通線信号路迂回方法
JPH0799816B2 (ja) *	1990-01-10	1995-10-25	富士通株式会社	保護線の切替制御方式
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.
CA2054443C (en) *	1990-10-30	1995-11-07	Kazuo Yamane	Switching system of optical transmission lines for protecting from trouble
US5182744A (en) *	1991-01-03	1993-01-26	At&T Bell Laboratories	Telecommunications network restoration architecture
US5235630A (en) *	1991-04-17	1993-08-10	Telident, Incorporated	Emergency call station identification system and method
JP3268460B2 (ja) *	1991-07-30	2002-03-25	株式会社日立製作所	伝送路切替制御方法およびその装置
JPH0541764A (ja) *	1991-08-06	1993-02-19	Hitachi Ltd	電子フアイル装置によるデータ転送方法
JP3181963B2 (ja) *	1992-02-17	2001-07-03	富士通株式会社	伝送端局装置
JPH05292040A (ja)	1992-04-08	1993-11-05	Hitachi Ltd	光伝送システムの構築方法
US6005699A (en) *	1992-04-08	1999-12-21	Hitachi, Ltd.	Optical wavelength multiplexing system
US5555477A (en) *	1992-04-08	1996-09-10	Hitachi, Ltd.	Optical transmission system constructing method and system
US5365510A (en) *	1992-04-09	1994-11-15	Northern Telecom Limited	Communications system with a single protection loop
JP2606072B2 (ja) *	1993-05-11	1997-04-30	日本電気株式会社	呼制御方法
US5528599A (en) *	1993-08-30	1996-06-18	Motorola, Inc.	Method and apparatus of combining signals in a digital pipelined signal adder
JPH0786988A (ja) *	1993-09-16	1995-03-31	Fujitsu Ltd	Ｐｃａ伝送装置及びｐｃａ伝送方法
JPH07264156A (ja) *	1994-03-18	1995-10-13	Fujitsu Ltd	同期通信網の障害検出方式
US5787070A (en) *	1995-06-21	1998-07-28	Cisco Technology, Inc.	One for N redundancy in a communication system
JPH0998181A (ja) *	1995-09-29	1997-04-08	Fujitsu Ltd	伝送装置
KR100301575B1 (ko) *	1995-12-22	2001-11-22	박종섭	신호 전송장치
JPH10173657A (ja) *	1996-12-13	1998-06-26	Fujitsu Ltd	伝送装置
JPH1127181A (ja) *	1997-06-30	1999-01-29	Nec Corp	予備回線への切替方式
JPH11205324A (ja) *	1998-01-12	1999-07-30	Fujitsu Ltd	Ａｔｍ網における回線バックアップシステム
US6925054B1 (en) *	1998-12-07	2005-08-02	Nortel Networks Limited	Network path protection
JP2008061091A (ja) *	2006-09-01	2008-03-13	Hitachi Communication Technologies Ltd	パス設定方法およびノード装置

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3111624A (en) *	1960-01-04	1963-11-19	Bell Telephone Labor Inc	Automatic system for selectively substituting spare channels for failed working channels in a multichannel multilink communication system
BE731482A (de) *	1968-05-15	1969-09-15
DE2360929C2 (de) *	1973-12-06	1975-07-17	Siemens Ag, 1000 Berlin Und 8000 Muenchen	Schaltungsanordnung zur Auswahl eines Diversitykanals über den Daten in Form von Bits übertragen werden
US3983340A (en) *	1975-01-27	1976-09-28	Lynch Communication Systems, Inc.	Automatic span line switch
DE2525438C3 (de) *	1975-06-07	1980-08-07	Telefonbau Und Normalzeit Gmbh, 6000 Frankfurt	Überwachungsanordnung zur Überwachung zentraler Einrichtungen
US4071700A (en) *	1976-11-18	1978-01-31	Rockwell International Corporation	Testing apparatus
DE2753420C3 (de) *	1977-11-30	1980-06-19	Siemens Ag, 1000 Berlin Und 8000 Muenchen	Einrichtung zur Ersatzschaltung von Betriebssystemen für digitale Signale
FR2473819B1 (fr) *	1980-01-11	1985-12-13	Telecommunications Sa	Procede et systeme de securisation d'une artere de transmission numerique
JPS56153859A (en) *	1980-04-28	1981-11-28	Nec Corp	Pcm line switching device

1984
- 1984-11-09 EP EP84113522A patent/EP0142138B1/de not_active Expired
- 1984-11-09 US US06/669,836 patent/US4680776A/en not_active Expired - Lifetime
- 1984-11-09 CA CA000467452A patent/CA1247206A/en not_active Expired
- 1984-11-09 DE DE8484113522T patent/DE3474893D1/de not_active Expired
- 1984-11-12 AU AU35311/84A patent/AU551278B2/en not_active Ceased
1990
- 1990-02-13 SG SG94/90A patent/SG9490G/en unknown
- 1990-09-06 HK HK708/90A patent/HK70890A/xx unknown

Also Published As

Publication number	Publication date
EP0142138A2 (de)	1985-05-22
CA1247206A (en)	1988-12-20
AU551278B2 (en)	1986-04-24
EP0142138A3 (en)	1986-03-05
US4680776A (en)	1987-07-14
EP0142138B1 (de)	1988-10-26
SG9490G (en)	1990-08-31
HK70890A (en)	1990-09-14
AU3531184A (en)	1985-05-16

Legal Events

Date	Code	Title	Description
1989-11-16	8364	No opposition during term of opposition
1994-11-10	8339	Ceased/non-payment of the annual fee

Publication	Publication Date	Title
DE3474893D1 (en)	1988-12-01	Protection switching system for carrier transmission line
GB2121656B (en)	1986-08-20	Communications system
GB2149626B (en)	1988-02-17	Communications system
GB8302255D0 (en)	1983-03-02	Communications systems
GB8325280D0 (en)	1983-10-26	Communications systems
GB8404201D0 (en)	1984-03-21	Switching system
GB8420697D0 (en)	1984-09-19	Multiple communication system
GB8332237D0 (en)	1984-01-11	Transmission system
GB8411763D0 (en)	1984-06-13	Switching system
EP0133261A3 (en)	1987-05-20	Carrier relay system
IL70153A0 (en)	1984-02-29	Audiotactile communication system
GB2145609B (en)	1986-07-23	Line transmission systems
GB2259226B (en)	1993-08-04	Communications systems
DE3380339D1 (en)	1989-09-07	Communications system
GB2145608B (en)	1986-11-26	Multiplex transmission systems
IL69580A (en)	1987-07-31	Communication switching systems
GB2164229B (en)	1986-08-20	Communications system
DE3360364D1 (en)	1985-08-14	Line transmission systems
EP0136724A3 (en)	1987-12-23	Multiplex transmission system
GB8317599D0 (en)	1983-08-03	Communications systems
DE3461239D1 (en)	1986-12-11	Time division switching system
GB8310370D0 (en)	1983-05-18	Safety switching system
ZA83894B (en)	1983-11-30	Line transmission systems
GB2139045B (en)	1986-05-29	Transmission systems
GB8306725D0 (en)	1983-04-20	Communications systems