GB2012526B - Digital transmission substitution systems - Google Patents

Digital transmission substitution systems

Info

Publication number
GB2012526B
GB2012526B GB7846438A GB7846438A GB2012526B GB 2012526 B GB2012526 B GB 2012526B GB 7846438 A GB7846438 A GB 7846438A GB 7846438 A GB7846438 A GB 7846438A GB 2012526 B GB2012526 B GB 2012526B
Authority
GB
United Kingdom
Prior art keywords
digital transmission
substitution systems
transmission substitution
systems
digital
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
Application number
GB7846438A
Other versions
GB2012526A (en
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of GB2012526A publication Critical patent/GB2012526A/en
Application granted granted Critical
Publication of GB2012526B publication Critical patent/GB2012526B/en
Expired legal-status Critical Current

Links

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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
  • Maintenance And Management Of Digital Transmission (AREA)
  • Time-Division Multiplex Systems (AREA)
GB7846438A 1977-11-30 1978-11-29 Digital transmission substitution systems Expired GB2012526B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2753420A DE2753420C3 (en) 1977-11-30 1977-11-30 Device for equivalent switching of operating systems for digital signals

Publications (2)

Publication Number Publication Date
GB2012526A GB2012526A (en) 1979-07-25
GB2012526B true GB2012526B (en) 1982-03-10

Family

ID=6025003

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7846438A Expired GB2012526B (en) 1977-11-30 1978-11-29 Digital transmission substitution systems

Country Status (6)

Country Link
JP (1) JPS584503B2 (en)
DE (1) DE2753420C3 (en)
FR (1) FR2410918A1 (en)
GB (1) GB2012526B (en)
IT (1) IT1100376B (en)
NL (1) NL183377C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6493117B1 (en) 1997-08-27 2002-12-10 Nortel Networks Limited WDM optical network with passive pass-through at each node

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5484403A (en) * 1977-12-19 1979-07-05 Hitachi Ltd Double system transmission line switching system
DE2939253A1 (en) * 1979-09-27 1981-04-30 Siemens AG, 1000 Berlin und 8000 München Multiple redundant data transmission system - uses test signal to control change-over of transmission lines if line failure occurs
DE3330683A1 (en) * 1983-08-25 1985-03-14 Siemens AG, 1000 Berlin und 8000 München TRANSMISSION SYSTEM FOR DIGITAL SIGNALS, HIGH STEP-SPEED WITH ADDITIONAL SIGNAL TRANSMISSION
US4680776A (en) * 1983-11-11 1987-07-14 Fujitsu Limited Protection switching system for carrier transmission line
DE3526020A1 (en) * 1985-07-20 1987-01-22 Philips Patentverwaltung DEVICES FOR GENERATING THE IDENTIFICATION OF UNSWITCHED TRANSMISSION ROUTES OF A DIGITAL TRANSMISSION SYSTEM
US4646286A (en) * 1985-07-30 1987-02-24 Northern Telecom Limited Communications system with protection switching and channel identities
DE3642141A1 (en) * 1986-12-10 1988-06-16 Philips Patentverwaltung METHOD FOR DECENTRALIZED POWER SUPPLY CIRCUIT
GB8912090D0 (en) * 1989-05-25 1989-07-12 Bicc Plc Data networks
JP3115676B2 (en) * 1992-02-12 2000-12-11 富士通株式会社 Apparatus and method for automatically switching signal system of subscriber digital transmission apparatus
GB2267415B (en) * 1992-05-19 1996-02-07 Sony Broadcast & Communication Signal switching
US5712603A (en) * 1996-08-09 1998-01-27 Kmw Usa, Inc. Multipole multiposition microwave switch with a common redundancy
GB2345422A (en) * 1998-12-31 2000-07-05 Inventec Corp Method for data serial transfer

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6493117B1 (en) 1997-08-27 2002-12-10 Nortel Networks Limited WDM optical network with passive pass-through at each node
US6529300B1 (en) 1997-08-27 2003-03-04 Nortel Networks Limited WDM optical network with passive pass-through at each node
US6556321B1 (en) 1997-08-27 2003-04-29 Nortel Networks Limited WDM optical network and switching node with pilot tone communications
US6563615B2 (en) 1997-08-27 2003-05-13 Nortel Networks Limited Technique for detecting noise on a data channel
US6631018B1 (en) 1997-08-27 2003-10-07 Nortel Networks Limited WDM optical network with passive pass-through at each node

Also Published As

Publication number Publication date
FR2410918A1 (en) 1979-06-29
GB2012526A (en) 1979-07-25
DE2753420C3 (en) 1980-06-19
NL183377B (en) 1988-05-02
FR2410918B1 (en) 1984-01-20
JPS584503B2 (en) 1983-01-26
JPS54100208A (en) 1979-08-07
IT1100376B (en) 1985-09-28
DE2753420B2 (en) 1979-10-04
IT7830132A0 (en) 1978-11-24
NL183377C (en) 1988-10-03
NL7811771A (en) 1979-06-01
DE2753420A1 (en) 1979-06-07

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19931129