GB2217944B - Optical repeater supervisory system - Google Patents

Optical repeater supervisory system

Info

Publication number
GB2217944B
GB2217944B GB8907793A GB8907793A GB2217944B GB 2217944 B GB2217944 B GB 2217944B GB 8907793 A GB8907793 A GB 8907793A GB 8907793 A GB8907793 A GB 8907793A GB 2217944 B GB2217944 B GB 2217944B
Authority
GB
United Kingdom
Prior art keywords
supervisory system
optical repeater
repeater supervisory
optical
supervisory
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
GB8907793A
Other versions
GB8907793D0 (en
GB2217944A (en
Inventor
Shu Yamamoto
Hiroharu Wakabayashi
Tetsuya Miyazaki
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.)
KDDI Corp
Original Assignee
Kokusai Denshin Denwa KK
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 Kokusai Denshin Denwa KK filed Critical Kokusai Denshin Denwa KK
Publication of GB8907793D0 publication Critical patent/GB8907793D0/en
Publication of GB2217944A publication Critical patent/GB2217944A/en
Application granted granted Critical
Publication of GB2217944B publication Critical patent/GB2217944B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0061—Error detection codes
    • H04L1/0063—Single parity check
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/40—Monitoring; Testing of relay systems
    • H04B17/401—Monitoring; Testing of relay systems with selective localization
    • H04B17/402—Monitoring; Testing of relay systems with selective localization using different frequencies
    • H04B17/404—Monitoring; Testing of relay systems with selective localization using different frequencies selected by local filters

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Optical Communication System (AREA)
  • Dc Digital Transmission (AREA)
GB8907793A 1988-04-08 1989-04-06 Optical repeater supervisory system Expired - Lifetime GB2217944B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63085238A JPH01258531A (en) 1988-04-08 1988-04-08 Optical repeater supervising system

Publications (3)

Publication Number Publication Date
GB8907793D0 GB8907793D0 (en) 1989-05-17
GB2217944A GB2217944A (en) 1989-11-01
GB2217944B true GB2217944B (en) 1992-03-25

Family

ID=13852980

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8907793A Expired - Lifetime GB2217944B (en) 1988-04-08 1989-04-06 Optical repeater supervisory system

Country Status (2)

Country Link
JP (1) JPH01258531A (en)
GB (1) GB2217944B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2263849B (en) * 1992-01-31 1995-02-15 Northern Telecom Ltd Error detection
FR2688109B1 (en) * 1992-02-28 1994-12-30 Cit Alcatel SYSTEM FOR TRANSMITTING DIGITAL INFORMATION ON AN OPTICAL LINK WITH REPEATERS WITH OPTICAL AMPLIFIERS.
US5862160A (en) * 1996-12-31 1999-01-19 Ericsson, Inc. Secondary channel for communication networks
GB9806283D0 (en) * 1998-03-24 1998-05-20 British Telecomm Parity determining apparatus

Also Published As

Publication number Publication date
GB8907793D0 (en) 1989-05-17
JPH01258531A (en) 1989-10-16
GB2217944A (en) 1989-11-01

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Legal Events

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

Effective date: 19990406