GB1358910A - Transmission systems and methods of festing the same - Google Patents

Transmission systems and methods of festing the same

Info

Publication number
GB1358910A
GB1358910A GB5131371A GB5131371A GB1358910A GB 1358910 A GB1358910 A GB 1358910A GB 5131371 A GB5131371 A GB 5131371A GB 5131371 A GB5131371 A GB 5131371A GB 1358910 A GB1358910 A GB 1358910A
Authority
GB
United Kingdom
Prior art keywords
repeaters
amplifiers
line
test
feed
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
GB5131371A
Other languages
English (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.)
AT&T Corp
Original Assignee
Western Electric 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 Western Electric Co Inc filed Critical Western Electric Co Inc
Publication of GB1358910A publication Critical patent/GB1358910A/en
Expired legal-status Critical Current

Links

Classifications

    • 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

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)
GB5131371A 1970-11-10 1971-11-04 Transmission systems and methods of festing the same Expired GB1358910A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US8829770A 1970-11-10 1970-11-10

Publications (1)

Publication Number Publication Date
GB1358910A true GB1358910A (en) 1974-07-03

Family

ID=22210555

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5131371A Expired GB1358910A (en) 1970-11-10 1971-11-04 Transmission systems and methods of festing the same

Country Status (7)

Country Link
US (1) US3651284A (OSRAM)
JP (1) JPS5124325B1 (OSRAM)
BE (1) BE775050A (OSRAM)
DE (1) DE2155610B2 (OSRAM)
FR (1) FR2113880B1 (OSRAM)
GB (1) GB1358910A (OSRAM)
SE (1) SE369462B (OSRAM)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1369062A (en) * 1971-01-29 1974-10-02 Sits Soc It Telecom Siemens Fault location system for use in the location of faults in both a pcm link between two terminal stations
US3864528A (en) * 1973-08-22 1975-02-04 Bell Northern Research Ltd Fault locating system for a digital transmission system
US3909563A (en) * 1973-11-06 1975-09-30 Wescom Procedure and apparatus for locating faults in digital repeatered lines
DE2436373C3 (de) * 1974-07-27 1983-02-24 TE KA DE Felten & Guilleaume Fernmeldeanlagen GmbH, 8500 Nürnberg Fehlerortungsverfahren für Vierdraht-Trägerfrequenzsysteme
US3917916A (en) * 1974-08-29 1975-11-04 Wescom Method and means for interrogation of digital repeatered lines
JPH0632517B2 (ja) * 1985-07-19 1994-04-27 ホーチキ株式会社 異常監視装置
US5323145A (en) * 1992-03-02 1994-06-21 Alcatel Network Systems, Inc. Alarm collection architecture with redundant bus
KR0143113B1 (ko) * 1995-08-18 1998-08-01 김광호 중계 전송로에서 급전 불 평형 감지회로

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2315434A (en) * 1940-07-03 1943-03-30 Bell Telephone Labor Inc Transmission system

Also Published As

Publication number Publication date
DE2155610B2 (de) 1973-10-25
SE369462B (OSRAM) 1974-08-26
FR2113880B1 (OSRAM) 1976-12-03
FR2113880A1 (OSRAM) 1972-06-30
US3651284A (en) 1972-03-21
BE775050A (fr) 1972-03-01
JPS5124325B1 (OSRAM) 1976-07-23
DE2155610A1 (de) 1972-05-18

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee