GB1442551A - Installation for checking a transmission route having several lines - Google Patents

Installation for checking a transmission route having several lines

Info

Publication number
GB1442551A
GB1442551A GB4250074A GB4250074A GB1442551A GB 1442551 A GB1442551 A GB 1442551A GB 4250074 A GB4250074 A GB 4250074A GB 4250074 A GB4250074 A GB 4250074A GB 1442551 A GB1442551 A GB 1442551A
Authority
GB
United Kingdom
Prior art keywords
checking
installation
transmission route
several lines
lines
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
GB4250074A
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.)
Alcatel CIT SA
Nokia Inc
Original Assignee
Compagnie Industrielle de Telecommunication CIT Alcatel SA
Nokia 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 Compagnie Industrielle de Telecommunication CIT Alcatel SA, Nokia Inc filed Critical Compagnie Industrielle de Telecommunication CIT Alcatel SA
Publication of GB1442551A publication Critical patent/GB1442551A/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
    • H04B17/407—Monitoring; Testing of relay systems without selective localization
    • H04B17/408—Monitoring; Testing of relay systems without selective localization using successive loop-backs

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Amplifiers (AREA)
GB4250074A 1973-10-04 1974-10-01 Installation for checking a transmission route having several lines Expired GB1442551A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7335506A FR2258061B1 (https=) 1973-10-04 1973-10-04

Publications (1)

Publication Number Publication Date
GB1442551A true GB1442551A (en) 1976-07-14

Family

ID=9125920

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4250074A Expired GB1442551A (en) 1973-10-04 1974-10-01 Installation for checking a transmission route having several lines

Country Status (9)

Country Link
US (1) US3959606A (https=)
BE (1) BE820194A (https=)
DE (1) DE2447056A1 (https=)
DK (1) DK142188B (https=)
FR (1) FR2258061B1 (https=)
GB (1) GB1442551A (https=)
IT (1) IT1030631B (https=)
NL (1) NL7413158A (https=)
SE (1) SE393501B (https=)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2444983A1 (fr) * 1978-12-22 1980-07-18 Fillot Jean Jacques Systeme de surveillance et de regulation d'une liaison de transmission
US4393491A (en) * 1980-11-05 1983-07-12 Anaconda-Ericsson Automatic self-test system for a digital multiplexed telecommunication system
US4582964A (en) * 1984-06-25 1986-04-15 James A. Mayberry Remote loop-around carrier test system
US4763329A (en) * 1986-02-10 1988-08-09 Techlan, Inc. Modular data routing system
US5138634A (en) * 1990-02-26 1992-08-11 Knapp Stephen L Altered-length messages in interrupted-clock transmission systems

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3519935A (en) * 1966-06-21 1970-07-07 Bell Telephone Labor Inc Arrangement for providing partial service on a failed serially looped carrier system
US3458661A (en) * 1966-06-21 1969-07-29 Bell Telephone Labor Inc Arrangement for providing partial service on a failed serially looped carrier system
FR2060989A5 (https=) * 1969-12-24 1971-06-18 Sits Soc It Telecom Siemens
GB1270737A (en) * 1970-08-06 1972-04-12 Cit Alcatel Repeater monitoring device

Also Published As

Publication number Publication date
DK142188B (da) 1980-09-15
NL7413158A (nl) 1975-04-08
US3959606A (en) 1976-05-25
BE820194A (fr) 1975-03-24
DK142188C (https=) 1981-02-16
FR2258061A1 (https=) 1975-08-08
DE2447056A1 (de) 1975-04-10
DK521374A (https=) 1975-06-02
SE393501B (sv) 1977-05-09
FR2258061B1 (https=) 1978-09-29
SE7412463L (https=) 1975-04-07
IT1030631B (it) 1979-04-10

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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