CA1092653A - No translation available - Google Patents

No translation available

Info

Publication number
CA1092653A
CA1092653A CA311,757A CA311757A CA1092653A CA 1092653 A CA1092653 A CA 1092653A CA 311757 A CA311757 A CA 311757A CA 1092653 A CA1092653 A CA 1092653A
Authority
CA
Canada
Prior art keywords
ground
tip
ring
spurious
line
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
CA311,757A
Other languages
English (en)
Inventor
John C. Ellson
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.)
Nortel Networks Ltd
Original Assignee
Northern Telecom 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.)
Filing date
Publication date
Application filed by Northern Telecom Ltd filed Critical Northern Telecom Ltd
Priority to CA311,757A priority Critical patent/CA1092653A/fr
Priority to GB7930339A priority patent/GB2031248B/en
Priority to NL7906671A priority patent/NL7906671A/nl
Priority to DE19792936722 priority patent/DE2936722A1/de
Priority to AT0606579A priority patent/AT384698B/de
Priority to SE7907752A priority patent/SE435775B/sv
Priority to JP11945979A priority patent/JPS5542495A/ja
Priority to FR7923477A priority patent/FR2436999A1/fr
Application granted granted Critical
Publication of CA1092653A publication Critical patent/CA1092653A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/22—Arrangements for supervision, monitoring or testing
    • H04M3/26—Arrangements for supervision, monitoring or testing with means for applying test signals or for measuring
    • H04M3/28—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor
    • H04M3/30—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor for subscriber's lines, for the local loop

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
  • Measurement Of Resistance Or Impedance (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
CA311,757A 1978-09-21 1978-09-21 No translation available Expired CA1092653A (fr)

Priority Applications (8)

Application Number Priority Date Filing Date Title
CA311,757A CA1092653A (fr) 1978-09-21 1978-09-21 No translation available
GB7930339A GB2031248B (en) 1978-09-21 1979-08-31 Method and apparatus for measuring telephone line characteristics
NL7906671A NL7906671A (nl) 1978-09-21 1979-09-06 Inrichting voor het meten van een telefoonlijn.
DE19792936722 DE2936722A1 (de) 1978-09-21 1979-09-11 Verfahren und vorrichtung zur bestimmung von charakteristischen werten einer fernsprechleitung
AT0606579A AT384698B (de) 1978-09-21 1979-09-14 Messvorrichtung fuer eine fernsprechleitung
SE7907752A SE435775B (sv) 1978-09-21 1979-09-19 Testutrustning for telefonledningar
JP11945979A JPS5542495A (en) 1978-09-21 1979-09-19 Device for measuring telephone line characteristics
FR7923477A FR2436999A1 (fr) 1978-09-21 1979-09-20 Procede et dispositif de mesure des caracteristiques d'une ligne telephonique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA311,757A CA1092653A (fr) 1978-09-21 1978-09-21 No translation available

Publications (1)

Publication Number Publication Date
CA1092653A true CA1092653A (fr) 1980-12-30

Family

ID=4112404

Family Applications (1)

Application Number Title Priority Date Filing Date
CA311,757A Expired CA1092653A (fr) 1978-09-21 1978-09-21 No translation available

Country Status (8)

Country Link
JP (1) JPS5542495A (fr)
AT (1) AT384698B (fr)
CA (1) CA1092653A (fr)
DE (1) DE2936722A1 (fr)
FR (1) FR2436999A1 (fr)
GB (1) GB2031248B (fr)
NL (1) NL7906671A (fr)
SE (1) SE435775B (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0744604B2 (ja) * 1985-05-17 1995-05-15 日本電気株式会社 加入者線監視回路
GB2269073B (en) * 1992-07-23 1996-06-19 Northern Telecom Ltd Remote line tester
GB9613287D0 (en) * 1996-06-25 1996-08-28 Raychem Ltd Ground testing

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4028507A (en) * 1976-06-28 1977-06-07 Bell Telephone Laboratories, Incorporated Apparatus for applying particular voltages to three-terminal circuits and measuring resulting current flows for the purpose of determining circuit characteristics

Also Published As

Publication number Publication date
ATA606579A (de) 1987-05-15
AT384698B (de) 1987-12-28
GB2031248A (en) 1980-04-16
SE7907752L (sv) 1980-03-22
JPS6322111B2 (fr) 1988-05-10
FR2436999A1 (fr) 1980-04-18
GB2031248B (en) 1982-12-22
DE2936722A1 (de) 1980-04-10
JPS5542495A (en) 1980-03-25
FR2436999B1 (fr) 1983-07-01
NL7906671A (nl) 1980-03-25
SE435775B (sv) 1984-10-15

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