CA1092653A - Method and apparatus for measuring telephone line - Google Patents

Method and apparatus for measuring telephone line

Info

Publication number: CA1092653A
Authority: CA; Canada
Prior art keywords: ground; tip; ring; spurious; line
Prior art date: 1978-09-21
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)

French (fr)

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.)

1978-09-21

Filing date

1978-09-21

Publication date

1980-12-30

1978-09-21 Application filed by Northern Telecom Ltd filed Critical Northern Telecom Ltd

1978-09-21 Priority to CA311,757A priority Critical patent/CA1092653A/en

1979-08-31 Priority to GB7930339A priority patent/GB2031248B/en

1979-09-06 Priority to NL7906671A priority patent/NL7906671A/nl

1979-09-11 Priority to DE19792936722 priority patent/DE2936722A1/de

1979-09-14 Priority to AT0606579A priority patent/AT384698B/de

1979-09-19 Priority to SE7907752A priority patent/SE435775B/sv

1979-09-19 Priority to JP11945979A priority patent/JPS5542495A/ja

1979-09-20 Priority to FR7923477A priority patent/FR2436999A1/fr

1980-12-30 Application granted granted Critical

1980-12-30 Publication of CA1092653A publication Critical patent/CA1092653A/en

Status Expired legal-status Critical Current

Links

238000000034 method Methods 0.000 title claims abstract description 7
238000005259 measurement Methods 0.000 claims abstract description 31
238000004364 calculation method Methods 0.000 claims abstract description 6
230000001052 transient effect Effects 0.000 claims description 23
238000012360 testing method Methods 0.000 claims description 16
238000009795 derivation Methods 0.000 abstract 1
239000003990 capacitor Substances 0.000 description 5
238000012544 monitoring process Methods 0.000 description 2
230000001360 synchronised effect Effects 0.000 description 2
238000012937 correction Methods 0.000 description 1
238000010586 diagram Methods 0.000 description 1
230000000694 effects Effects 0.000 description 1
230000010354 integration Effects 0.000 description 1
230000000737 periodic effect Effects 0.000 description 1
230000008707 rearrangement Effects 0.000 description 1
238000012546 transfer Methods 0.000 description 1

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 Method and apparatus for measuring telephone line Expired CA1092653A (en)

Priority Applications (8)

Application Number	Priority Date	Filing Date	Title
CA311,757A CA1092653A (en)	1978-09-21	1978-09-21	Method and apparatus for measuring telephone line
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 (en)	1978-09-21	1978-09-21	Method and apparatus for measuring telephone line

Publications (1)

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

Family

ID=4112404

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA311,757A Expired CA1092653A (en)	1978-09-21	1978-09-21	Method and apparatus for measuring telephone line

Country Status (8)

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

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

1978
- 1978-09-21 CA CA311,757A patent/CA1092653A/en not_active Expired
1979
- 1979-08-31 GB GB7930339A patent/GB2031248B/en not_active Expired
- 1979-09-06 NL NL7906671A patent/NL7906671A/nl not_active Application Discontinuation
- 1979-09-11 DE DE19792936722 patent/DE2936722A1/de not_active Withdrawn
- 1979-09-14 AT AT0606579A patent/AT384698B/de not_active IP Right Cessation
- 1979-09-19 SE SE7907752A patent/SE435775B/sv not_active IP Right Cessation
- 1979-09-19 JP JP11945979A patent/JPS5542495A/ja active Granted
- 1979-09-20 FR FR7923477A patent/FR2436999A1/fr active Granted

Also Published As

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

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Legal Events

Date	Code	Title	Description
1997-12-30	MKEX	Expiry