BR7307907D0 - Disposicao de comutacao de isolamento de circuito - Google Patents

Disposicao de comutacao de isolamento de circuito

Info

Publication number
BR7307907D0
BR7307907D0 BR7907/73A BR790773A BR7307907D0 BR 7307907 D0 BR7307907 D0 BR 7307907D0 BR 7907/73 A BR7907/73 A BR 7907/73A BR 790773 A BR790773 A BR 790773A BR 7307907 D0 BR7307907 D0 BR 7307907D0
Authority
BR
Brazil
Prior art keywords
circuit insulation
insulation switching
switching provision
provision
circuit
Prior art date
Application number
BR7907/73A
Other languages
English (en)
Inventor
I Wikholm
Original Assignee
I Wikholm
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 I Wikholm filed Critical I Wikholm
Publication of BR7307907D0 publication Critical patent/BR7307907D0/pt

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
    • H04M3/301—Circuit arrangements at the subscriber's side of the line
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/46—Monitoring; Testing
BR7907/73A 1972-10-12 1973-10-11 Disposicao de comutacao de isolamento de circuito BR7307907D0 (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US29698172A 1972-10-12 1972-10-12

Publications (1)

Publication Number Publication Date
BR7307907D0 true BR7307907D0 (pt) 1974-07-11

Family

ID=23144371

Family Applications (1)

Application Number Title Priority Date Filing Date
BR7907/73A BR7307907D0 (pt) 1972-10-12 1973-10-11 Disposicao de comutacao de isolamento de circuito

Country Status (6)

Country Link
US (1) US3766336A (pt)
JP (1) JPS4994203A (pt)
AU (1) AU6155373A (pt)
BR (1) BR7307907D0 (pt)
CA (1) CA980030A (pt)
FR (1) FR2203234B3 (pt)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3843848A (en) * 1973-01-12 1974-10-22 Magnetic Controls Co Telephone looptest system
US3852537A (en) * 1973-02-22 1974-12-03 San Bar Corp Telephone station disconnect device
US3867588A (en) * 1973-06-01 1975-02-18 Terra Corp Quick disconnect for telecommunication lines
US3889070A (en) * 1973-06-04 1975-06-10 Telephonic Equipment Company Tone detecting telephone connection monitor
US4041255A (en) * 1976-09-29 1977-08-09 Northern Telecom Limited Switching circuit for telecommunications lines
US4054759A (en) * 1976-11-15 1977-10-18 Northern Telecom Limited Subscriber loop verification device and method
US4169220A (en) * 1978-10-02 1979-09-25 Fields Gary C Telephone instrument connection block with remotely actuated line test
US4536617A (en) * 1983-08-01 1985-08-20 Keptel, Inc. Remotely-activated switching apparatus
US4558182A (en) * 1983-08-01 1985-12-10 Keptel, Inc. Remotely-activated switching apparatus
US4550225A (en) * 1983-10-31 1985-10-29 Keptel, Inc. AC Signal-activated switching apparatus
GB2149616B (en) * 1983-11-10 1987-10-07 Standard Telephones Cables Ltd Testing telephone lines

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3636280A (en) * 1970-09-17 1972-01-18 Gen Telephone Co Of California Telephone line testing from remote locations
US3725613A (en) * 1971-02-25 1973-04-03 Rochester Tel Corp Apparatus for protecting and testing telephone network

Also Published As

Publication number Publication date
AU6155373A (en) 1975-04-24
CA980030A (en) 1975-12-16
FR2203234A1 (pt) 1974-05-10
US3766336A (en) 1973-10-16
JPS4994203A (pt) 1974-09-06
FR2203234B3 (pt) 1976-09-03

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