FR1440329A - Improvements to communication systems - Google Patents

Improvements to communication systems

Info

Publication number
FR1440329A
FR1440329A FR22308A FR22308A FR1440329A FR 1440329 A FR1440329 A FR 1440329A FR 22308 A FR22308 A FR 22308A FR 22308 A FR22308 A FR 22308A FR 1440329 A FR1440329 A FR 1440329A
Authority
FR
France
Prior art keywords
communication systems
systems
communication
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
FR22308A
Other languages
French (fr)
Inventor
Roger Maurice Hochreutiner
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.)
International Standard Electric Corp
Original Assignee
International Standard Electric Corp
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
Priority claimed from GB26502/64A external-priority patent/GB998760A/en
Application filed by International Standard Electric Corp filed Critical International Standard Electric Corp
Priority to FR22308A priority Critical patent/FR1440329A/en
Application granted granted Critical
Publication of FR1440329A publication Critical patent/FR1440329A/en
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
    • H04M3/32—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor for lines between exchanges
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/40—Monitoring; Testing of relay systems
    • 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
FR22308A 1964-06-26 1965-06-25 Improvements to communication systems Expired FR1440329A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR22308A FR1440329A (en) 1964-06-26 1965-06-25 Improvements to communication systems

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB26502/64A GB998760A (en) 1964-06-26 1964-06-26 Improvements in or relating to communication systems
FR22308A FR1440329A (en) 1964-06-26 1965-06-25 Improvements to communication systems

Publications (1)

Publication Number Publication Date
FR1440329A true FR1440329A (en) 1966-05-27

Family

ID=26164359

Family Applications (1)

Application Number Title Priority Date Filing Date
FR22308A Expired FR1440329A (en) 1964-06-26 1965-06-25 Improvements to communication systems

Country Status (1)

Country Link
FR (1) FR1440329A (en)

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