FR2027686A1 - - Google Patents

Info

Publication number
FR2027686A1
FR2027686A1 FR7000025A FR7000025A FR2027686A1 FR 2027686 A1 FR2027686 A1 FR 2027686A1 FR 7000025 A FR7000025 A FR 7000025A FR 7000025 A FR7000025 A FR 7000025A FR 2027686 A1 FR2027686 A1 FR 2027686A1
Authority
FR
France
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.)
Withdrawn
Application number
FR7000025A
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
Application filed by International Standard Electric Corp filed Critical International Standard Electric Corp
Publication of FR2027686A1 publication Critical patent/FR2027686A1/fr
Withdrawn legal-status Critical Current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
    • H04B17/401—Monitoring; Testing of relay systems with selective localization
    • H04B17/402—Monitoring; Testing of relay systems with selective localization using different frequencies
    • H04B17/405—Monitoring; Testing of relay systems with selective localization using different frequencies generated by local multipliers, dividers, modulators

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)
FR7000025A 1969-01-02 1970-01-02 Withdrawn FR2027686A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB21969 1969-01-02

Publications (1)

Publication Number Publication Date
FR2027686A1 true FR2027686A1 (fr) 1970-10-02

Family

ID=9700517

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7000025A Withdrawn FR2027686A1 (fr) 1969-01-02 1970-01-02

Country Status (6)

Country Link
US (1) US3637955A (fr)
JP (1) JPS5016602B1 (fr)
DE (1) DE1964881C3 (fr)
ES (1) ES375107A1 (fr)
FR (1) FR2027686A1 (fr)
GB (1) GB1251121A (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1409293A (en) * 1972-02-17 1975-10-08 Marconi Co Ltd Signal transmission systems
JPS5537135B2 (fr) * 1972-09-29 1980-09-26
GB1426831A (en) * 1973-06-14 1976-03-03 Standard Telephones Cables Ltd Testing repeaters
JPS5069914A (fr) * 1973-10-23 1975-06-11
US3912884A (en) * 1974-08-05 1975-10-14 Singer Co Communication monitoring system
US4025737A (en) * 1976-03-24 1977-05-24 Bell Telephone Laboratories, Incorporated Repeater monitoring and fault location
GB1571495A (en) * 1976-04-29 1980-07-16 Plessey Co Ltd Supervisory system for a data transmission system
DE2949639C2 (de) * 1979-12-10 1985-10-10 Siemens AG, 1000 Berlin und 8000 München Überwachung von Übertragungsstrecken für digitale Signale mit höherer Übertragungsgeschwindigkeit
GB2075311B (en) * 1980-08-26 1984-10-03 Standard Telephones Cables Ltd Supervision of transmission systems

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL72361C (fr) * 1959-02-05 1900-01-01
US3059068A (en) * 1960-06-27 1962-10-16 Int Standard Electric Corp Carrier current communication systems incorporating repeaters
US3325605A (en) * 1963-12-19 1967-06-13 Bell Telephone Labor Inc Repeater testing

Also Published As

Publication number Publication date
GB1251121A (fr) 1971-10-27
JPS5016602B1 (fr) 1975-06-14
DE1964881C3 (de) 1973-12-13
US3637955A (en) 1972-01-25
ES375107A1 (es) 1972-03-16
DE1964881A1 (de) 1970-07-16
DE1964881B2 (de) 1973-05-30

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Legal Events

Date Code Title Description
ST Notification of lapse