FR636698A - - Google Patents

Info

Publication number
FR636698A
FR636698A FR636698DA FR636698A FR 636698 A FR636698 A FR 636698A FR 636698D A FR636698D A FR 636698DA FR 636698 A FR636698 A FR 636698A
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.)
Expired
Application number
Other languages
French (fr)
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.)
Publication date
Application granted granted Critical
Publication of FR636698A publication Critical patent/FR636698A/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)
FR636698D 1927-03-01 Expired FR636698A (ja)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB572727A GB291510A (en) 1927-03-01 1927-03-01 Improvements in or relating to telephone systems

Publications (1)

Publication Number Publication Date
FR636698A true FR636698A (ja) 1928-04-14

Family

ID=9801486

Family Applications (1)

Application Number Title Priority Date Filing Date
FR636698D Expired FR636698A (ja) 1927-03-01

Country Status (4)

Country Link
BE (1) BE340841A (ja)
FR (1) FR636698A (ja)
GB (1) GB291510A (ja)
NL (1) NL24569C (ja)

Also Published As

Publication number Publication date
BE340841A (ja)
GB291510A (en) 1928-06-01
NL24569C (ja)

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