FR613022A - Improvements to systems for automatic telephone central offices - Google Patents

Improvements to systems for automatic telephone central offices

Info

Publication number
FR613022A
FR613022A FR613022DA FR613022A FR 613022 A FR613022 A FR 613022A FR 613022D A FR613022D A FR 613022DA FR 613022 A FR613022 A FR 613022A
Authority
FR
France
Prior art keywords
systems
automatic telephone
central offices
telephone central
offices
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
Other languages
French (fr)
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.)
Thales SA
Original Assignee
Le Materiel Telephonique Thomson CSF
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 Le Materiel Telephonique Thomson CSF filed Critical Le Materiel Telephonique Thomson CSF
Application granted granted Critical
Publication of FR613022A publication Critical patent/FR613022A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/08—Indicating faults in circuits or apparatus
    • H04M3/12—Marking faulty circuits "busy"; Enabling equipment to disengage itself from faulty circuits ; Using redundant circuits; Response of a circuit, apparatus or system to an error

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
FR613022D 1926-02-25 1926-02-25 Improvements to systems for automatic telephone central offices Expired FR613022A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR613022T 1926-02-25

Publications (1)

Publication Number Publication Date
FR613022A true FR613022A (en) 1926-11-06

Family

ID=8979224

Family Applications (1)

Application Number Title Priority Date Filing Date
FR613022D Expired FR613022A (en) 1926-02-25 1926-02-25 Improvements to systems for automatic telephone central offices

Country Status (1)

Country Link
FR (1) FR613022A (en)

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