FR1208212A - Improvements to telephone systems - Google Patents

Improvements to telephone systems

Info

Publication number
FR1208212A
FR1208212A FR1208212DA FR1208212A FR 1208212 A FR1208212 A FR 1208212A FR 1208212D A FR1208212D A FR 1208212DA FR 1208212 A FR1208212 A FR 1208212A
Authority
FR
France
Prior art keywords
telephone systems
telephone
systems
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)
Inventor
Paul Cochennec
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.)
Societe des Telephones Ericsson SA
Original Assignee
Societe des Telephones Ericsson SA
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 Societe des Telephones Ericsson SA filed Critical Societe des Telephones Ericsson SA
Application granted granted Critical
Publication of FR1208212A publication Critical patent/FR1208212A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/58—Arrangements providing connection between main exchange and sub-exchange or satellite
    • H04Q3/62—Arrangements providing connection between main exchange and sub-exchange or satellite for connecting to private branch exchanges
    • H04Q3/625—Arrangements in the private branch exchange

Landscapes

  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
FR1208212D 1957-08-08 1957-08-08 Improvements to telephone systems Expired FR1208212A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1208212T 1957-08-08

Publications (1)

Publication Number Publication Date
FR1208212A true FR1208212A (en) 1960-02-22

Family

ID=9674288

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1208212D Expired FR1208212A (en) 1957-08-08 1957-08-08 Improvements to telephone systems

Country Status (1)

Country Link
FR (1) FR1208212A (en)

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