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FR696894A - Improvements to automatic or semi-automatic type telephone central office systems - Google Patents

Improvements to automatic or semi-automatic type telephone central office systems

Info

Publication number
FR696894A
FR696894A FR696894DA FR696894A FR 696894 A FR696894 A FR 696894A FR 696894D A FR696894D A FR 696894DA FR 696894 A FR696894 A FR 696894A
Authority
FR
France
Prior art keywords
automatic
semi
central office
type telephone
telephone central
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 FR696894A publication Critical patent/FR696894A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/0016—Arrangements providing connection between exchanges
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Telephonic Communication Services (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
FR696894D 1929-10-16 1930-03-17 Improvements to automatic or semi-automatic type telephone central office systems Expired FR696894A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB31404/29A GB343503A (en) 1929-10-16 1929-10-16 Improvements in or relating to automatic or semi-automatic telephone systems

Publications (1)

Publication Number Publication Date
FR696894A true FR696894A (en) 1931-01-09

Family

ID=10322586

Family Applications (1)

Application Number Title Priority Date Filing Date
FR696894D Expired FR696894A (en) 1929-10-16 1930-03-17 Improvements to automatic or semi-automatic type telephone central office systems

Country Status (4)

Country Link
US (1) US1886097A (en)
DE (1) DE595619C (en)
FR (1) FR696894A (en)
GB (4) GB331222A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2508636A (en) * 1944-01-12 1950-05-23 Automatic Elect Lab Telephone system employing connecting switches having automatic impulsing means local to the connecting switches and controlled by the calling lines

Also Published As

Publication number Publication date
GB331204A (en) 1930-06-18
GB331223A (en) 1930-06-18
GB343503A (en) 1931-02-16
GB331222A (en) 1930-06-18
US1886097A (en) 1932-11-01
DE595619C (en) 1934-04-21

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