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FR930984A - Perfectionnements aux systèmes de téléphonie automatique - Google Patents

Perfectionnements aux systèmes de téléphonie automatique

Info

Publication number
FR930984A
FR930984A FR930984DA FR930984A FR 930984 A FR930984 A FR 930984A FR 930984D A FR930984D A FR 930984DA FR 930984 A FR930984 A FR 930984A
Authority
FR
France
Prior art keywords
telephone systems
automatic telephone
automatic
systems
telephone
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
English (en)
Inventor
Gerald Deakin
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
Priority claimed from US593602A external-priority patent/US2567190A/en
Application filed by International Standard Electric Corp filed Critical International Standard Electric Corp
Application granted granted Critical
Publication of FR930984A publication Critical patent/FR930984A/fr
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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/18—Electrical details

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)
FR930984D 1945-05-14 1946-05-21 Perfectionnements aux systèmes de téléphonie automatique Expired FR930984A (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US593602A US2567190A (en) 1945-05-14 1945-05-14 Telephone exchange system
US930984XA 1945-05-21 1945-05-21
US594873A US2465359A (en) 1945-05-14 1945-05-21 Tie line for automatic telephone exchanges

Publications (1)

Publication Number Publication Date
FR930984A true FR930984A (fr) 1948-02-10

Family

ID=33102039

Family Applications (1)

Application Number Title Priority Date Filing Date
FR930984D Expired FR930984A (fr) 1945-05-14 1946-05-21 Perfectionnements aux systèmes de téléphonie automatique

Country Status (2)

Country Link
US (1) US2465359A (fr)
FR (1) FR930984A (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3003040A (en) * 1956-01-25 1961-10-03 Gen Dynamics Corp Modified trunk circuit
US2916554A (en) * 1956-03-28 1959-12-08 Gen Dynamics Corp Telephone system
US3150236A (en) * 1961-08-29 1964-09-22 Bell Telephone Labor Inc Integrated two-and four-wire telephone switching system

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1224374A (en) * 1917-03-03 1917-05-01 Western Electric Co Two-way, two-wire trunk for multi-office automatic exchange systems.
US2289895A (en) * 1941-03-29 1942-07-14 Bell Telephone Labor Inc Telephone system
US2380950A (en) * 1943-04-23 1945-08-07 Int Standard Electric Corp Telecommunication system

Also Published As

Publication number Publication date
US2465359A (en) 1949-03-29

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