CH199333A - Circuit arrangement for telephone networks with several groups of extensions. - Google Patents

Circuit arrangement for telephone networks with several groups of extensions.

Info

Publication number
CH199333A
CH199333A CH199333DA CH199333A CH 199333 A CH199333 A CH 199333A CH 199333D A CH199333D A CH 199333DA CH 199333 A CH199333 A CH 199333A
Authority
CH
Switzerland
Prior art keywords
extensions
circuit arrangement
several groups
telephone networks
telephone
Prior art date
Application number
Other languages
German (de)
Inventor
Telefonaktiebolaget L Ericsson
Original Assignee
Ericsson Telefon Ab L M
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 Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Publication of CH199333A publication Critical patent/CH199333A/en

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)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
CH199333D 1936-09-28 1937-09-25 Circuit arrangement for telephone networks with several groups of extensions. CH199333A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE199333X 1936-09-28

Publications (1)

Publication Number Publication Date
CH199333A true CH199333A (en) 1938-08-15

Family

ID=20304846

Family Applications (1)

Application Number Title Priority Date Filing Date
CH199333D CH199333A (en) 1936-09-28 1937-09-25 Circuit arrangement for telephone networks with several groups of extensions.

Country Status (5)

Country Link
US (1) US2220423A (en)
CH (1) CH199333A (en)
DE (1) DE684063C (en)
FR (1) FR827166A (en)
NL (1) NL52553C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1133769B (en) * 1959-12-23 1962-07-26 Ericsson Telefon Ab L M Circuit arrangement for telephone extension systems
DE1261558B (en) * 1961-09-05 1968-02-22 Western Electric Co Circuit arrangement for several centrally combined telephone private branch exchanges, each of which is assigned at least one switchboard

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3215784A (en) * 1961-12-22 1965-11-02 Bell Telephone Labor Inc Multicustomer private branch exchange
GB1084099A (en) * 1963-12-20

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1133769B (en) * 1959-12-23 1962-07-26 Ericsson Telefon Ab L M Circuit arrangement for telephone extension systems
DE1261558B (en) * 1961-09-05 1968-02-22 Western Electric Co Circuit arrangement for several centrally combined telephone private branch exchanges, each of which is assigned at least one switchboard

Also Published As

Publication number Publication date
DE684063C (en) 1939-11-22
NL52553C (en)
US2220423A (en) 1940-11-05
FR827166A (en) 1938-04-20

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