CH225266A - Circuit arrangement for telephone systems with main and sub-offices. - Google Patents

Circuit arrangement for telephone systems with main and sub-offices.

Info

Publication number
CH225266A
CH225266A CH225266DA CH225266A CH 225266 A CH225266 A CH 225266A CH 225266D A CH225266D A CH 225266DA CH 225266 A CH225266 A CH 225266A
Authority
CH
Switzerland
Prior art keywords
offices
sub
main
circuit arrangement
telephone systems
Prior art date
Application number
Other languages
German (de)
Inventor
Fides Gesellschaft Beschraenk
Original Assignee
Fides Gmbh
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 Fides Gmbh filed Critical Fides Gmbh
Publication of CH225266A publication Critical patent/CH225266A/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

Landscapes

  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Interface Circuits In Exchanges (AREA)
CH225266D 1939-08-02 1940-08-03 Circuit arrangement for telephone systems with main and sub-offices. CH225266A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES138092D DE707540C (en) 1939-08-02 1939-08-02 Circuit arrangement for telephone systems with main and sub-offices

Publications (1)

Publication Number Publication Date
CH225266A true CH225266A (en) 1943-01-15

Family

ID=7540754

Family Applications (2)

Application Number Title Priority Date Filing Date
CH223661D CH223661A (en) 1939-08-02 1940-07-15 Circuit arrangement for telephone systems with main and sub-offices.
CH225266D CH225266A (en) 1939-08-02 1940-08-03 Circuit arrangement for telephone systems with main and sub-offices.

Family Applications Before (1)

Application Number Title Priority Date Filing Date
CH223661D CH223661A (en) 1939-08-02 1940-07-15 Circuit arrangement for telephone systems with main and sub-offices.

Country Status (3)

Country Link
CH (2) CH223661A (en)
DE (1) DE707540C (en)
DK (1) DK60316C (en)

Also Published As

Publication number Publication date
DK60316C (en) 1942-11-09
DE707540C (en) 1941-06-25
CH223661A (en) 1942-09-30

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