CH488366A - Switching device for the parallel connection of two telephones to a subscriber line of a telephone system - Google Patents

Switching device for the parallel connection of two telephones to a subscriber line of a telephone system

Info

Publication number
CH488366A
CH488366A CH278269A CH278269A CH488366A CH 488366 A CH488366 A CH 488366A CH 278269 A CH278269 A CH 278269A CH 278269 A CH278269 A CH 278269A CH 488366 A CH488366 A CH 488366A
Authority
CH
Switzerland
Prior art keywords
telephones
switching device
parallel connection
subscriber line
telephone system
Prior art date
Application number
CH278269A
Other languages
German (de)
Inventor
Ungar Ernst
Original Assignee
Industriselskabet Kristian Kir
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 Industriselskabet Kristian Kir filed Critical Industriselskabet Kristian Kir
Publication of CH488366A publication Critical patent/CH488366A/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/42—Systems providing special services or facilities to subscribers
    • H04M3/58—Arrangements for transferring received calls from one subscriber to another; Arrangements affording interim conversations between either the calling or the called party and a third party

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Interface Circuits In Exchanges (AREA)
CH278269A 1968-02-23 1969-02-21 Switching device for the parallel connection of two telephones to a subscriber line of a telephone system CH488366A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DK73668A DK121241B (en) 1968-02-23 1968-02-23 Dual switch for connecting two telephones to the same subscriber line in a telephone system.

Publications (1)

Publication Number Publication Date
CH488366A true CH488366A (en) 1970-03-31

Family

ID=8096952

Family Applications (1)

Application Number Title Priority Date Filing Date
CH278269A CH488366A (en) 1968-02-23 1969-02-21 Switching device for the parallel connection of two telephones to a subscriber line of a telephone system

Country Status (4)

Country Link
BE (1) BE728587A (en)
CH (1) CH488366A (en)
DE (1) DE1909225B2 (en)
DK (1) DK121241B (en)

Also Published As

Publication number Publication date
DK121241B (en) 1971-09-27
DE1909225A1 (en) 1969-09-04
BE728587A (en) 1969-08-01
DE1909225B2 (en) 1970-08-13

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Legal Events

Date Code Title Description
PL Patent ceased