CH441446A - Circuit arrangement for telecommunications, in particular telephone extension systems with dialing stations with earth buttons - Google Patents

Circuit arrangement for telecommunications, in particular telephone extension systems with dialing stations with earth buttons

Info

Publication number
CH441446A
CH441446A CH1458165A CH1458165A CH441446A CH 441446 A CH441446 A CH 441446A CH 1458165 A CH1458165 A CH 1458165A CH 1458165 A CH1458165 A CH 1458165A CH 441446 A CH441446 A CH 441446A
Authority
CH
Switzerland
Prior art keywords
telecommunications
buttons
earth
circuit arrangement
particular telephone
Prior art date
Application number
CH1458165A
Other languages
German (de)
Inventor
Schoen Siegfried
Original Assignee
Siemens Ag
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 Siemens Ag filed Critical Siemens Ag
Publication of CH441446A publication Critical patent/CH441446A/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/26—Devices for calling a subscriber
    • H04M1/53—Generation of additional signals, e.g. additional pulses
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Telephonic Communication Services (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
CH1458165A 1964-10-23 1965-10-21 Circuit arrangement for telecommunications, in particular telephone extension systems with dialing stations with earth buttons CH441446A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1964S0093863 DE1211288C2 (en) 1964-10-23 1964-10-23 CIRCUIT ARRANGEMENT FOR DIALING STATIONS IN TELEPHONE SYSTEMS, IN PARTICULAR TELEPHONE EXTENSION SYSTEMS WITH EARTH BUTTON

Publications (1)

Publication Number Publication Date
CH441446A true CH441446A (en) 1967-08-15

Family

ID=7518315

Family Applications (1)

Application Number Title Priority Date Filing Date
CH1458165A CH441446A (en) 1964-10-23 1965-10-21 Circuit arrangement for telecommunications, in particular telephone extension systems with dialing stations with earth buttons

Country Status (7)

Country Link
AT (1) AT259034B (en)
BE (1) BE671296A (en)
CH (1) CH441446A (en)
DE (1) DE1211288C2 (en)
GB (1) GB1077478A (en)
NL (1) NL153750B (en)
SE (1) SE318913B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2210852C2 (en) * 1972-03-07 1982-07-29 Telefonbau Und Normalzeit Gmbh, 6000 Frankfurt Dial pulse code generator - has bistable relay connecting and disconnecting power supply to subscriber line
DE3541546A1 (en) * 1985-11-25 1987-05-27 Ant Nachrichtentech Arrangement for the implementation of an earth key function

Also Published As

Publication number Publication date
NL6513143A (en) 1966-04-25
BE671296A (en) 1966-04-22
SE318913B (en) 1969-12-22
DE1211288B (en) 1975-01-09
GB1077478A (en) 1967-07-26
AT259034B (en) 1967-12-27
DE1211288C2 (en) 1975-01-09
NL153750B (en) 1977-06-15

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