DK119930B - Kobling til tonefrekvenstastaturvalg uden jævnstrømsvælgeimpulsovervågningssignal i telekommunikationsanlæg, især telefonanlæg. - Google Patents

Kobling til tonefrekvenstastaturvalg uden jævnstrømsvælgeimpulsovervågningssignal i telekommunikationsanlæg, især telefonanlæg.

Info

Publication number
DK119930B
DK119930B DK323165AA DK323165A DK119930B DK 119930 B DK119930 B DK 119930B DK 323165A A DK323165A A DK 323165AA DK 323165 A DK323165 A DK 323165A DK 119930 B DK119930 B DK 119930B
Authority
DK
Denmark
Prior art keywords
systems
coupling
direct current
monitoring signal
tone frequency
Prior art date
Application number
DK323165AA
Other languages
Danish (da)
English (en)
Inventor
L Gasser
Original Assignee
Standard Electric Ak
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 Standard Electric Ak filed Critical Standard Electric Ak
Publication of DK119930B publication Critical patent/DK119930B/da

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker
    • 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
    • H04M1/30—Devices which can set up and transmit only one digit at a time
    • H04M1/50—Devices which can set up and transmit only one digit at a time by generating or selecting currents of predetermined frequencies or combinations of frequencies
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems

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)
  • Interface Circuits In Exchanges (AREA)
  • Telephone Function (AREA)
DK323165AA 1964-07-10 1965-06-25 Kobling til tonefrekvenstastaturvalg uden jævnstrømsvælgeimpulsovervågningssignal i telekommunikationsanlæg, især telefonanlæg. DK119930B (da)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DEST22384A DE1201417B (de) 1964-07-10 1964-07-10 Tonfrequentes Tastwahlverfahren ohne Gleichstrom-Wahlbegleitzeichen in Fernmelde-, insbesondere Fernsprechanlagen und Schaltungsanordnung zur Durchfuehrung des Verfahrens
DE1236598 1964-12-08
DEST23048A DE1236598B (de) 1964-07-10 1964-12-08 Tonfrequentes Tastwahlverfahren mit erneuter Anschaltung eines Registers bei bestehender Verbindung

Publications (1)

Publication Number Publication Date
DK119930B true DK119930B (da) 1971-03-15

Family

ID=27180474

Family Applications (1)

Application Number Title Priority Date Filing Date
DK323165AA DK119930B (da) 1964-07-10 1965-06-25 Kobling til tonefrekvenstastaturvalg uden jævnstrømsvælgeimpulsovervågningssignal i telekommunikationsanlæg, især telefonanlæg.

Country Status (10)

Country Link
US (2) US3454726A (xx)
BE (2) BE666711A (xx)
CH (2) CH427923A (xx)
DE (2) DE1201417B (xx)
DK (1) DK119930B (xx)
FI (1) FI42107B (xx)
FR (2) FR1439664A (xx)
GB (2) GB1091576A (xx)
NL (2) NL6508853A (xx)
SE (1) SE312155B (xx)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1537837B1 (de) * 1967-09-28 1970-11-12 Siemens Ag Schaltungsanordnung fuer frequenzselektive Waehlkennzeichenempfaenger in Fernmelde-,insbesondere Fernsprechanlagen
US3665489A (en) * 1969-06-06 1972-05-23 Ericsson Telefon Ab L M Telephone instrument for voice frequency choice of number
US3911223A (en) * 1971-12-02 1975-10-07 Siemens Ag Circuit arrangement for subscriber stations in telecommunications installations, especially telephone installations with auxiliary data traffic
GB1395577A (en) * 1972-05-11 1975-05-29 Standard Telephones Cables Ltd Telephones
JPS5012913A (xx) * 1973-06-04 1975-02-10
NL7402574A (nl) * 1974-02-26 1975-08-28 Philips Nv Schakeling voor een toondruktoetskeuzetelefoon- toestel.
AT379478B (de) * 1978-04-15 1986-01-10 Telefonbau & Normalzeit Gmbh Schaltungsanordnung fuer teilnehmerapparate in fernsprechnebenstellenanlagen mit tonfrequenter tastwahl
US4516781A (en) * 1982-11-17 1985-05-14 Industrial Design Electronic Associates, Inc. Dart game with two microcomputers

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1221166A (en) * 1916-04-26 1917-04-03 Western Electric Co Telephone-exchange system.
US2332290A (en) * 1942-08-04 1943-10-19 Bell Telephone Labor Inc Communication system
BE559221A (xx) * 1956-07-26
NL100359C (xx) * 1957-03-14
BE565636A (xx) * 1957-03-14
CH392630A (de) * 1962-02-20 1965-05-31 Autophon Ag Schaltungsanordnung für Telephonteilnehmerstationen zur Erzeugung von je mindestens eine Tonfrequenz enthaltenden Wahlkriterien

Also Published As

Publication number Publication date
FR1439664A (fr) 1966-05-20
BE673410A (xx) 1966-06-08
NL6515649A (xx) 1966-06-09
CH427923A (de) 1967-01-15
CH437438A (de) 1967-06-15
FR89093E (fr) 1967-05-05
GB1091576A (en) 1967-11-22
BE666711A (xx) 1966-01-12
FI42107B (xx) 1970-02-02
DE1236598B (de) 1967-03-16
SE312155B (xx) 1969-07-07
NL6508853A (xx) 1966-01-11
US3496302A (en) 1970-02-17
US3454726A (en) 1969-07-08
DE1201417B (de) 1965-09-23
GB1085938A (en) 1967-10-04

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