ATE3932T1 - Schaltungsanordnung zur umschaltung von tonfrequenter signalabgabe auf sprechbetrieb und umgekehrt in fernmeldegeraeten. - Google Patents

Schaltungsanordnung zur umschaltung von tonfrequenter signalabgabe auf sprechbetrieb und umgekehrt in fernmeldegeraeten.

Info

Publication number
ATE3932T1
ATE3932T1 AT80100852T AT80100852T ATE3932T1 AT E3932 T1 ATE3932 T1 AT E3932T1 AT 80100852 T AT80100852 T AT 80100852T AT 80100852 T AT80100852 T AT 80100852T AT E3932 T1 ATE3932 T1 AT E3932T1
Authority
AT
Austria
Prior art keywords
circuit
switch
key selection
whose
key
Prior art date
Application number
AT80100852T
Other languages
German (de)
English (en)
Inventor
Bernhard Dipl.-Ing. Rall
Original Assignee
Licentia Patent-Verwaltungs-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 Licentia Patent-Verwaltungs-Gmbh filed Critical Licentia Patent-Verwaltungs-Gmbh
Application granted granted Critical
Publication of ATE3932T1 publication Critical patent/ATE3932T1/de

Links

Classifications

    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Telephonic Communication Services (AREA)
  • Devices For Supply Of Signal Current (AREA)
AT80100852T 1979-02-21 1980-02-21 Schaltungsanordnung zur umschaltung von tonfrequenter signalabgabe auf sprechbetrieb und umgekehrt in fernmeldegeraeten. ATE3932T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2906579A DE2906579B1 (de) 1979-02-21 1979-02-21 Schaltungsanordnung zur Umschaltung von tonfrequenter Signalabgabe auf Sprechbetrieb und umgekehrt in Fernmeldegeraeten
EP80100852A EP0016950B1 (de) 1979-02-21 1980-02-21 Schaltungsanordnung zur Umschaltung von tonfrequenter Signalabgabe auf Sprechbetrieb und umgekehrt in Fernmeldegeräten

Publications (1)

Publication Number Publication Date
ATE3932T1 true ATE3932T1 (de) 1983-07-15

Family

ID=6063461

Family Applications (1)

Application Number Title Priority Date Filing Date
AT80100852T ATE3932T1 (de) 1979-02-21 1980-02-21 Schaltungsanordnung zur umschaltung von tonfrequenter signalabgabe auf sprechbetrieb und umgekehrt in fernmeldegeraeten.

Country Status (3)

Country Link
EP (1) EP0016950B1 (enExample)
AT (1) ATE3932T1 (enExample)
DE (1) DE2906579B1 (enExample)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT377143B (de) * 1983-03-04 1985-02-11 Kapsch Ag Teilnehmerapparat mit tastwahl, insbesondere nach dem mehrfrequenzverfahren
AU622744B2 (en) * 1989-02-02 1992-04-16 Alcatel Australia Limited Dialler chip mode signal
KR0138189B1 (ko) * 1995-05-31 1998-07-01 김광호 디지탈키폰전화기에서 스피커폰 사용시 톤신호 노이즈 제거방법

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA861632A (en) * 1969-03-19 1971-01-19 Northern Electric Company Limited Pushbutton dial telephone set
CH491562A (de) * 1969-10-14 1970-05-31 Autophon Ag Schaltungsanordnung für Telephonteilnehmerstationen mit einer Einrichtung zur Abgabe von Tonfrequenz-Wahlsignalen
IT968706B (it) * 1971-10-07 1974-03-20 Ericsson Telefon Ab L M Dispositivo a circuito elettronico per disconnettere il circuito di trasmissione di un apparecchio telefonico durante una trasmissio ne in cifra
FR2279283A1 (fr) * 1974-07-19 1976-02-13 Telic Telephonie Indle Et Cale Poste a clavier
DE2548679A1 (de) * 1975-10-30 1977-05-05 Siemens Ag Schaltungsanordnung zur ansteuerung eines mehrfrequenzoszillators fuer teilnehmerstationen

Also Published As

Publication number Publication date
EP0016950B1 (de) 1983-06-22
DE2906579C2 (enExample) 1981-04-09
EP0016950A1 (de) 1980-10-15
DE2906579B1 (de) 1980-07-17

Similar Documents

Publication Publication Date Title
US4011413A (en) Hold circuit for telephone
GB1534459A (en) Key telephone circuit
US3424870A (en) Multifrequency signal generator for tone-dialed telephones
ATE10792T1 (de) Telephonschaltung.
ATE3932T1 (de) Schaltungsanordnung zur umschaltung von tonfrequenter signalabgabe auf sprechbetrieb und umgekehrt in fernmeldegeraeten.
US2824173A (en) Transistor selective ringing, dialing, and party identification circuit
US3973084A (en) Electric impulse transmitters for telephone instruments
US3723662A (en) D.c. compensated subscriber interface transformer circuit for telephone system
US3284577A (en) Substation apparatus employing a multi- frequency signaling arrangement
US3931474A (en) Tone injection circuit
US4508938A (en) Push-button dial for a telephone
US3197570A (en) Telephone subscriber sets using amplifiers
GB1452254A (en) Circuit arrangement for a tone pushbutton selection telephone subscriber set
FR2366756A1 (fr) Circuit electronique d'injection de sonnerie
US3971896A (en) Two-tone generator using switching transistors in LC resonant circuits controlled by push-button
US3428755A (en) Hybrid termination switch responsive to ringing signal
KR890011284A (ko) 전화기의 온-훅크 다이얼링 및 음악 송출 제어회로
KR950000963B1 (ko) 키폰 전화기에서 온훅시 내선 통화 선택회로
JPS6488597A (en) Acoustic signal formation circuit
JPS5689159A (en) Speaker switching telephone system
US3439191A (en) Timing circuit
KR880002340A (ko) 전화기 세트
JPS6419844A (en) Cordless telephone set
JPS6480144A (en) Telephone set
JPS56112194A (en) Omnibus circuit device

Legal Events

Date Code Title Description
REN Ceased due to non-payment of the annual fee