ATE60967T1 - Monolithisch integrierte fernsprechschaltungen fuer rufabschaltungserkennung. - Google Patents

Monolithisch integrierte fernsprechschaltungen fuer rufabschaltungserkennung.

Info

Publication number
ATE60967T1
ATE60967T1 AT84114086T AT84114086T ATE60967T1 AT E60967 T1 ATE60967 T1 AT E60967T1 AT 84114086 T AT84114086 T AT 84114086T AT 84114086 T AT84114086 T AT 84114086T AT E60967 T1 ATE60967 T1 AT E60967T1
Authority
AT
Austria
Prior art keywords
current
sub
circuit
line
detection
Prior art date
Application number
AT84114086T
Other languages
English (en)
Inventor
Marco Siligoni
Vanni Dr Phys Saviotti
Original Assignee
Sgs Thomson Microelectronics
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 Sgs Thomson Microelectronics filed Critical Sgs Thomson Microelectronics
Application granted granted Critical
Publication of ATE60967T1 publication Critical patent/ATE60967T1/de

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone
    • H04M19/026—Arrangements for interrupting the ringing current

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Telephonic Communication Services (AREA)
  • Manipulation Of Pulses (AREA)
  • Noise Elimination (AREA)
  • Telephone Function (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Nitrogen Condensed Heterocyclic Rings (AREA)
AT84114086T 1983-11-23 1984-11-22 Monolithisch integrierte fernsprechschaltungen fuer rufabschaltungserkennung. ATE60967T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT8323832A IT1212838B (it) 1983-11-23 1983-11-23 Circuito telefonico, integrabile monoliticamente, per il riconoscimento dello sgancio in fase di suoneria.
EP84114086A EP0143435B1 (de) 1983-11-23 1984-11-22 Monolithisch integrierte Fernsprechschaltungen für Rufabschaltungserkennung

Publications (1)

Publication Number Publication Date
ATE60967T1 true ATE60967T1 (de) 1991-03-15

Family

ID=11210289

Family Applications (1)

Application Number Title Priority Date Filing Date
AT84114086T ATE60967T1 (de) 1983-11-23 1984-11-22 Monolithisch integrierte fernsprechschaltungen fuer rufabschaltungserkennung.

Country Status (8)

Country Link
US (1) US4677664A (de)
EP (1) EP0143435B1 (de)
JP (1) JPH0710083B2 (de)
AT (1) ATE60967T1 (de)
BR (1) BR8405956A (de)
DE (2) DE143435T1 (de)
ES (1) ES8600591A1 (de)
IT (1) IT1212838B (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4784435A (en) * 1986-02-26 1988-11-15 Leib Roger K Patient chair
IT1213306B (it) * 1986-07-29 1989-12-20 Sgs Microelettronica Spa Circuito telefonico, integrabile monoliticamente, per l'invio disegnali di suoneria in una linea telefonica d'utente e per il riconoscimento dello sgangio in fase di suoneria.
DE59510969D1 (de) * 1994-03-04 2004-12-30 Infineon Technologies Ag Verfahren zur störsicheren Abhebeerkennung bei Rufsignaleinspeisung in digitalen Fernsprechvermittlungseinrichtungen und Schaltungsanordnung zur Durchführung des Verfahrens
JPH08139802A (ja) * 1994-11-10 1996-05-31 Fujitsu Ltd リングトリップ判定回路
US5544241A (en) * 1995-06-27 1996-08-06 Andrew S. Dibner Telephone ring detector

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3829619A (en) * 1972-12-29 1974-08-13 Stromberg Carlson Corp Telephone ring trip circuit
CH604453A5 (de) * 1976-06-25 1978-09-15 Ibm
FR2452832A1 (fr) * 1979-03-30 1980-10-24 Telecommunications Sa Dispositif de commande de sonnerie
FR2470498A1 (fr) * 1979-11-21 1981-05-29 Trt Telecom Radio Electr Dispositif de detection du bouclage d'une ligne d'abonne pendant la sonnerie
IT1128374B (it) * 1980-02-19 1986-05-28 Cselt Centro Studi Lab Telecom Circuito telefonico per la generazione del ritmo di suoneria ed il riconoscimento dello sgancio
US4396805A (en) * 1981-09-21 1983-08-02 Siemens Corporation Ring trip detector for a subscriber line interface circuit
IT1155661B (it) * 1982-03-24 1987-01-28 Cselt Centro Studi Lab Telecom Circuito elettronico per la rivelazione dello sgancio del microtelefono in presenza della corrente di chiamata

Also Published As

Publication number Publication date
ES537753A0 (es) 1985-10-16
IT8323832A0 (it) 1983-11-23
EP0143435A3 (en) 1987-06-16
EP0143435A2 (de) 1985-06-05
DE3484121D1 (de) 1991-03-28
ES8600591A1 (es) 1985-10-16
EP0143435B1 (de) 1991-02-20
IT1212838B (it) 1989-11-30
JPS60152161A (ja) 1985-08-10
DE143435T1 (de) 1987-05-21
US4677664A (en) 1987-06-30
JPH0710083B2 (ja) 1995-02-01
BR8405956A (pt) 1985-09-10

Similar Documents

Publication Publication Date Title
EP0119422A3 (de) Induktanzsimulator
ATE60967T1 (de) Monolithisch integrierte fernsprechschaltungen fuer rufabschaltungserkennung.
KR900011128A (ko) 전력원의 출력전압 조정방법과 전압조정기용 감지제어회로
KR970700973A (ko) 호출신호 동안 오프-후크 검출방법 및 호출신호 동안 오프-후크 검출용 가입자 라인 인터페이스 회로의 사용(a method for off-hook detection during ringing and the use of a subscriber line interface circuit for off-hook detection during ringing)
IE862984L (en) Telephone power supply
MY106186A (en) Image signal average picture level detecting apparatus.
SE8602889L (sv) Sett och anordning att strommata en telefonlinje for att vid begrensad batterispenning kunna overfora en odistorderad talsignal
CA2055633A1 (en) Electrical measuring device having two connection configurations
JPS5637793A (en) Loop detecting circuit
GB2068682A (en) Telephone eavesdropper detector
JPS5717207A (en) Amplifying circuit
ES476608A1 (es) Un amplificador puente bidireccional.
BR9202108A (pt) Conjunto de circuitos de telefone com circuito detector de desengate
DE69228407D1 (de) Strombegrenzte Teilnehmerschnittstellenschaltung
JPS533767A (en) Input-output-insulation circuit using photocoupler
SU1108366A1 (ru) Датчик активного тока дл устройства защиты генератора
JPS56122552A (en) Subscriber's terminal circuit
JPS5356906A (en) Ring trip circuit
JPS57132408A (en) Protecting circuit for output of operational amplifier
JPS6430395A (en) Key telephone system
JPS55124354A (en) Terminal connection system
JPS5591212A (en) Direct current amplifier circuit
JPS54127544A (en) Multifunction protective relay
JPS59221147A (ja) リング・トリツプ回路
JPS56136005A (en) Biasing circuit

Legal Events

Date Code Title Description
UEP Publication of translation of european patent specification
REN Ceased due to non-payment of the annual fee