ES411687A1 - Un circuito para interrumpir la senal de llamada. - Google Patents

Un circuito para interrumpir la senal de llamada.

Info

Publication number
ES411687A1
ES411687A1 ES411687A ES411687A ES411687A1 ES 411687 A1 ES411687 A1 ES 411687A1 ES 411687 A ES411687 A ES 411687A ES 411687 A ES411687 A ES 411687A ES 411687 A1 ES411687 A1 ES 411687A1
Authority
ES
Spain
Prior art keywords
trip circuit
ring trip
oscillator
controlled
ringing
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
ES411687A
Other languages
English (en)
Spanish (es)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nokia Spain SA
Original Assignee
Alcatel Espana SA
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 Alcatel Espana SA filed Critical Alcatel Espana SA
Publication of ES411687A1 publication Critical patent/ES411687A1/es
Expired legal-status Critical Current

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)
  • Devices For Supply Of Signal Current (AREA)
  • Interface Circuits In Exchanges (AREA)
ES411687A 1972-02-17 1973-02-16 Un circuito para interrumpir la senal de llamada. Expired ES411687A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7205290A FR2172537A5 (enExample) 1972-02-17 1972-02-17

Publications (1)

Publication Number Publication Date
ES411687A1 true ES411687A1 (es) 1976-01-01

Family

ID=9093631

Family Applications (1)

Application Number Title Priority Date Filing Date
ES411687A Expired ES411687A1 (es) 1972-02-17 1973-02-16 Un circuito para interrumpir la senal de llamada.

Country Status (10)

Country Link
US (1) US3835258A (enExample)
AR (1) AR195702A1 (enExample)
BR (1) BR7301219D0 (enExample)
CA (1) CA971689A (enExample)
CH (1) CH562539A5 (enExample)
DE (1) DE2307317A1 (enExample)
ES (1) ES411687A1 (enExample)
FR (1) FR2172537A5 (enExample)
GB (1) GB1386523A (enExample)
IT (1) IT979129B (enExample)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE7512060L (sv) * 1974-11-07 1976-05-10 Western Electric Co Anordning for att i en telekommunikationsanleggning patrycka och detektera ringsignaler over en anropad linje
US4447673A (en) * 1977-12-27 1984-05-08 Stromberg-Carlson Corporation Ring trip apparatus for a line circuit connected to DCO switch
ES244069Y (es) * 1979-06-21 1980-04-01 Circuito detector de corriente.
US4447675A (en) * 1982-10-29 1984-05-08 Bell Telephone Laboratories, Incorporated Ring-trip detector
EP0165363B1 (fr) * 1984-06-20 1988-08-31 International Business Machines Corporation Circuit detecteur de variations de courant

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3312787A (en) * 1963-10-17 1967-04-04 Stromberg Carlson Corp Signaling system
DE1288626B (de) * 1966-05-28 1969-02-06 Nippon Electric Co Automatische Geraeteabschaltanordnung fuer einen Fernempfaenger
BE756517A (fr) * 1969-09-23 1971-03-01 Ericsson Telefon Ab L M Interrupteur pour signaux d'appel de centraux telephoniques automatiques
US3641552A (en) * 1970-02-18 1972-02-08 Int Assemblix Corp Centrally located access alarm system

Also Published As

Publication number Publication date
IT979129B (it) 1974-09-30
BR7301219D0 (pt) 1974-02-19
GB1386523A (en) 1975-03-05
AR195702A1 (es) 1973-10-31
DE2307317A1 (de) 1973-08-30
FR2172537A5 (enExample) 1973-09-28
CH562539A5 (enExample) 1975-05-30
US3835258A (en) 1974-09-10
CA971689A (en) 1975-07-22

Similar Documents

Publication Publication Date Title
ES410234A1 (es) Circuito electronico mejorado para la retencion de llamada para sistemas de comunicaciones.
GB1150594A (en) Circuit Arrangement to Supervise the Loop Resistance of a Telecommunication, particularly Telephone Line
GB859111A (en) Improvements in or relating to telephone subscriber sets using amplifiers
ES411687A1 (es) Un circuito para interrumpir la senal de llamada.
ES462859A1 (es) Un circuito de acoplamiento perfeccionado para interconectaruna linea de transmision de una unidad terminal de remota a una unidad central.
SE8001541L (sv) Treledarstrommatningskrets for telefonapparat
JPS57104325A (en) Ecl circuit
GB1350205A (en) Telephone subscribers instrument circuits
GB1142982A (en) Telephone ringing circuit
FR2366756A1 (fr) Circuit electronique d'injection de sonnerie
GB986310A (en) Telephone tone ringer
US3748391A (en) Telephone ring-trip circuit
JPS5687971A (en) Electronic ring trip circuit
GB907374A (en) Improvements in or relating to telephone circuit arrangements
GB1462816A (en) Apparatus for converting a telephone number selected by actuation of a key or button set into dialling pulses
JPS5368010A (en) Ring trip circuit
GB1504062A (en) Loop current detector
GB1012053A (en) Improvements in or relating to telephone intercepting trunk circuits
SU385402A1 (ru) Устройство приема импульсов набора номера для приборов автоматических телефонных станций
KR860002227Y1 (ko) 홈 키폰(Home Keyphone)의 대기음악 송출회로
JPS52142905A (en) Control device of telephone call current supply
JPS52101907A (en) Shunt type current switching scanning method
JPS57162868A (en) Data terminal device
GB1472442A (en) Power supply circuits
JPS524720A (en) Two-ways constant current circuit