ES453912A1 - Perfeccionamientos en generadores de llamadas telefonicas para generar senales de llamada en la estacion distante de un abonado. - Google Patents

Perfeccionamientos en generadores de llamadas telefonicas para generar senales de llamada en la estacion distante de un abonado.

Info

Publication number
ES453912A1
ES453912A1 ES453912A ES453912A ES453912A1 ES 453912 A1 ES453912 A1 ES 453912A1 ES 453912 A ES453912 A ES 453912A ES 453912 A ES453912 A ES 453912A ES 453912 A1 ES453912 A1 ES 453912A1
Authority
ES
Spain
Prior art keywords
remote
carrier
telephone ringing
electronics
ringing generators
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
ES453912A
Other languages
English (en)
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.)
AT&T Corp
Original Assignee
Western Electric Co Inc
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 Western Electric Co Inc filed Critical Western Electric Co Inc
Publication of ES453912A1 publication Critical patent/ES453912A1/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
    • H04M19/04—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone the ringing-current being generated at the substations

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Telephonic Communication Services (AREA)
ES453912A 1975-12-05 1976-12-03 Perfeccionamientos en generadores de llamadas telefonicas para generar senales de llamada en la estacion distante de un abonado. Expired ES453912A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/638,151 US4015091A (en) 1975-12-05 1975-12-05 Telephone ringing generators

Publications (1)

Publication Number Publication Date
ES453912A1 true ES453912A1 (es) 1977-11-16

Family

ID=24558846

Family Applications (1)

Application Number Title Priority Date Filing Date
ES453912A Expired ES453912A1 (es) 1975-12-05 1976-12-03 Perfeccionamientos en generadores de llamadas telefonicas para generar senales de llamada en la estacion distante de un abonado.

Country Status (10)

Country Link
US (1) US4015091A (es)
JP (1) JPS5269510A (es)
AU (1) AU2009776A (es)
BE (1) BE849000A (es)
CA (1) CA1063741A (es)
DE (1) DE2655156A1 (es)
ES (1) ES453912A1 (es)
FR (1) FR2334251A1 (es)
IT (1) IT1064831B (es)
SE (1) SE7613129L (es)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4156150A (en) * 1977-12-16 1979-05-22 Bell Telephone Laboratories, Incorporated Circuit for regulating a DC voltage on which a large AC voltage is superimposed
US4239935A (en) * 1979-04-27 1980-12-16 Bell Telephone Laboratories, Incorporated Ringing generator
US4415961A (en) * 1981-08-26 1983-11-15 Bell Telephone Laboratories, Incorporated Telephone ringing signal generator
US4866587A (en) * 1988-12-22 1989-09-12 American Telephone And Telegraph Company At&T Bell Laboratories Electronic ringing signal generator
US5307407A (en) * 1991-12-19 1994-04-26 Nec America, Inc. 20 Hz ring generator using high frequency PWM control
JPH05176354A (ja) * 1991-12-20 1993-07-13 Fujitsu Ltd 加入者インタフェース回路
US5420915A (en) * 1992-11-25 1995-05-30 Garrett; Timothy E. Apparatus for instruction in use of telephone
GB2274959B (en) * 1993-02-08 1997-03-12 Neal Ferris Battery powered telephone visual ringing indicator
US5838788A (en) * 1996-10-17 1998-11-17 Northern Telecom Limited Telephone ringing signal generator
SE507739C2 (sv) * 1996-11-08 1998-07-06 Ericsson Telefon Ab L M Anordning vid en linjekrets för mätning av linjespänning

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3475561A (en) * 1965-09-29 1969-10-28 Superior Continental Corp Telephone carrier system having selfcontained independently attachable line tap units
US3471650A (en) * 1966-02-07 1969-10-07 Superior Continental Corp Telephone signaling system for rejecting spurious ringing signals
US3459895A (en) * 1966-05-19 1969-08-05 Itt Centrally powered subscriber carrier systems
US3536852A (en) * 1969-01-23 1970-10-27 Lorain Prod Corp Telephone interruption switching circuitry
US3780228A (en) * 1972-03-01 1973-12-18 Gte Automatic Electric Lab Inc Automatic disconnect circuit for reducing dial pulse distortion caused by subscriber carrier equipment
US3904833A (en) * 1973-06-04 1975-09-09 Superior Continental Corp Ringing generator circuit with capacitor storage
US3941941A (en) * 1973-09-27 1976-03-02 Superior Continental Corporation Relayless switching circuit for application of ringing signals
US3927266A (en) * 1974-01-16 1975-12-16 Gte Automatic Electric Lab Inc Ringer power generator circuit for subscriber carrier station terminal
JPS5342562B2 (es) * 1974-03-20 1978-11-13
US3934089A (en) * 1974-10-31 1976-01-20 Gte Automatic Electric Laboratories Incorporated Automatic disconnect circuit for subscriber carrier telephone system

Also Published As

Publication number Publication date
AU2009776A (en) 1978-06-08
IT1064831B (it) 1985-02-25
FR2334251A1 (fr) 1977-07-01
CA1063741A (en) 1979-10-02
BE849000A (fr) 1977-04-01
JPS5269510A (en) 1977-06-09
US4015091A (en) 1977-03-29
DE2655156A1 (de) 1977-06-16
SE7613129L (sv) 1977-06-06

Similar Documents

Publication Publication Date Title
ZA747073B (en) A method of and arrangement for automatically isolating a faulty section of a power cable forming part of an electrical energy supply network
ES453912A1 (es) Perfeccionamientos en generadores de llamadas telefonicas para generar senales de llamada en la estacion distante de un abonado.
ES453914A1 (es) Perfeccionamientos en generadores de llamada.
GB1366984A (en) Power supply
JPS6473844A (en) Radio communication equipment
ES483141A1 (es) Perfeccionamientos en los dispositivos electricos de alimen-tacion para vehiculos automoviles
JPS5323219A (en) Multiple-address communication system
JPS522113A (en) Telephone current suplying system
YU41321B (en) Method of recharging the negative electrode of an alkaline nickel-cadmium battery
CA1004784A (en) Ringer power generator circuit for subscriber carrier station terminal
JPS57103467A (en) Public terminal communication system
JPS5752243A (en) Wireless communication equipment
CH609512A5 (en) Ringing current generating arrangement in a subscriber telephone station of a local battery telephone system
GB2063017B (en) Telephone system subscriber battery charging
JPS5321503A (en) Charging system of coin throwing-in type telephone set
GB1521468A (en) Circuit arrangement for telephone subset
ZA774382B (en) A line power supply circuit for telephone subscriber equipment
GB1154739A (en) Impulse Generator for use in a Push Button Telephone
BE844128A (fr) Installation de charge pour la batterie d'alimentation d'un appareil electrique
JPS5377985A (en) Remote controller
JPS6489843A (en) Handset for radiotelephony set
JPS5324865A (en) Portable electronic timepiece
JPS5241846A (en) Method of producing chargeable alkaline battery
JPS5723358A (en) Third party charging system
JPS5355905A (en) Automatic dialing system