IT1127993B - Suoneria telefonica di tipo digitale - Google Patents

Suoneria telefonica di tipo digitale

Info

Publication number
IT1127993B
IT1127993B IT67119/80A IT6711980A IT1127993B IT 1127993 B IT1127993 B IT 1127993B IT 67119/80 A IT67119/80 A IT 67119/80A IT 6711980 A IT6711980 A IT 6711980A IT 1127993 B IT1127993 B IT 1127993B
Authority
IT
Italy
Prior art keywords
digital telephone
telephone ringtone
ringtone
digital
telephone
Prior art date
Application number
IT67119/80A
Other languages
English (en)
Other versions
IT8067119A0 (it
Inventor
Giovanni Ponte
Franco Pira
Original Assignee
Cselt Centro Studi Lab Telecom
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 Cselt Centro Studi Lab Telecom filed Critical Cselt Centro Studi Lab Telecom
Publication of IT8067119A0 publication Critical patent/IT8067119A0/it
Priority to IT67119/80A priority Critical patent/IT1127993B/it
Priority to MX185562A priority patent/MX149525A/es
Priority to DK019981AA priority patent/DK154598B/da
Priority to ES498704A priority patent/ES498704A0/es
Priority to BR8100379A priority patent/BR8100379A/pt
Priority to CA000369184A priority patent/CA1162337A/en
Priority to JP914081A priority patent/JPS56114467A/ja
Priority to DE8181100623T priority patent/DE3166657D1/de
Priority to US06/229,174 priority patent/US4365116A/en
Priority to EP81100623A priority patent/EP0033162B1/en
Application granted granted Critical
Publication of IT1127993B publication Critical patent/IT1127993B/it

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)
  • Telephonic Communication Services (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
IT67119/80A 1980-01-29 1980-01-29 Suoneria telefonica di tipo digitale IT1127993B (it)

Priority Applications (10)

Application Number Priority Date Filing Date Title
IT67119/80A IT1127993B (it) 1980-01-29 1980-01-29 Suoneria telefonica di tipo digitale
MX185562A MX149525A (es) 1980-01-29 1981-01-14 Mejoras a generador numerico de tono para aparatos telefonicos
DK019981AA DK154598B (da) 1980-01-29 1981-01-16 Digitalt ringekredsloeb til en telefon
ES498704A ES498704A0 (es) 1980-01-29 1981-01-21 Perfeccionamientos en generadores numericos de tono para aparatos telefonicos
BR8100379A BR8100379A (pt) 1980-01-29 1981-01-23 Campainha telefonica de tipo digital
CA000369184A CA1162337A (en) 1980-01-29 1981-01-23 Digital tone ringer
JP914081A JPS56114467A (en) 1980-01-29 1981-01-26 Digital tone ringing unit
DE8181100623T DE3166657D1 (en) 1980-01-29 1981-01-28 Digital tone ringer
US06/229,174 US4365116A (en) 1980-01-29 1981-01-28 Digital ringing-signal generator
EP81100623A EP0033162B1 (en) 1980-01-29 1981-01-28 Digital tone ringer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT67119/80A IT1127993B (it) 1980-01-29 1980-01-29 Suoneria telefonica di tipo digitale

Publications (2)

Publication Number Publication Date
IT8067119A0 IT8067119A0 (it) 1980-01-29
IT1127993B true IT1127993B (it) 1986-05-28

Family

ID=11299733

Family Applications (1)

Application Number Title Priority Date Filing Date
IT67119/80A IT1127993B (it) 1980-01-29 1980-01-29 Suoneria telefonica di tipo digitale

Country Status (10)

Country Link
US (1) US4365116A (it)
EP (1) EP0033162B1 (it)
JP (1) JPS56114467A (it)
BR (1) BR8100379A (it)
CA (1) CA1162337A (it)
DE (1) DE3166657D1 (it)
DK (1) DK154598B (it)
ES (1) ES498704A0 (it)
IT (1) IT1127993B (it)
MX (1) MX149525A (it)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4491691A (en) * 1983-02-28 1985-01-01 At&T Bell Laboratories Electronic tone ringer
JP2535532Y2 (ja) * 1989-02-10 1997-05-14 ローム 株式会社 マイコンダイアラ
US6243399B1 (en) * 1994-07-21 2001-06-05 Interdigital Technology Corporation Ring signal generator
US6775531B1 (en) * 1994-07-21 2004-08-10 Interdigital Technology Corporation Subscriber terminal temperature regulation
US5610978A (en) * 1994-12-30 1997-03-11 Mitel Corporation Ring discriminator

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE557708A (it) * 1956-06-07
US3508012A (en) * 1967-11-24 1970-04-21 Bell Telephone Labor Inc Compatible tone ringer
US3603740A (en) * 1969-08-18 1971-09-07 Northern Electric Co Method and means for ringing a telephone subset
US3808379A (en) * 1972-05-30 1974-04-30 Gte Automatic Electric Lab Inc Telephone tone ringer
DE2520532B2 (de) * 1975-05-07 1978-09-21 Siemens Ag, 1000 Berlin Und 8000 Muenchen Schaltungsanordnung für eine Ruftoneinrichtung für Fernmelde-, insbesondere Fernsprechanlagen
IT1143632B (it) * 1977-01-24 1986-10-22 Sits Soc It Telecom Siemens Circuito rivelatore di chiamata acustica,specialmente per apparecchi telefonici
IT1083388B (it) * 1977-06-20 1985-05-21 Cselt Centro Studi Lab Telecom Suoneria elettronica per apparecchi telefonici

Also Published As

Publication number Publication date
CA1162337A (en) 1984-02-14
JPS56114467A (en) 1981-09-09
ES8202219A1 (es) 1982-01-01
DK19981A (da) 1981-07-30
EP0033162B1 (en) 1984-10-17
MX149525A (es) 1983-11-18
US4365116A (en) 1982-12-21
IT8067119A0 (it) 1980-01-29
ES498704A0 (es) 1982-01-01
BR8100379A (pt) 1981-08-11
DK154598B (da) 1988-11-28
EP0033162A2 (en) 1981-08-05
DE3166657D1 (en) 1984-11-22
EP0033162A3 (en) 1981-08-19

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