BE886979A - Sonnerie de tonalite electronique - Google Patents

Sonnerie de tonalite electronique

Info

Publication number
BE886979A
BE886979A BE2/58939A BE2058939A BE886979A BE 886979 A BE886979 A BE 886979A BE 2/58939 A BE2/58939 A BE 2/58939A BE 2058939 A BE2058939 A BE 2058939A BE 886979 A BE886979 A BE 886979A
Authority
BE
Belgium
Prior art keywords
electronic tone
tone ringer
ringer
electronic
tone
Prior art date
Application number
BE2/58939A
Other languages
English (en)
Inventor
J D Sublette
W Stobbs
Original Assignee
Gte Automatic Electric Lab 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 Gte Automatic Electric Lab Inc filed Critical Gte Automatic Electric Lab Inc
Publication of BE886979A publication Critical patent/BE886979A/fr

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)
BE2/58939A 1980-04-15 1981-01-07 Sonnerie de tonalite electronique BE886979A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/140,525 US4309574A (en) 1980-04-15 1980-04-15 Electronic tone ringer

Publications (1)

Publication Number Publication Date
BE886979A true BE886979A (fr) 1981-05-04

Family

ID=22491644

Family Applications (1)

Application Number Title Priority Date Filing Date
BE2/58939A BE886979A (fr) 1980-04-15 1981-01-07 Sonnerie de tonalite electronique

Country Status (6)

Country Link
US (1) US4309574A (fr)
JP (1) JPS572150A (fr)
AU (1) AU543339B2 (fr)
BE (1) BE886979A (fr)
CA (1) CA1149090A (fr)
IT (1) IT1137135B (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4477697A (en) * 1982-11-22 1984-10-16 At&T Bell Laboratories Method and circuitry for encoding telephone ringing signals
US4508937A (en) * 1983-02-28 1985-04-02 At&T Information Systems Inc. Method and circuitry for encoding telephone ringing signals
DE3538088C2 (de) * 1985-10-25 1993-11-11 Siemens Ag Schaltungsanordnung für einen Überspannungsschutz in elektronischen Fernsprechstationen
FR2693335B1 (fr) * 1992-07-02 1994-08-05 Matra Communication Circuit de sonnerie notamment pour poste telephonique.
US5795440A (en) * 1993-12-20 1998-08-18 The Procter & Gamble Company Method of making wet pressed tissue paper
US5776307A (en) * 1993-12-20 1998-07-07 The Procter & Gamble Company Method of making wet pressed tissue paper with felts having selected permeabilities
GB2289187B (en) * 1994-04-26 1999-01-20 Motorola Inc Telephone line interface circuit
US5526418A (en) * 1994-10-24 1996-06-11 Acer Peripherals Ringer circuit
US5830316A (en) * 1997-05-16 1998-11-03 The Procter & Gamble Company Method of wet pressing tissue paper with three felt layers
US7994759B2 (en) * 2009-04-13 2011-08-09 Himax Technologies Limited System and method for driving a power supply device in an initial activation stage

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1195360B (de) * 1963-10-15 1965-06-24 Merk Ag Telefonbau Friedrich Schaltungsanordnung zur Verstaerkung tonfrequenter Anrufsignale in Teilnehmer-stationen von Fernsprechanlagen
DE2063624C3 (de) * 1970-12-23 1974-01-24 Krone Gmbh, 1000 Berlin Elektronischer Wecker für Fernsprechapparate
US3965307A (en) * 1974-05-28 1976-06-22 Gte Automatic Electric Laboratories Incorporated Electronic tone ringer
US4214131A (en) * 1978-12-18 1980-07-22 Floyd Bell Associates Inc. Electronic audio signalling device for telephones

Also Published As

Publication number Publication date
IT1137135B (it) 1986-09-03
CA1149090A (fr) 1983-06-28
AU6528880A (en) 1981-10-22
AU543339B2 (en) 1985-04-18
JPS572150A (en) 1982-01-07
US4309574A (en) 1982-01-05
IT8121175A0 (it) 1981-04-15

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Legal Events

Date Code Title Description
RE Patent lapsed

Owner name: GTE AUTOMATIC ELECTRIC LABORATORIES INC.

Effective date: 19900131