CH544473A - Signaleinrichtung zur Erzeugung akustischer Signale - Google Patents

Signaleinrichtung zur Erzeugung akustischer Signale

Info

Publication number
CH544473A
CH544473A CH70972A CH70972A CH544473A CH 544473 A CH544473 A CH 544473A CH 70972 A CH70972 A CH 70972A CH 70972 A CH70972 A CH 70972A CH 544473 A CH544473 A CH 544473A
Authority
CH
Switzerland
Prior art keywords
acoustic signals
signaling device
generating acoustic
generating
signaling
Prior art date
Application number
CH70972A
Other languages
German (de)
English (en)
Inventor
Francis Mcalonie Robert
Otto Sautter Helmuth
Carlaw Trimble David
Original Assignee
Western Electric Co
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 filed Critical Western Electric Co
Publication of CH544473A publication Critical patent/CH544473A/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
    • H04M19/04—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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)
CH70972A 1971-01-18 1972-01-18 Signaleinrichtung zur Erzeugung akustischer Signale CH544473A (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US10732971A 1971-01-18 1971-01-18

Publications (1)

Publication Number Publication Date
CH544473A true CH544473A (de) 1973-11-15

Family

ID=22316077

Family Applications (1)

Application Number Title Priority Date Filing Date
CH70972A CH544473A (de) 1971-01-18 1972-01-18 Signaleinrichtung zur Erzeugung akustischer Signale

Country Status (9)

Country Link
JP (1) JPS5738065B1 (it)
BE (1) BE778121A (it)
CA (3) CA952634A (it)
CH (1) CH544473A (it)
DE (1) DE2201764C3 (it)
ES (1) ES399297A1 (it)
FR (1) FR2122468B1 (it)
GB (1) GB1372754A (it)
IT (1) IT948859B (it)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5076707U (it) * 1973-11-14 1975-07-03
JPS5180105A (it) * 1975-01-09 1976-07-13 Nakayo Telecommunications
JPS526005A (en) * 1975-07-04 1977-01-18 Oki Electric Ind Co Ltd Tone ringer receiving system
CH619332A5 (en) * 1976-02-02 1980-09-15 Intertel Ii Inc Signal-controlled system for optional blocking or unblocking of a transmission line, and use of the system
JPS5547019A (en) * 1978-09-27 1980-04-02 Sanden Corp Sound insulation device for electromagnetic clutch
JPS56501185A (it) * 1979-08-20 1981-08-20
GB2121648B (en) * 1982-05-24 1986-12-03 Tad Avanti Ring detector and telephone line monitoring system for telephone answering unit
JPS6216669U (it) * 1985-07-12 1987-01-31
DE3535868C1 (en) * 1985-10-08 1987-05-21 Texas Instruments Deutschland Call signal recognition circuitry for telephone subscriber's appts. - has current sensor between rectifier and diode supplying detector sensing frequency
DE4212858A1 (de) * 1992-04-16 1993-10-21 Siemens Ag Tonrufschaltung

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2951910A (en) * 1958-01-14 1960-09-06 North Electric Co Substation signalling device
US3210479A (en) * 1962-08-30 1965-10-05 Automatic Elect Lab Voice-frequency selective signalling arrangement
FR1444467A (fr) * 1964-08-25 1966-07-01 Sits Soc It Telecom Siemens Ensemble d'organes formant une sonnerie à note variable, spécialement pour poste téléphonique d'abonné
US3508012A (en) * 1967-11-24 1970-04-21 Bell Telephone Labor Inc Compatible tone ringer

Also Published As

Publication number Publication date
CA939090A (en) 1973-12-25
DE2201764C3 (de) 1981-10-08
JPS4715005A (it) 1972-08-17
IT948859B (it) 1973-06-11
JPS5738065B1 (it) 1982-08-13
DE2201764A1 (de) 1972-08-03
ES399297A1 (es) 1975-05-01
FR2122468B1 (it) 1975-08-29
BE778121A (fr) 1972-05-16
GB1372754A (en) 1974-11-06
CA952634A (en) 1974-08-06
FR2122468A1 (it) 1972-09-01
DE2201764B2 (de) 1980-12-18
CA939089A (en) 1973-12-25

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Legal Events

Date Code Title Description
PL Patent ceased