IT8548359A0 - PROCEDURE FOR GENERATING AN ACOUSTIC CALL SIGNAL - Google Patents

PROCEDURE FOR GENERATING AN ACOUSTIC CALL SIGNAL

Info

Publication number
IT8548359A0
IT8548359A0 IT8548359A IT4835985A IT8548359A0 IT 8548359 A0 IT8548359 A0 IT 8548359A0 IT 8548359 A IT8548359 A IT 8548359A IT 4835985 A IT4835985 A IT 4835985A IT 8548359 A0 IT8548359 A0 IT 8548359A0
Authority
IT
Italy
Prior art keywords
procedure
generating
call signal
acoustic call
acoustic
Prior art date
Application number
IT8548359A
Other languages
Italian (it)
Other versions
IT1182066B (en
Inventor
Gunter Willi
Original Assignee
Telefonbau & Normalzeit Gmbh
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 Telefonbau & Normalzeit Gmbh filed Critical Telefonbau & Normalzeit Gmbh
Publication of IT8548359A0 publication Critical patent/IT8548359A0/en
Application granted granted Critical
Publication of IT1182066B publication Critical patent/IT1182066B/en

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)
  • Telephonic Communication Services (AREA)
IT48359/85A 1984-07-21 1985-07-26 PROCEDURE FOR GENERATING AN AUDIO CALL SIGNAL IT1182066B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3426915A DE3426915C2 (en) 1984-07-21 1984-07-21 Method for generating an acoustic call signal

Publications (2)

Publication Number Publication Date
IT8548359A0 true IT8548359A0 (en) 1985-07-26
IT1182066B IT1182066B (en) 1987-09-30

Family

ID=6241212

Family Applications (1)

Application Number Title Priority Date Filing Date
IT48359/85A IT1182066B (en) 1984-07-21 1985-07-26 PROCEDURE FOR GENERATING AN AUDIO CALL SIGNAL

Country Status (2)

Country Link
DE (1) DE3426915C2 (en)
IT (1) IT1182066B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1287417C (en) * 1988-03-04 1991-08-06 Guy Charles Quesnel Digital composite tone alerting
DE19620624C2 (en) * 1996-05-22 2002-10-24 Siemens Ag Communication terminal with device for acoustic signaling of a switching status
WO2002048997A2 (en) * 2000-12-13 2002-06-20 Koninklijke Philips Electronics N.V. Electroacoustic apparatus having ringing signal generation means capable of producing a subjective bass perception

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2520532B2 (en) * 1975-05-07 1978-09-21 Siemens Ag, 1000 Berlin Und 8000 Muenchen Circuit arrangement for a ringing device for telecommunication systems, in particular telephone systems
DE2816782C3 (en) * 1978-04-18 1980-12-18 Siemens Ag, 1000 Berlin Und 8000 Muenchen Circuit arrangement for generating an acoustic call signal in subscriber stations of telecommunication systems, in particular telephone systems
DE2924752C2 (en) * 1979-06-20 1984-02-02 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Tone generator for generating signaling frequencies in a DTMF telephone set

Also Published As

Publication number Publication date
IT1182066B (en) 1987-09-30
DE3426915A1 (en) 1986-01-30
DE3426915C2 (en) 1987-05-14

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