NO773519L - Anordning ved akustiske signalorgan i telefonapparater - Google Patents

Anordning ved akustiske signalorgan i telefonapparater

Info

Publication number
NO773519L
NO773519L NO773519A NO773519A NO773519L NO 773519 L NO773519 L NO 773519L NO 773519 A NO773519 A NO 773519A NO 773519 A NO773519 A NO 773519A NO 773519 L NO773519 L NO 773519L
Authority
NO
Norway
Prior art keywords
acoustic signal
telephone devices
signal bodies
bodies
telephone
Prior art date
Application number
NO773519A
Other languages
English (en)
Other versions
NO139716B (no
NO139716C (no
Inventor
Sten Evert Magnusson
Original Assignee
Ericsson Telefon Ab L M
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 Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Publication of NO773519L publication Critical patent/NO773519L/no
Publication of NO139716B publication Critical patent/NO139716B/no
Publication of NO139716C publication Critical patent/NO139716C/no

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)
  • Telephone Set Structure (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
  • Telephonic Communication Services (AREA)
  • Telephone Function (AREA)
  • Devices For Supply Of Signal Current (AREA)
NO773519A 1976-10-14 1977-10-13 Anordning ved akustiske signalorgan i teleforapparater NO139716C (no)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7611406A SE397161B (sv) 1976-10-14 1976-10-14 Anordning vid akustiska signalorgan i telefonapparater

Publications (3)

Publication Number Publication Date
NO773519L true NO773519L (no) 1978-04-17
NO139716B NO139716B (no) 1979-01-15
NO139716C NO139716C (no) 1979-05-02

Family

ID=20329130

Family Applications (1)

Application Number Title Priority Date Filing Date
NO773519A NO139716C (no) 1976-10-14 1977-10-13 Anordning ved akustiske signalorgan i teleforapparater

Country Status (10)

Country Link
BE (1) BE859191A (no)
CH (1) CH623694A5 (no)
DE (1) DE2742748A1 (no)
DK (1) DK455577A (no)
ES (1) ES463052A1 (no)
FR (1) FR2368185A1 (no)
IT (1) IT1087777B (no)
NL (1) NL7710303A (no)
NO (1) NO139716C (no)
SE (1) SE397161B (no)

Also Published As

Publication number Publication date
SE397161B (sv) 1977-10-17
NL7710303A (nl) 1978-04-18
IT1087777B (it) 1985-06-04
FR2368185A1 (fr) 1978-05-12
DE2742748A1 (de) 1978-04-20
NO139716B (no) 1979-01-15
DK455577A (da) 1978-04-15
ES463052A1 (es) 1978-07-01
NO139716C (no) 1979-05-02
BE859191A (fr) 1978-01-16
CH623694A5 (en) 1981-06-15

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