SE465747B - Ringsignalindikator - Google Patents

Ringsignalindikator

Info

Publication number
SE465747B
SE465747B SE9000999A SE9000999A SE465747B SE 465747 B SE465747 B SE 465747B SE 9000999 A SE9000999 A SE 9000999A SE 9000999 A SE9000999 A SE 9000999A SE 465747 B SE465747 B SE 465747B
Authority
SE
Sweden
Prior art keywords
signal
circuit
indicator
capacitor
voltage
Prior art date
Application number
SE9000999A
Other languages
English (en)
Swedish (sv)
Other versions
SE9000999L (enrdf_load_stackoverflow
SE9000999D0 (sv
Inventor
J Schakowsky
Original Assignee
Transistor Ab
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
Publication of SE9000999L publication Critical patent/SE9000999L/xx
Application filed by Transistor Ab filed Critical Transistor Ab
Priority to SE9000999A priority Critical patent/SE465747B/sv
Publication of SE9000999D0 publication Critical patent/SE9000999D0/xx
Publication of SE465747B publication Critical patent/SE465747B/sv

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/247—Telephone sets including user guidance or feature selection means facilitating their use
    • H04M1/2474—Telephone terminals specially adapted for disabled people
    • H04M1/2475—Telephone terminals specially adapted for disabled people for a hearing impaired user
    • 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)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Acoustics & Sound (AREA)
  • Otolaryngology (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Human Computer Interaction (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Telephone Function (AREA)
SE9000999A 1990-03-20 1990-03-20 Ringsignalindikator SE465747B (sv)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SE9000999A SE465747B (sv) 1990-03-20 1990-03-20 Ringsignalindikator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9000999A SE465747B (sv) 1990-03-20 1990-03-20 Ringsignalindikator

Publications (3)

Publication Number Publication Date
SE9000999L SE9000999L (enrdf_load_stackoverflow)
SE9000999D0 SE9000999D0 (sv) 1990-03-20
SE465747B true SE465747B (sv) 1991-10-21

Family

ID=20378922

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9000999A SE465747B (sv) 1990-03-20 1990-03-20 Ringsignalindikator

Country Status (1)

Country Link
SE (1) SE465747B (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
SE9000999L (enrdf_load_stackoverflow)
SE9000999D0 (sv) 1990-03-20

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