BE635147A - - Google Patents

Info

Publication number
BE635147A
BE635147A BE635147DA BE635147A BE 635147 A BE635147 A BE 635147A BE 635147D A BE635147D A BE 635147DA BE 635147 A BE635147 A BE 635147A
Authority
BE
Belgium
Application number
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.)
Publication of BE635147A publication Critical patent/BE635147A/xx

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers
    • 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 Function (AREA)
BE635147D 1962-07-21 BE635147A (xx)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEST19507A DE1171018B (de) 1962-07-21 1962-07-21 Schaltungsanordnung fuer Handfernsprecher mit umschaltbarem Transistorverstaerker

Publications (1)

Publication Number Publication Date
BE635147A true BE635147A (xx)

Family

ID=7458227

Family Applications (1)

Application Number Title Priority Date Filing Date
BE635147D BE635147A (xx) 1962-07-21

Country Status (2)

Country Link
BE (1) BE635147A (xx)
DE (1) DE1171018B (xx)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2548159C2 (de) * 1975-10-28 1983-05-11 Standard Elektrik Lorenz Ag, 7000 Stuttgart Schaltungsanordnung für den akustischen Ruf in einer Chef- und Sekretärfernsprechanlage

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1108274B (de) * 1959-11-06 1961-06-08 Standard Elektrik Lorenz Ag Schaltungsanordnung fuer Handfernsprecher mit eingebautem Transistorverstaerker
DE1129542B (de) * 1961-03-15 1962-05-17 Standard Elektrik Lorenz Ag Schaltungsanordnung fuer Handfernsprecher mit elektronischer Rufeinrichtung und mit Sprech- und Ruftaste

Also Published As

Publication number Publication date
DE1171018B (de) 1964-05-27

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