DE271579C - - Google Patents

Info

Publication number
DE271579C
DE271579C DENDAT271579D DE271579DA DE271579C DE 271579 C DE271579 C DE 271579C DE NDAT271579 D DENDAT271579 D DE NDAT271579D DE 271579D A DE271579D A DE 271579DA DE 271579 C DE271579 C DE 271579C
Authority
DE
Germany
Prior art keywords
station
wire
loudspeaker
microphone
circuit
Prior art date
Legal status (The legal status 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 status listed.)
Active
Application number
DENDAT271579D
Other languages
German (de)
English (en)
Publication of DE271579C publication Critical patent/DE271579C/de
Active legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/002—Arrangements for interconnection not involving centralised switching with subscriber controlled access to a line, i.e. key telephone systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
DENDAT271579D Active DE271579C (enrdf_load_stackoverflow)

Publications (1)

Publication Number Publication Date
DE271579C true DE271579C (enrdf_load_stackoverflow)

Family

ID=528221

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT271579D Active DE271579C (enrdf_load_stackoverflow)

Country Status (1)

Country Link
DE (1) DE271579C (enrdf_load_stackoverflow)

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