SE7812930L - Nodropsanleggning - Google Patents

Nodropsanleggning

Info

Publication number
SE7812930L
SE7812930L SE7812930A SE7812930A SE7812930L SE 7812930 L SE7812930 L SE 7812930L SE 7812930 A SE7812930 A SE 7812930A SE 7812930 A SE7812930 A SE 7812930A SE 7812930 L SE7812930 L SE 7812930L
Authority
SE
Sweden
Prior art keywords
nodrops
facility
nodrops facility
Prior art date
Application number
SE7812930A
Other languages
English (en)
Other versions
SE437435B (sv
Inventor
D Neumann
W Herrmann
G Koenigsmann
Original Assignee
Neumann Elektronik 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 Neumann Elektronik Gmbh filed Critical Neumann Elektronik Gmbh
Publication of SE7812930L publication Critical patent/SE7812930L/sv
Publication of SE437435B publication Critical patent/SE437435B/sv

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/68—Circuit arrangements for preventing eavesdropping
    • H04M1/70—Lock-out or secrecy arrangements in party-line systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M13/00—Party-line systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/16—Automatic or semi-automatic exchanges with lock-out or secrecy provision in party-line systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q5/00—Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange
    • H04Q5/02—Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange with direct connection for all subscribers, i.e. party-line systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Alarm Systems (AREA)
SE7812930A 1977-12-29 1978-12-15 Nodanropsanleggning SE437435B (sv)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2758689A DE2758689C3 (de) 1977-12-29 1977-12-29 Notrufanlage

Publications (2)

Publication Number Publication Date
SE7812930L true SE7812930L (sv) 1979-06-30
SE437435B SE437435B (sv) 1985-02-25

Family

ID=6027623

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7812930A SE437435B (sv) 1977-12-29 1978-12-15 Nodanropsanleggning

Country Status (4)

Country Link
AT (1) AT370933B (sv)
CH (1) CH640071A5 (sv)
DE (1) DE2758689C3 (sv)
SE (1) SE437435B (sv)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2949513C2 (de) * 1979-12-08 1983-12-22 Neumann Elektronik GmbH, 4330 Mülheim Notrufanlage
DE3024494C2 (de) * 1980-06-28 1982-05-19 Neumann Elektronik GmbH, 4330 Mülheim Prüfeinrichtung für eine Notrufteilnehmerstation

Also Published As

Publication number Publication date
CH640071A5 (en) 1983-12-15
DE2758689B2 (de) 1980-05-29
ATA662178A (de) 1982-09-15
AT370933B (de) 1983-05-10
DE2758689C3 (de) 1981-02-12
SE437435B (sv) 1985-02-25
DE2758689A1 (de) 1979-07-05

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