DD252109A3 - Einrichtung fuer die nummernwahlbegrenzung eines fernsprechapparats - Google Patents

Einrichtung fuer die nummernwahlbegrenzung eines fernsprechapparats Download PDF

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Publication number
DD252109A3
DD252109A3 DD25965884A DD25965884A DD252109A3 DD 252109 A3 DD252109 A3 DD 252109A3 DD 25965884 A DD25965884 A DD 25965884A DD 25965884 A DD25965884 A DD 25965884A DD 252109 A3 DD252109 A3 DD 252109A3
Authority
DD
German Democratic Republic
Prior art keywords
pejie
telephone
npm
ero
possibility
Prior art date
Application number
DD25965884A
Other languages
German (de)
English (en)
Inventor
Kiril N Popov
Original Assignee
Sofiiska Telegrafna I Telefonn
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 Sofiiska Telegrafna I Telefonn filed Critical Sofiiska Telegrafna I Telefonn
Publication of DD252109A3 publication Critical patent/DD252109A3/de

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/66—Substation equipment, e.g. for use by subscribers with means for preventing unauthorised or fraudulent calling
    • H04M1/677—Preventing the dialling or sending of predetermined telephone numbers or selected types of telephone numbers, e.g. long distance numbers

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Signal Processing (AREA)
  • Telephone Function (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
DD25965884A 1983-02-02 1984-01-27 Einrichtung fuer die nummernwahlbegrenzung eines fernsprechapparats DD252109A3 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BG5955583A BG37515A1 (en) 1983-02-02 1983-02-02 Device for limiting telephone dial selection

Publications (1)

Publication Number Publication Date
DD252109A3 true DD252109A3 (de) 1987-12-09

Family

ID=3911702

Family Applications (1)

Application Number Title Priority Date Filing Date
DD25965884A DD252109A3 (de) 1983-02-02 1984-01-27 Einrichtung fuer die nummernwahlbegrenzung eines fernsprechapparats

Country Status (7)

Country Link
BG (1) BG37515A1 (cs)
CS (1) CS256919B1 (cs)
DD (1) DD252109A3 (cs)
DE (1) DE3403304A1 (cs)
HU (1) HU189034B (cs)
PL (1) PL142207B1 (cs)
RO (1) RO88643A (cs)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1268215B (de) * 1965-11-26 1968-05-16 Christos Stathacopoulos Vorrichtung an einem Fernsprechapparat zum Sperren des Apparates fuer Selbstwaehlferngespraeche
DE2341246A1 (de) * 1973-08-16 1975-02-20 Hagenuk Neufeldt Kuhnke Gmbh Elektronische sperreinrichtung fuer nummernschalterwahl zur verhinderung der wahl unerwuenschter waehlziffern
SE7411340L (cs) * 1974-01-19 1975-07-21 Masayuki Nagakura
DE3227763A1 (de) * 1982-07-24 1984-02-02 Krone Gmbh, 1000 Berlin Einrichtung zur wahlweisen freigabe oder sperrung einer fernwahl-rufnummer

Also Published As

Publication number Publication date
HU189034B (en) 1986-06-30
DE3403304A1 (de) 1984-08-16
RO88643A (ro) 1986-02-28
BG37515A1 (en) 1985-06-14
PL246020A1 (en) 1984-11-08
PL142207B1 (en) 1987-09-30
HUT36310A (en) 1985-08-28
CS256919B1 (en) 1988-04-15

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Legal Events

Date Code Title Description
ENJ Ceased due to non-payment of renewal fee
ENJ Ceased due to non-payment of renewal fee