DD252110A3 - Einrichtung fuer die nummernwahlbegrenzung eines fernsprechapparats - Google Patents

Einrichtung fuer die nummernwahlbegrenzung eines fernsprechapparats

Info

Publication number
DD252110A3
DD252110A3 DD25965784A DD25965784A DD252110A3 DD 252110 A3 DD252110 A3 DD 252110A3 DD 25965784 A DD25965784 A DD 25965784A DD 25965784 A DD25965784 A DD 25965784A DD 252110 A3 DD252110 A3 DD 252110A3
Authority
DD
German Democratic Republic
Prior art keywords
telephone apparatus
number selection
selection limitation
limitation
telephone
Prior art date
Application number
DD25965784A
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 DD252110A3 publication Critical patent/DD252110A3/xx

Links

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)
  • Mechanical Treatment Of Semiconductor (AREA)
  • Telephone Set Structure (AREA)
  • Structure Of Telephone Exchanges (AREA)
  • Telephonic Communication Services (AREA)
DD25965784A 1983-03-14 1984-01-27 Einrichtung fuer die nummernwahlbegrenzung eines fernsprechapparats DD252110A3 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BG6010583A BG37516A1 (en) 1983-03-14 1983-03-14 Device for limiting telephone dial selection

Publications (1)

Publication Number Publication Date
DD252110A3 true DD252110A3 (de) 1987-12-09

Family

ID=3911892

Family Applications (1)

Application Number Title Priority Date Filing Date
DD25965784A DD252110A3 (de) 1983-03-14 1984-01-27 Einrichtung fuer die nummernwahlbegrenzung eines fernsprechapparats

Country Status (7)

Country Link
BG (1) BG37516A1 (fr)
CS (1) CS256918B1 (fr)
DD (1) DD252110A3 (fr)
DE (1) DE3407085A1 (fr)
HU (1) HU188613B (fr)
PL (1) PL142351B1 (fr)
RO (1) RO89332A (fr)

Family Cites Families (3)

* 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 (fr) * 1974-01-19 1975-07-21 Masayuki Nagakura

Also Published As

Publication number Publication date
HUT35888A (en) 1985-07-29
DE3407085A1 (de) 1984-09-20
PL142351B1 (en) 1987-10-31
RO89332A (fr) 1986-07-30
PL246599A1 (en) 1984-10-22
BG37516A1 (en) 1985-06-14
HU188613B (en) 1986-04-28
CS256918B1 (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