CS256918B1 - Device for dialling's limitation with telephone set - Google Patents

Device for dialling's limitation with telephone set Download PDF

Info

Publication number
CS256918B1
CS256918B1 CS86384A CS86384A CS256918B1 CS 256918 B1 CS256918 B1 CS 256918B1 CS 86384 A CS86384 A CS 86384A CS 86384 A CS86384 A CS 86384A CS 256918 B1 CS256918 B1 CS 256918B1
Authority
CS
Czechoslovakia
Prior art keywords
contact
magnetically controlled
foam
coil
κοητβκτβ
Prior art date
Application number
CS86384A
Other languages
Czech (cs)
English (en)
Inventor
Naumov K Popov
Original Assignee
Naumov K Popov
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 Naumov K Popov filed Critical Naumov K Popov
Publication of CS256918B1 publication Critical patent/CS256918B1/cs

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)
  • Structure Of Telephone Exchanges (AREA)
  • Telephonic Communication Services (AREA)
  • Telephone Set Structure (AREA)
CS86384A 1983-03-14 1984-02-07 Device for dialling's limitation with telephone set CS256918B1 (en)

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
CS256918B1 true CS256918B1 (en) 1988-04-15

Family

ID=3911892

Family Applications (1)

Application Number Title Priority Date Filing Date
CS86384A CS256918B1 (en) 1983-03-14 1984-02-07 Device for dialling's limitation with telephone set

Country Status (7)

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

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

Also Published As

Publication number Publication date
PL142351B1 (en) 1987-10-31
DD252110A3 (de) 1987-12-09
BG37516A1 (en) 1985-06-14
PL246599A1 (en) 1984-10-22
HU188613B (en) 1986-04-28
RO89332A (ro) 1986-07-30
DE3407085A1 (de) 1984-09-20
HUT35888A (en) 1985-07-29

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