RO88643A - INSTALLATION FOR LIMITATION OF THE NUMBER SELECTION OF A TELEPHONE DEVICE - Google Patents

INSTALLATION FOR LIMITATION OF THE NUMBER SELECTION OF A TELEPHONE DEVICE

Info

Publication number
RO88643A
RO88643A RO84113465A RO11346584A RO88643A RO 88643 A RO88643 A RO 88643A RO 84113465 A RO84113465 A RO 84113465A RO 11346584 A RO11346584 A RO 11346584A RO 88643 A RO88643 A RO 88643A
Authority
RO
Romania
Prior art keywords
limitation
installation
telephone device
number selection
selection
Prior art date
Application number
RO84113465A
Other languages
French (fr)
Romanian (ro)
Inventor
Kiril N Popov
Original Assignee
Sofiiska Telegrafna I Telefonna Stanzia,Bg
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 Telefonna Stanzia,Bg filed Critical Sofiiska Telegrafna I Telefonna Stanzia,Bg
Publication of RO88643A publication Critical patent/RO88643A/en

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)
  • Telephone Function (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
RO84113465A 1983-02-02 1984-01-31 INSTALLATION FOR LIMITATION OF THE NUMBER SELECTION OF A TELEPHONE DEVICE RO88643A (en)

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
RO88643A true RO88643A (en) 1986-02-28

Family

ID=3911702

Family Applications (1)

Application Number Title Priority Date Filing Date
RO84113465A RO88643A (en) 1983-02-02 1984-01-31 INSTALLATION FOR LIMITATION OF THE NUMBER SELECTION OF A TELEPHONE DEVICE

Country Status (7)

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

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1268215B (en) * 1965-11-26 1968-05-16 Christos Stathacopoulos Device on a telephone set for locking the set for self-dialing calls
DE2341246A1 (en) * 1973-08-16 1975-02-20 Hagenuk Neufeldt Kuhnke Gmbh Electronic dialling monitor - prevents dialling of unauthorised numbers especially certain first and second figures
SE7411340L (en) * 1974-01-19 1975-07-21 Masayuki Nagakura
DE3227763A1 (en) * 1982-07-24 1984-02-02 Krone Gmbh, 1000 Berlin Device for optional release or barring of a trunk dialling telephone number

Also Published As

Publication number Publication date
HU189034B (en) 1986-06-30
DE3403304A1 (en) 1984-08-16
BG37515A1 (en) 1985-06-14
PL246020A1 (en) 1984-11-08
PL142207B1 (en) 1987-09-30
HUT36310A (en) 1985-08-28
DD252109A3 (en) 1987-12-09
CS256919B1 (en) 1988-04-15

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