RO89332A - DEVICE FOR LIMITING THE SELECTION OF NUMBERS OF A TELEPHONE DEVICE - Google Patents

DEVICE FOR LIMITING THE SELECTION OF NUMBERS OF A TELEPHONE DEVICE

Info

Publication number
RO89332A
RO89332A RO84113898A RO11389884A RO89332A RO 89332 A RO89332 A RO 89332A RO 84113898 A RO84113898 A RO 84113898A RO 11389884 A RO11389884 A RO 11389884A RO 89332 A RO89332 A RO 89332A
Authority
RO
Romania
Prior art keywords
numbers
selection
limiting
telephone
telephone device
Prior art date
Application number
RO84113898A
Other languages
French (fr)
Romanian (ro)
Inventor
Kiril N Popov
Original Assignee
Sofiiska Telegrafina 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 Telegrafina Telefonna Stanzia,Bg filed Critical Sofiiska Telegrafina Telefonna Stanzia,Bg
Publication of RO89332A publication Critical patent/RO89332A/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)
  • Mechanical Treatment Of Semiconductor (AREA)
  • Telephone Set Structure (AREA)
  • Structure Of Telephone Exchanges (AREA)
  • Telephonic Communication Services (AREA)
RO84113898A 1983-03-14 1984-03-12 DEVICE FOR LIMITING THE SELECTION OF NUMBERS OF A TELEPHONE DEVICE RO89332A (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
RO89332A true RO89332A (en) 1986-07-30

Family

ID=3911892

Family Applications (1)

Application Number Title Priority Date Filing Date
RO84113898A RO89332A (en) 1983-03-14 1984-03-12 DEVICE FOR LIMITING THE SELECTION OF NUMBERS OF A TELEPHONE DEVICE

Country Status (7)

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

Family Cites Families (3)

* 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

Also Published As

Publication number Publication date
HUT35888A (en) 1985-07-29
DE3407085A1 (en) 1984-09-20
PL142351B1 (en) 1987-10-31
PL246599A1 (en) 1984-10-22
BG37516A1 (en) 1985-06-14
HU188613B (en) 1986-04-28
DD252110A3 (en) 1987-12-09
CS256918B1 (en) 1988-04-15

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