AT325111B - Einrichtung zur sperrung der fernwahl und der gebührenpflichtigen dienste bei teilnehmerfernsprechern - Google Patents

Einrichtung zur sperrung der fernwahl und der gebührenpflichtigen dienste bei teilnehmerfernsprechern

Info

Publication number
AT325111B
AT325111B AT673371A AT673371A AT325111B AT 325111 B AT325111 B AT 325111B AT 673371 A AT673371 A AT 673371A AT 673371 A AT673371 A AT 673371A AT 325111 B AT325111 B AT 325111B
Authority
AT
Austria
Prior art keywords
subscriber telephones
block remote
remote dialing
charged services
services
Prior art date
Application number
AT673371A
Other languages
English (en)
Inventor
Luigi Piacente
Giovanni Gandolfi
Original Assignee
Sits Soc It Telecom Siemens
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 Sits Soc It Telecom Siemens filed Critical Sits Soc It Telecom Siemens
Application granted granted Critical
Publication of AT325111B publication Critical patent/AT325111B/de

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)
  • Telephonic Communication Services (AREA)
  • Devices For Supply Of Signal Current (AREA)
AT673371A 1970-10-06 1971-08-02 Einrichtung zur sperrung der fernwahl und der gebührenpflichtigen dienste bei teilnehmerfernsprechern AT325111B (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT3063770 1970-10-06

Publications (1)

Publication Number Publication Date
AT325111B true AT325111B (de) 1975-10-10

Family

ID=11230431

Family Applications (1)

Application Number Title Priority Date Filing Date
AT673371A AT325111B (de) 1970-10-06 1971-08-02 Einrichtung zur sperrung der fernwahl und der gebührenpflichtigen dienste bei teilnehmerfernsprechern

Country Status (7)

Country Link
US (1) US3749847A (de)
AT (1) AT325111B (de)
CH (1) CH537677A (de)
DE (1) DE2146120A1 (de)
FR (1) FR2083287A5 (de)
GB (1) GB1360038A (de)
NL (1) NL7113553A (de)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES403458A1 (es) * 1971-12-17 1975-05-01 Sits Soc It Telecom Siemens Circuito de bloqueo a la teleseleccion y a los servicios tasados en general para aparatos telefonicos de usuario.
US3872260A (en) * 1972-08-10 1975-03-18 Telephonic Equipment Corp Toll call prohibitor
FR2291656A1 (fr) * 1974-11-14 1976-06-11 Telic Clavier d'appel
US4124781A (en) * 1977-08-31 1978-11-07 Akzona Incorporated Telephone toll restrictor
US4358640A (en) 1980-11-25 1982-11-09 Murray Leonard Q Telephone security device
DE3227763A1 (de) * 1982-07-24 1984-02-02 Krone Gmbh, 1000 Berlin Einrichtung zur wahlweisen freigabe oder sperrung einer fernwahl-rufnummer
GB8701723D0 (en) * 1987-01-27 1987-03-04 Rainer M G Call barring apparatus
US7068776B1 (en) * 2000-04-19 2006-06-27 Gamble Oliver W Method and system for routing calls to desire discount telephone services

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1649494A (en) * 1921-07-06 1927-11-15 Automatic Electric Inc Automatic telephone system
US3569634A (en) * 1967-06-27 1971-03-09 Claudio Amadasi Blocking circuit for telephone apparatus
US3553382A (en) * 1967-08-04 1971-01-05 Edward R Edelberg Toll call signalling and diverting system

Also Published As

Publication number Publication date
GB1360038A (en) 1974-07-17
US3749847A (en) 1973-07-31
FR2083287A5 (de) 1971-12-10
DE2146120A1 (de) 1972-04-13
NL7113553A (de) 1972-04-10
CH537677A (it) 1973-05-31

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Legal Events

Date Code Title Description
ELJ Ceased due to non-payment of the annual fee