CH541263A - Dispositivo di blocco alla teleselezione e ai servizi tassati per apparecchi telefonici allacciati a centralini telefonici privati - Google Patents

Dispositivo di blocco alla teleselezione e ai servizi tassati per apparecchi telefonici allacciati a centralini telefonici privati

Info

Publication number
CH541263A
CH541263A CH734971A CH734971A CH541263A CH 541263 A CH541263 A CH 541263A CH 734971 A CH734971 A CH 734971A CH 734971 A CH734971 A CH 734971A CH 541263 A CH541263 A CH 541263A
Authority
CH
Switzerland
Prior art keywords
taxed
services
blocking device
telephone
sets connected
Prior art date
Application number
CH734971A
Other languages
English (en)
Inventor
Piacente Luigi
Gandolfi Giovanni
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
Publication of CH541263A publication Critical patent/CH541263A/it

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/38—Graded-service arrangements, i.e. some subscribers prevented from establishing certain connections

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
  • Interface Circuits In Exchanges (AREA)
CH734971A 1970-11-09 1971-05-19 Dispositivo di blocco alla teleselezione e ai servizi tassati per apparecchi telefonici allacciati a centralini telefonici privati CH541263A (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT3148370 1970-11-09

Publications (1)

Publication Number Publication Date
CH541263A true CH541263A (it) 1973-08-31

Family

ID=11233669

Family Applications (1)

Application Number Title Priority Date Filing Date
CH734971A CH541263A (it) 1970-11-09 1971-05-19 Dispositivo di blocco alla teleselezione e ai servizi tassati per apparecchi telefonici allacciati a centralini telefonici privati

Country Status (7)

Country Link
US (1) US3798381A (it)
AT (1) AT312696B (it)
CH (1) CH541263A (it)
DE (1) DE2146109C3 (it)
FR (1) FR2112896A5 (it)
GB (1) GB1371909A (it)
NL (1) NL7115224A (it)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BR7400666D0 (pt) * 1973-01-31 1974-11-05 Iwatsu Electric Co Ltd Dispositivo para discagem de aparelho telefonico
SE373474B (it) * 1973-06-07 1975-02-03 A E Trell
US3976846A (en) * 1973-07-06 1976-08-24 Kouichi Sekiguchi Dial device for a telephone set having a function of preventing toll dialing
US4177358A (en) * 1974-09-16 1979-12-04 Mason John W Tone dial toll restrictor
JPS5383402A (en) * 1976-12-28 1978-07-22 Tamura Electric Works Ltd Dial number control system
US4336422A (en) * 1978-07-05 1982-06-22 Akzona Incorporated Toll restrictor
FR3130075B1 (fr) 2021-12-03 2023-10-27 Psa Automobiles Sa Systeme de refroidissement pour batterie solide a electrolyte polymere, procede et vehicule sur la base d’un tel systeme

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US3671677A (en) * 1970-07-23 1972-06-20 Stromberg Carlson Corp Outgoing register sender system

Also Published As

Publication number Publication date
DE2146109C3 (de) 1980-07-03
DE2146109B2 (de) 1979-10-18
FR2112896A5 (it) 1972-06-23
US3798381A (en) 1974-03-19
GB1371909A (en) 1974-10-30
AT312696B (de) 1974-01-10
NL7115224A (it) 1972-05-12
DE2146109A1 (de) 1972-05-18

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Legal Events

Date Code Title Description
PL Patent ceased