FR1581607A - - Google Patents

Info

Publication number
FR1581607A
FR1581607A FR1581607DA FR1581607A FR 1581607 A FR1581607 A FR 1581607A FR 1581607D A FR1581607D A FR 1581607DA FR 1581607 A FR1581607 A FR 1581607A
Authority
FR
France
Legal status (The legal status 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 status listed.)
Expired
Application number
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 filed Critical
Application granted granted Critical
Publication of FR1581607A publication Critical patent/FR1581607A/fr
Expired legal-status Critical Current

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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/58—Arrangements providing connection between main exchange and sub-exchange or satellite
    • H04Q3/62—Arrangements providing connection between main exchange and sub-exchange or satellite for connecting to private branch exchanges
    • H04Q3/625—Arrangements in the private branch exchange
FR1581607D 1967-06-27 1968-06-27 Expired FR1581607A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT5224467 1967-06-27

Publications (1)

Publication Number Publication Date
FR1581607A true FR1581607A (fr) 1969-09-19

Family

ID=32923002

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1581607D Expired FR1581607A (fr) 1967-06-27 1968-06-27

Country Status (5)

Country Link
US (1) US3569634A (fr)
BE (1) BE717147A (fr)
DE (1) DE1762452A1 (fr)
FR (1) FR1581607A (fr)
GB (1) GB1220958A (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA907188A (en) * 1970-04-27 1972-08-08 Ronald C. B. Smith Electronic telephone call restricting device
CH537677A (it) * 1970-10-06 1973-05-31 It Telecommunicazioni Siemens Dispositivo di blocco alla teleselezione e ai servizi tassati in generale per apparecchi telefonici d'utente
CH541263A (it) * 1970-11-09 1973-08-31 Sits Soc It Telecom Siemens Dispositivo di blocco alla teleselezione e ai servizi tassati per apparecchi telefonici allacciati a centralini telefonici privati
US3784757A (en) * 1971-06-14 1974-01-08 Information Flow Inc Limited access dialing system
US3872260A (en) * 1972-08-10 1975-03-18 Telephonic Equipment Corp Toll call prohibitor
US3851109A (en) * 1973-05-03 1974-11-26 R Downs Telephone control system
US4008379A (en) * 1975-02-14 1977-02-15 San/Bar Corporation Touch-pad to dial conversion unit
US4284851A (en) * 1979-06-29 1981-08-18 Bell Telephone Laboratories, Incorporated Arrangement for frustrating fraudulent telephone calls
DE3622712A1 (de) * 1986-07-05 1988-01-21 Neumann Elektronik Gmbh Verfahren zur sperrung einer fernsprecheinrichtung fuer abgehende gespraeche in fernsprechanlagen mit impuls- und/oder frequenzwahl sowie waehlsperre zur durchfuehrung des verfahrens
JPH1198270A (ja) * 1997-09-19 1999-04-09 Fujitsu Ltd 通信支援装置

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE522252A (fr) * 1952-08-23
US2914616A (en) * 1955-06-30 1959-11-24 Gen Telephone Lab Inc Restricted service arrangements in telephone systems

Also Published As

Publication number Publication date
GB1220958A (en) 1971-01-27
US3569634A (en) 1971-03-09
BE717147A (fr) 1968-12-02
DE1762452A1 (de) 1971-01-28

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Legal Events

Date Code Title Description
ST Notification of lapse