FR2259505A1 - - Google Patents

Info

Publication number
FR2259505A1
FR2259505A1 FR7502350A FR7502350A FR2259505A1 FR 2259505 A1 FR2259505 A1 FR 2259505A1 FR 7502350 A FR7502350 A FR 7502350A FR 7502350 A FR7502350 A FR 7502350A FR 2259505 A1 FR2259505 A1 FR 2259505A1
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.)
Granted
Application number
FR7502350A
Other versions
FR2259505B1 (fr
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Italtel SpA
Original Assignee
Societa Italiana Telecomunicazioni Siemens SpA
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 Societa Italiana Telecomunicazioni Siemens SpA filed Critical Societa Italiana Telecomunicazioni Siemens SpA
Publication of FR2259505A1 publication Critical patent/FR2259505A1/fr
Application granted granted Critical
Publication of FR2259505B1 publication Critical patent/FR2259505B1/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/18—Electrical details
    • H04Q1/30—Signalling arrangements; Manipulation of signalling currents
    • H04Q1/50—Conversion between different kinds of signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Telephonic Communication Services (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
FR7502350A 1974-01-29 1975-01-24 Expired FR2259505B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT19917/74A IT1012125B (it) 1974-01-29 1974-01-29 Dispositivo centralizzato di conver sione di segnali multifrequenza in segnali in corrente continua per centrali telefoniche

Publications (2)

Publication Number Publication Date
FR2259505A1 true FR2259505A1 (fr) 1975-08-22
FR2259505B1 FR2259505B1 (fr) 1979-08-03

Family

ID=11162318

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7502350A Expired FR2259505B1 (fr) 1974-01-29 1975-01-24

Country Status (8)

Country Link
US (1) US3988547A (fr)
BR (1) BR7408879A (fr)
DE (1) DE2502317A1 (fr)
FR (1) FR2259505B1 (fr)
GB (1) GB1491941A (fr)
IT (1) IT1012125B (fr)
NL (1) NL7413056A (fr)
SE (1) SE408679B (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0353739B1 (fr) * 1988-08-03 1995-11-08 Matsushita Electric Industrial Co., Ltd. Distributeur d'appel téléphonique

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3291913A (en) * 1963-05-17 1966-12-13 Bell Telephone Labor Inc Telephone system signal converter
US3453391A (en) * 1966-05-11 1969-07-01 American Telephone & Telegraph Signal converter circuit

Also Published As

Publication number Publication date
US3988547A (en) 1976-10-26
DE2502317A1 (de) 1975-07-31
NL7413056A (nl) 1975-07-31
IT1012125B (it) 1977-03-10
GB1491941A (en) 1977-11-16
BR7408879A (pt) 1976-05-04
SE408679B (sv) 1979-06-25
FR2259505B1 (fr) 1979-08-03
SE7500889L (fr) 1975-07-30

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Legal Events

Date Code Title Description
ST Notification of lapse