SE408679B - Anordning i en telefonvexel for omvandling av flerfrekventa signaler till likstromssignaler - Google Patents

Anordning i en telefonvexel for omvandling av flerfrekventa signaler till likstromssignaler

Info

Publication number
SE408679B
SE408679B SE7500889A SE7500889A SE408679B SE 408679 B SE408679 B SE 408679B SE 7500889 A SE7500889 A SE 7500889A SE 7500889 A SE7500889 A SE 7500889A SE 408679 B SE408679 B SE 408679B
Authority
SE
Sweden
Prior art keywords
signals
multiprequency
converting
telephone exchange
diameter
Prior art date
Application number
SE7500889A
Other languages
English (en)
Other versions
SE7500889L (sv
Inventor
E Cicognani
R Caldarella
A Antonini
A Lamartina
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 SE7500889L publication Critical patent/SE7500889L/xx
Publication of SE408679B publication Critical patent/SE408679B/sv

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)
  • Monitoring And Testing Of Exchanges (AREA)
  • Telephonic Communication Services (AREA)
  • Interface Circuits In Exchanges (AREA)
SE7500889A 1974-01-29 1975-01-28 Anordning i en telefonvexel for omvandling av flerfrekventa signaler till likstromssignaler SE408679B (sv)

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
SE7500889L SE7500889L (sv) 1975-07-30
SE408679B true SE408679B (sv) 1979-06-25

Family

ID=11162318

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7500889A SE408679B (sv) 1974-01-29 1975-01-28 Anordning i en telefonvexel for omvandling av flerfrekventa signaler till likstromssignaler

Country Status (8)

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

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0353739B1 (en) * 1988-08-03 1995-11-08 Matsushita Electric Industrial Co., Ltd. Telephone-call distributor

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
IT1012125B (it) 1977-03-10
FR2259505A1 (sv) 1975-08-22
NL7413056A (nl) 1975-07-31
DE2502317A1 (de) 1975-07-31
US3988547A (en) 1976-10-26
BR7408879A (pt) 1976-05-04
FR2259505B1 (sv) 1979-08-03
GB1491941A (en) 1977-11-16
SE7500889L (sv) 1975-07-30

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