BE574667A - Dispositif de signalisation de poste. - Google Patents

Dispositif de signalisation de poste.

Info

Publication number
BE574667A
BE574667A BE574667A BE574667A BE574667A BE 574667 A BE574667 A BE 574667A BE 574667 A BE574667 A BE 574667A BE 574667 A BE574667 A BE 574667A BE 574667 A BE574667 A BE 574667A
Authority
BE
Belgium
Prior art keywords
signaling device
post signaling
post
signaling
Prior art date
Application number
BE574667A
Other languages
English (en)
Original Assignee
Ericsson Telefon Ab L M
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 Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Publication of BE574667A publication Critical patent/BE574667A/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone
    • H04M19/04—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone the ringing-current being generated at the substations

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Telephonic Communication Services (AREA)
  • Devices For Supply Of Signal Current (AREA)
BE574667A 1958-01-14 1959-01-13 Dispositif de signalisation de poste. BE574667A (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE27258 1958-01-14
US710563A US2951910A (en) 1958-01-14 1958-01-22 Substation signalling device
US766333A US2951909A (en) 1958-01-14 1958-10-09 Substation signalling device

Publications (1)

Publication Number Publication Date
BE574667A true BE574667A (fr) 1969-05-02

Family

ID=27354236

Family Applications (1)

Application Number Title Priority Date Filing Date
BE574667A BE574667A (fr) 1958-01-14 1959-01-13 Dispositif de signalisation de poste.

Country Status (5)

Country Link
US (2) US2951910A (fr)
BE (1) BE574667A (fr)
ES (1) ES246349A1 (fr)
FR (1) FR1220979A (fr)
GB (1) GB907466A (fr)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL245026A (fr) * 1958-11-05
GB956356A (en) * 1960-07-21 1964-04-22 Standard Telephones Cables Ltd Improvements in or relating to signalling methods between subscriber's sets and exchage
US3109994A (en) * 1960-06-30 1963-11-05 Automatic Elect Lab Multivibrator and amplifier powered by pulsating d. c.
NL271742A (fr) * 1960-11-24
US3248722A (en) * 1961-02-21 1966-04-26 Hood Gust & Irish Frequency keyed transistor oscillator signal receiver
GB989232A (en) * 1961-12-08 1965-04-14 Post Office Improvements in or relating to signalling circuits
US3165590A (en) * 1961-12-29 1965-01-12 Bell Telephone Labor Inc Speech transmission through telephone ringing circuit
NL288870A (fr) * 1962-02-12
US3218636A (en) * 1962-10-15 1965-11-16 Automatic Elect Lab Piezoelectric signalling device
US3254161A (en) * 1963-01-17 1966-05-31 North Electric Co Ringing arrangement for substation telephone instrument
US3221120A (en) * 1964-01-31 1965-11-30 Motorola Inc Electromechanical frequency responsive translating device
US3508012A (en) * 1967-11-24 1970-04-21 Bell Telephone Labor Inc Compatible tone ringer
US3553386A (en) * 1968-07-16 1971-01-05 Bell Telephone Labor Inc Telephone subscriber paging arrangement
CA952634A (en) * 1971-01-18 1974-08-06 Robert F. Mcalonie Tone ringer

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2130468A (en) * 1938-09-20 Signaling system
US2604545A (en) * 1950-05-19 1952-07-22 Bell Telephone Labor Inc Party line station signaling system
US2589800A (en) * 1950-05-19 1952-03-18 Bell Telephone Labor Inc Telephone signaling system
US2759179A (en) * 1952-12-05 1956-08-14 Bell Telephone Labor Inc Ringing circuit
US2761909A (en) * 1953-01-28 1956-09-04 Bell Telephone Labor Inc Multifrequency oscillator
US2824175A (en) * 1954-11-18 1958-02-18 Bell Telephone Labor Inc Selective ringing circuits
US2823267A (en) * 1956-03-29 1958-02-11 Bell Telephone Labor Inc Delay circuit for amplifying device
NL112535C (fr) * 1956-06-07

Also Published As

Publication number Publication date
FR1220979A (fr) 1960-05-30
ES246349A1 (es) 1959-06-01
US2951910A (en) 1960-09-06
GB907466A (en) 1962-10-03
US2951909A (en) 1960-09-06

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