ES175948A1 - Mejoras en terminales telefonicos de onda portadora en dos sentidos con dispositivo de control de llamada - Google Patents

Mejoras en terminales telefonicos de onda portadora en dos sentidos con dispositivo de control de llamada

Info

Publication number
ES175948A1
ES175948A1 ES175948A ES175948A ES175948A1 ES 175948 A1 ES175948 A1 ES 175948A1 ES 175948 A ES175948 A ES 175948A ES 175948 A ES175948 A ES 175948A ES 175948 A1 ES175948 A1 ES 175948A1
Authority
ES
Spain
Prior art keywords
senses
control device
call control
telephone terminals
wave carrier
Prior art date
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
ES175948A
Other languages
English (en)
Spanish (es)
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.)
Nokia Spain SA
Original Assignee
Alcatel Espana SA
Standard Electrica SA
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 Alcatel Espana SA, Standard Electrica SA filed Critical Alcatel Espana SA
Publication of ES175948A1 publication Critical patent/ES175948A1/es
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J1/00—Frequency-division multiplex systems
    • H04J1/02—Details
    • H04J1/14—Arrangements providing for calling or supervisory signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)
ES175948A 1945-04-30 1946-11-29 Mejoras en terminales telefonicos de onda portadora en dos sentidos con dispositivo de control de llamada Expired ES175948A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US591068A US2414795A (en) 1945-04-30 1945-04-30 Ringing control arrangement for two-way carrier telephone terminals

Publications (1)

Publication Number Publication Date
ES175948A1 true ES175948A1 (es) 1947-01-01

Family

ID=24364926

Family Applications (1)

Application Number Title Priority Date Filing Date
ES175948A Expired ES175948A1 (es) 1945-04-30 1946-11-29 Mejoras en terminales telefonicos de onda portadora en dos sentidos con dispositivo de control de llamada

Country Status (4)

Country Link
US (1) US2414795A (fr)
BE (1) BE465290A (fr)
ES (1) ES175948A1 (fr)
FR (1) FR926079A (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR960967A (fr) * 1945-02-06 1950-04-28
US2457830A (en) * 1946-03-05 1949-01-04 Jr George F Moynahan Spot frequency oscillator system
US2540299A (en) * 1946-08-27 1951-02-06 Borg George W Corp Sound recording and reproducing apparatus
BE477040A (fr) * 1946-11-01
US2654003A (en) * 1947-11-24 1953-09-29 Int Electronics Co Oscillator-amplifier circuits for magnetic recording and reproducing systems
US2682627A (en) * 1949-01-25 1954-06-29 Askania Regulator Co Motor position control station arrangement
NL72570C (fr) * 1949-09-02
BE499154A (fr) * 1949-11-05
US2677726A (en) * 1950-07-26 1954-05-04 Bell Telephone Labor Inc Signaling system for carrier telephone transmission
BE523372A (fr) * 1952-10-08
US2938081A (en) * 1952-12-27 1960-05-24 Gen Electric Selective transmission system for telephonic ringing
CA609116A (en) * 1956-04-02 1960-11-22 Westinghouse Air Brake Company Transistor transceiver

Also Published As

Publication number Publication date
US2414795A (en) 1947-01-28
BE465290A (fr)
FR926079A (fr) 1947-09-22

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