BE773394A - Generateur d'impulsions digitales pour la signalisation telephonique - Google Patents

Generateur d'impulsions digitales pour la signalisation telephonique

Info

Publication number
BE773394A
BE773394A BE773394A BE773394A BE773394A BE 773394 A BE773394 A BE 773394A BE 773394 A BE773394 A BE 773394A BE 773394 A BE773394 A BE 773394A BE 773394 A BE773394 A BE 773394A
Authority
BE
Belgium
Prior art keywords
pulse generator
digital pulse
telephone signaling
signaling
telephone
Prior art date
Application number
BE773394A
Other languages
English (en)
Inventor
S G Pitroda
B J Rekiere
Original Assignee
Gte Automatic Electric Lab Inc
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 Gte Automatic Electric Lab Inc filed Critical Gte Automatic Electric Lab Inc
Publication of BE773394A publication Critical patent/BE773394A/fr

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
    • H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
    • H04Q1/444—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
    • H04Q1/45—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling
    • H04Q1/457—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling with conversion of multifrequency signals into digital signals
    • H04Q1/4575—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling with conversion of multifrequency signals into digital signals which are transmitted in digital form
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/04—Selecting arrangements for multiplex systems for time-division multiplexing

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Time-Division Multiplex Systems (AREA)
BE773394A 1970-10-02 1971-10-01 Generateur d'impulsions digitales pour la signalisation telephonique BE773394A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US7748770A 1970-10-02 1970-10-02

Publications (1)

Publication Number Publication Date
BE773394A true BE773394A (fr) 1972-04-04

Family

ID=22138347

Family Applications (1)

Application Number Title Priority Date Filing Date
BE773394A BE773394A (fr) 1970-10-02 1971-10-01 Generateur d'impulsions digitales pour la signalisation telephonique

Country Status (3)

Country Link
US (1) US3706855A (fr)
BE (1) BE773394A (fr)
CA (1) CA941985A (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3870826A (en) * 1973-12-21 1975-03-11 Bell Telephone Labor Inc Tone control system for a time division switching system
JPS5753321Y2 (fr) * 1978-05-11 1982-11-18
CA1124898A (fr) * 1979-03-01 1982-06-01 Ernst A. Munter Generateur de tonalites a mic
US4524326A (en) * 1982-07-22 1985-06-18 Amca International Corp. Digitally-driven sine/cosine generator and modulator
US4618966A (en) * 1983-06-01 1986-10-21 Cincinnati Electronics Corporation Frequency shift key modulator
US4571723A (en) * 1983-10-24 1986-02-18 Board Of Trustees Of The Leland Stanford Junior University Pulse code modulated digital telephony tone generator
US4737720A (en) * 1986-01-06 1988-04-12 General Electric Company DTMF generation using pre-summed tables
US5034977A (en) * 1989-04-04 1991-07-23 Industrial Technology Research Institute Phase accumulation dual tone multiple frequency generator
US5583933A (en) * 1994-08-05 1996-12-10 Mark; Andrew R. Method and apparatus for the secure communication of data
US5907597A (en) * 1994-08-05 1999-05-25 Smart Tone Authentication, Inc. Method and system for the secure communication of data

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3435149A (en) * 1965-03-17 1969-03-25 Bell Telephone Labor Inc Tone generators for delta modulation time division communication switching systems
FR1458291A (fr) * 1965-07-30 1966-03-04 Multienregistreur pour autocommutateur téléphonique à répartition temporelle
FR2009623A1 (fr) * 1968-05-30 1970-02-06 Sits Soc It Telecom Siemens

Also Published As

Publication number Publication date
US3706855A (en) 1972-12-19
CA941985A (en) 1974-02-12

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