FR2260900A1 - Time multiplex transmission system for digital data signals - has modems between telephone exchanges for asynchronous data conversion - Google Patents

Time multiplex transmission system for digital data signals - has modems between telephone exchanges for asynchronous data conversion

Info

Publication number
FR2260900A1
FR2260900A1 FR7503574A FR7503574A FR2260900A1 FR 2260900 A1 FR2260900 A1 FR 2260900A1 FR 7503574 A FR7503574 A FR 7503574A FR 7503574 A FR7503574 A FR 7503574A FR 2260900 A1 FR2260900 A1 FR 2260900A1
Authority
FR
France
Prior art keywords
signals
channels
modem
time multiplex
modems
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.)
Granted
Application number
FR7503574A
Other languages
English (en)
French (fr)
Other versions
FR2260900B1 (forum.php
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.)
GSELT CENTRO STUDI LAB
Original Assignee
GSELT CENTRO STUDI LAB
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 GSELT CENTRO STUDI LAB filed Critical GSELT CENTRO STUDI LAB
Publication of FR2260900A1 publication Critical patent/FR2260900A1/fr
Application granted granted Critical
Publication of FR2260900B1 publication Critical patent/FR2260900B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/22—Arrangements affording multiple use of the transmission path using time-division multiplexing
    • H04L5/24—Arrangements affording multiple use of the transmission path using time-division multiplexing with start-stop synchronous converters
    • 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
    • H04Q1/446—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using one signalling frequency
    • H04Q1/448—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using one signalling frequency with conversion of a single frequency signal into a digital signal
    • H04Q1/4485—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using one signalling frequency with conversion of a single frequency signal into a digital signal which is transmitted in digital form

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
FR7503574A 1974-02-11 1975-02-05 Time multiplex transmission system for digital data signals - has modems between telephone exchanges for asynchronous data conversion Granted FR2260900A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT6735674A IT1009134B (it) 1974-02-11 1974-02-11 Modem numerico a divisione di tem po per trasmissione di dati

Publications (2)

Publication Number Publication Date
FR2260900A1 true FR2260900A1 (en) 1975-09-05
FR2260900B1 FR2260900B1 (forum.php) 1978-02-03

Family

ID=11301710

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7503574A Granted FR2260900A1 (en) 1974-02-11 1975-02-05 Time multiplex transmission system for digital data signals - has modems between telephone exchanges for asynchronous data conversion

Country Status (4)

Country Link
CH (1) CH582458A5 (forum.php)
DE (1) DE2505457C3 (forum.php)
FR (1) FR2260900A1 (forum.php)
IT (1) IT1009134B (forum.php)

Also Published As

Publication number Publication date
FR2260900B1 (forum.php) 1978-02-03
DE2505457C3 (de) 1979-11-22
DE2505457A1 (de) 1975-08-14
DE2505457B2 (forum.php) 1979-03-22
IT1009134B (it) 1976-12-10
CH582458A5 (forum.php) 1976-11-30

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Legal Events

Date Code Title Description
ST Notification of lapse