FR2386202A1 - Dispositif de test en local pour un equipement de transmission de donnees duplex - Google Patents

Dispositif de test en local pour un equipement de transmission de donnees duplex

Info

Publication number
FR2386202A1
FR2386202A1 FR7709827A FR7709827A FR2386202A1 FR 2386202 A1 FR2386202 A1 FR 2386202A1 FR 7709827 A FR7709827 A FR 7709827A FR 7709827 A FR7709827 A FR 7709827A FR 2386202 A1 FR2386202 A1 FR 2386202A1
Authority
FR
France
Prior art keywords
local
modulator
test system
telephone line
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
FR7709827A
Other languages
English (en)
Other versions
FR2386202B1 (fr
Inventor
Rene Filaferro
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.)
Alcatel CIT SA
Original Assignee
Alcatel CIT 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 CIT SA filed Critical Alcatel CIT SA
Priority to FR7709827A priority Critical patent/FR2386202A1/fr
Publication of FR2386202A1 publication Critical patent/FR2386202A1/fr
Application granted granted Critical
Publication of FR2386202B1 publication Critical patent/FR2386202B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/24—Testing correct operation
    • H04L1/242—Testing correct operation by comparing a transmitted test signal with a locally generated replica
    • H04L1/243—Testing correct operation by comparing a transmitted test signal with a locally generated replica at the transmitter, using a loop-back

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)

Abstract

La présente invention est relative au test en local des équipements des systèmes de transmission de données duplex notamment sur ligne téléphonique utilisant deux voies, une par sens de transmission, occupant des bandes de fréquences distinctes Elle a pour objet un dispositif de test pour un équipement du type précité comportant un émetteur et un recepteur, ce dispositif comprenant un oscillateur local 14 et un modulateur 15 permettant de transposer les signaux de ligne issus de l'émetteur 1 dans la bande de fréquence reçue par le récepteur 2. Elle s'applique avantageusement aux vérifications des équipements des systèmes de transmission de données.
FR7709827A 1977-03-31 1977-03-31 Dispositif de test en local pour un equipement de transmission de donnees duplex Granted FR2386202A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7709827A FR2386202A1 (fr) 1977-03-31 1977-03-31 Dispositif de test en local pour un equipement de transmission de donnees duplex

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7709827A FR2386202A1 (fr) 1977-03-31 1977-03-31 Dispositif de test en local pour un equipement de transmission de donnees duplex

Publications (2)

Publication Number Publication Date
FR2386202A1 true FR2386202A1 (fr) 1978-10-27
FR2386202B1 FR2386202B1 (fr) 1981-11-06

Family

ID=9188867

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7709827A Granted FR2386202A1 (fr) 1977-03-31 1977-03-31 Dispositif de test en local pour un equipement de transmission de donnees duplex

Country Status (1)

Country Link
FR (1) FR2386202A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0014505A1 (fr) * 1979-02-05 1980-08-20 Telecommunications Radioelectriques Et Telephoniques T.R.T. Système de test d'un dispositif muni d'un annuleur d'écho
FR2485306A1 (fr) * 1980-06-23 1981-12-24 Trt Telecom Radio Electr Systeme de test local d'un modem utilisant la modulation par deplacement de frequence
EP0580339A1 (fr) * 1992-07-21 1994-01-26 Advanced Micro Devices, Inc. Systèmes de test à modulateur

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3655915A (en) * 1970-05-07 1972-04-11 Gen Datacomm Ind Inc Closed loop test method and apparatus for duplex data transmission modem
FR2161606A5 (fr) * 1971-11-15 1973-07-06 Milgo Electronic Corp

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3655915A (en) * 1970-05-07 1972-04-11 Gen Datacomm Ind Inc Closed loop test method and apparatus for duplex data transmission modem
FR2161606A5 (fr) * 1971-11-15 1973-07-06 Milgo Electronic Corp

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
'POST OFFICE ELECTRICAL ENGINEERS JOURNAL', volume 65, part 2, 1972, juillet, London, J.J. HART: 'The Maintenance of Datel 600 Multipoint Networks', pages 115 - 118 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0014505A1 (fr) * 1979-02-05 1980-08-20 Telecommunications Radioelectriques Et Telephoniques T.R.T. Système de test d'un dispositif muni d'un annuleur d'écho
FR2448258A1 (fr) * 1979-02-05 1980-08-29 Trt Telecom Radio Electr Systeme de test d'un dispositif muni d'un annuleur d'echo
FR2485306A1 (fr) * 1980-06-23 1981-12-24 Trt Telecom Radio Electr Systeme de test local d'un modem utilisant la modulation par deplacement de frequence
EP0042642A1 (fr) * 1980-06-23 1981-12-30 Telecommunications Radioelectriques Et Telephoniques T.R.T. Système de test local d'un modem utilisant la modulation par déplacement de fréquence
EP0580339A1 (fr) * 1992-07-21 1994-01-26 Advanced Micro Devices, Inc. Systèmes de test à modulateur

Also Published As

Publication number Publication date
FR2386202B1 (fr) 1981-11-06

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Legal Events

Date Code Title Description
ST Notification of lapse