FR2374786A1 - Dispositif de mesure d'occupation de voies dans un systeme multiplex a modulation par repartition en frequence - Google Patents

Dispositif de mesure d'occupation de voies dans un systeme multiplex a modulation par repartition en frequence

Info

Publication number
FR2374786A1
FR2374786A1 FR7637572A FR7637572A FR2374786A1 FR 2374786 A1 FR2374786 A1 FR 2374786A1 FR 7637572 A FR7637572 A FR 7637572A FR 7637572 A FR7637572 A FR 7637572A FR 2374786 A1 FR2374786 A1 FR 2374786A1
Authority
FR
France
Prior art keywords
voice
frequency
telephone line
line status
energy circuit
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
FR7637572A
Other languages
English (en)
French (fr)
Other versions
FR2374786B1 (OSRAM
Inventor
Alain Castanet
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 Inc
Original Assignee
Nokia 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 Nokia Inc filed Critical Nokia Inc
Priority to FR7637572A priority Critical patent/FR2374786A1/fr
Publication of FR2374786A1 publication Critical patent/FR2374786A1/fr
Application granted granted Critical
Publication of FR2374786B1 publication Critical patent/FR2374786B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J1/00—Frequency-division multiplex systems
    • H04J1/02—Details
    • H04J1/16—Monitoring arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)
FR7637572A 1976-12-14 1976-12-14 Dispositif de mesure d'occupation de voies dans un systeme multiplex a modulation par repartition en frequence Granted FR2374786A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7637572A FR2374786A1 (fr) 1976-12-14 1976-12-14 Dispositif de mesure d'occupation de voies dans un systeme multiplex a modulation par repartition en frequence

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7637572A FR2374786A1 (fr) 1976-12-14 1976-12-14 Dispositif de mesure d'occupation de voies dans un systeme multiplex a modulation par repartition en frequence

Publications (2)

Publication Number Publication Date
FR2374786A1 true FR2374786A1 (fr) 1978-07-13
FR2374786B1 FR2374786B1 (OSRAM) 1980-02-08

Family

ID=9181026

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7637572A Granted FR2374786A1 (fr) 1976-12-14 1976-12-14 Dispositif de mesure d'occupation de voies dans un systeme multiplex a modulation par repartition en frequence

Country Status (1)

Country Link
FR (1) FR2374786A1 (OSRAM)

Also Published As

Publication number Publication date
FR2374786B1 (OSRAM) 1980-02-08

Similar Documents

Publication Publication Date Title
CA1075837A (en) Arrangement for processing auxiliary signals in a frequency multiplex transmission system
JPS55163927A (en) Sound-band multiplex transmission system
EP0987865A3 (en) Avoidance of spurious emissions from xDSL transmission
RU99121625A (ru) Система связи
FR2374786A1 (fr) Dispositif de mesure d'occupation de voies dans un systeme multiplex a modulation par repartition en frequence
FR2376569A1 (fr) Systeme de radiocommunications permettant le raccordement de postes d'abonnes fixes a un reseau de transmission d'informations
RU95105992A (ru) Способ и устройство для предоставления услуг по защищенной от подслушивания телефонной связи в сети из гибридного коаксиального кабеля
DE69212353D1 (de) Verfahren und Vorrichtung zur Konzentration von Paketen für ISDN-Datenendgeräte
US3637955A (en) Supervisory system for unattended repeaters
FI60474C (fi) Moduleringsanordning foer bildande av ett telefoni-frekvensmultiplexsystem
US2272613A (en) Transmission with level equalizing
JPS55162607A (en) Fm demodulation circuit
GB1460513A (en) Measurement of noise in a communication channel
JP3150529B2 (ja) 自動検針システムの接続方法及び自動検針システム
Chao et al. Pulse time modulation techniques for low cost analog signal transmission systems
SU552731A1 (ru) Способ передачи стереофонических прогамм
Feher et al. Simultaneous transmission of digital phase-shift keying and of analog television signals
JPS5541010A (en) Subscriber line concentration system in time sharing telephone exchanger
Varshney et al. Discrete-Time Analysis of Integrated Voice/Data Multiplexers With and Without Speech Activity Detectors
Labeyrie High-Speed Data Transmission Over a Group Link Telephone Channel
EP0218966A2 (de) Nachrichtenübertragungsverfahren
GB1487216A (en) Digital signal processor
SU677129A1 (ru) Способ управлени потоками нагрузки сети св зи
JPH0693666B2 (ja) 周波数多重伝送方式の受信装置
ES2121903T3 (es) Metodo para transferir, por medio de un sistema de radioenlace señales radiofonicas para la emision de isofrecuencia.

Legal Events

Date Code Title Description
ST Notification of lapse