FR2450541A1 - Reseau de connexion pour conference telephonique en mia - Google Patents

Reseau de connexion pour conference telephonique en mia

Info

Publication number
FR2450541A1
FR2450541A1 FR7905436A FR7905436A FR2450541A1 FR 2450541 A1 FR2450541 A1 FR 2450541A1 FR 7905436 A FR7905436 A FR 7905436A FR 7905436 A FR7905436 A FR 7905436A FR 2450541 A1 FR2450541 A1 FR 2450541A1
Authority
FR
France
Prior art keywords
switched
bus
public network
impedances
automatic telephone
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
FR7905436A
Other languages
English (en)
Other versions
FR2450541B1 (fr
Inventor
Andre Baratin
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.)
Jeumont Schneider SA
Original Assignee
Jeumont Schneider 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 Jeumont Schneider SA filed Critical Jeumont Schneider SA
Priority to FR7905436A priority Critical patent/FR2450541A1/fr
Publication of FR2450541A1 publication Critical patent/FR2450541A1/fr
Application granted granted Critical
Publication of FR2450541B1 publication Critical patent/FR2450541B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/42—Systems providing special services or facilities to subscribers
    • H04M3/56—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities
    • H04M3/561—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities by multiplexing

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Interface Circuits In Exchanges (AREA)

Abstract

SELON L'INVENTION, POUR REALISER UNE CONFERENCE TELEPHONIQUE ENTRE M PARMI LES N POSTES SUPPLEMENTAIRES DE L'INSTALLATION POUVANT ETRE RELIES LORS DE LA CONFERENCE, N-1 BRANCHES SONT CONNECTEES EN PARALLELE ENTRE LE BUS DE TRANSMISSION 3 ET LA MASSE 4, CHAQUE BRANCHE COMPORTANT UN INTERRUPTEUR 12 EN SERIE AVEC UNE IMPEDANCE 11 EGALE A CELLE D'UN EQUIPEMENT DE POSTE SUPPLEMENTAIRE VU DU RESEAU DE CONNEXION. PENDANT CHAQUE VOIE TEMPORELLE AFFECTEE A LA CONFERENCE, LES INTERRUPTEURS DU RESEAU SONT COMMANDES DE TELLE MANIERE QUE M POSTES TELEPHONIQUES EMETTENT SIMULTANEMENT VERS UN POSTE RECEPTEUR, LES INTERRUPTEURS DE N-M BRANCHES ETANT ALORS FERMES. APPLICATION: TELEPHONIE.
FR7905436A 1979-03-02 1979-03-02 Reseau de connexion pour conference telephonique en mia Granted FR2450541A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7905436A FR2450541A1 (fr) 1979-03-02 1979-03-02 Reseau de connexion pour conference telephonique en mia

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7905436A FR2450541A1 (fr) 1979-03-02 1979-03-02 Reseau de connexion pour conference telephonique en mia

Publications (2)

Publication Number Publication Date
FR2450541A1 true FR2450541A1 (fr) 1980-09-26
FR2450541B1 FR2450541B1 (fr) 1984-05-25

Family

ID=9222678

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7905436A Granted FR2450541A1 (fr) 1979-03-02 1979-03-02 Reseau de connexion pour conference telephonique en mia

Country Status (1)

Country Link
FR (1) FR2450541A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2528646A1 (fr) * 1982-06-11 1983-12-16 Thomson Csf Mat Tel Dispositif de transmission entre les terminaisons d'un systeme de communication temporel

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE662379C (de) * 1930-03-26 1938-07-12 Siemens & Halske Akt Ges Konferenzschaltung
DE1038609B (de) * 1955-08-02 1958-09-11 Siemens Ag Fernsprechkonferenzanlage mit Zweiwegverstaerker
DE1168501B (de) * 1961-09-26 1964-04-23 Siemens Ag Zeitmultiplex-Vermittlungssystem mit einer Zweidraht-Multiplexschiene fuer Fernmelde-, insbesondere Fernsprechanlagen
US3236948A (en) * 1962-06-29 1966-02-22 Bell Telephone Labor Inc Multiple station communication network
US3420959A (en) * 1965-04-09 1969-01-07 Bell Telephone Labor Inc Telephone conference circuit
US3767861A (en) * 1972-08-31 1973-10-23 Gte Automatic Electric Lab Inc 3 to 10 port conference circuit
US3882276A (en) * 1974-03-22 1975-05-06 Bell Telephone Labor Inc Conferencing system utilizing oppositely phased hybrids
US3934091A (en) * 1974-12-23 1976-01-20 Bell Telephone Laboratories, Incorporated Automatic gain compensation in time division switching system
FR2312145A1 (fr) * 1975-05-23 1976-12-17 Western Electric Co Circuit pour servir d'interface entre deux parties d'une voie de communication

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE662379C (de) * 1930-03-26 1938-07-12 Siemens & Halske Akt Ges Konferenzschaltung
DE1038609B (de) * 1955-08-02 1958-09-11 Siemens Ag Fernsprechkonferenzanlage mit Zweiwegverstaerker
DE1168501B (de) * 1961-09-26 1964-04-23 Siemens Ag Zeitmultiplex-Vermittlungssystem mit einer Zweidraht-Multiplexschiene fuer Fernmelde-, insbesondere Fernsprechanlagen
US3236948A (en) * 1962-06-29 1966-02-22 Bell Telephone Labor Inc Multiple station communication network
US3420959A (en) * 1965-04-09 1969-01-07 Bell Telephone Labor Inc Telephone conference circuit
US3767861A (en) * 1972-08-31 1973-10-23 Gte Automatic Electric Lab Inc 3 to 10 port conference circuit
US3882276A (en) * 1974-03-22 1975-05-06 Bell Telephone Labor Inc Conferencing system utilizing oppositely phased hybrids
US3934091A (en) * 1974-12-23 1976-01-20 Bell Telephone Laboratories, Incorporated Automatic gain compensation in time division switching system
FR2312145A1 (fr) * 1975-05-23 1976-12-17 Western Electric Co Circuit pour servir d'interface entre deux parties d'une voie de communication

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2528646A1 (fr) * 1982-06-11 1983-12-16 Thomson Csf Mat Tel Dispositif de transmission entre les terminaisons d'un systeme de communication temporel

Also Published As

Publication number Publication date
FR2450541B1 (fr) 1984-05-25

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Legal Events

Date Code Title Description
TP Transmission of property
ST Notification of lapse