FR2312145A1 - Circuit pour servir d'interface entre deux parties d'une voie de communication - Google Patents

Circuit pour servir d'interface entre deux parties d'une voie de communication

Info

Publication number
FR2312145A1
FR2312145A1 FR7614786A FR7614786A FR2312145A1 FR 2312145 A1 FR2312145 A1 FR 2312145A1 FR 7614786 A FR7614786 A FR 7614786A FR 7614786 A FR7614786 A FR 7614786A FR 2312145 A1 FR2312145 A1 FR 2312145A1
Authority
FR
France
Prior art keywords
interface unit
conferences
telephone interface
differential amplifiers
representing transmission
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.)
Withdrawn
Application number
FR7614786A
Other languages
English (en)
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.)
AT&T Corp
Original Assignee
Western Electric Co 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
Priority claimed from US05/580,293 external-priority patent/US3991280A/en
Priority claimed from US05/580,292 external-priority patent/US3991279A/en
Application filed by Western Electric Co Inc filed Critical Western Electric Co Inc
Publication of FR2312145A1 publication Critical patent/FR2312145A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • H04Q11/0421—Circuit arrangements therefor
    • 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)
  • Computer Networks & Wireless Communication (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
FR7614786A 1975-05-23 1976-05-17 Circuit pour servir d'interface entre deux parties d'une voie de communication Withdrawn FR2312145A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US05/580,293 US3991280A (en) 1975-05-23 1975-05-23 Monobus variable resistance transmission circuit
US05/580,292 US3991279A (en) 1975-05-23 1975-05-23 Monobus interface circuit

Publications (1)

Publication Number Publication Date
FR2312145A1 true FR2312145A1 (fr) 1976-12-17

Family

ID=27078000

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7614786A Withdrawn FR2312145A1 (fr) 1975-05-23 1976-05-17 Circuit pour servir d'interface entre deux parties d'une voie de communication

Country Status (5)

Country Link
JP (1) JPS51144108A (fr)
DE (1) DE2622568A1 (fr)
FR (1) FR2312145A1 (fr)
NL (1) NL7605479A (fr)
SE (1) SE7605542L (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2416600A1 (fr) * 1978-02-01 1979-08-31 Mitel Corp Circuit de ligne telephonique
FR2450541A1 (fr) * 1979-03-02 1980-09-26 Jeumont Schneider Reseau de connexion pour conference telephonique en mia
FR2536614A1 (fr) * 1982-11-18 1984-05-25 Laroche Jean Louis Dispositif d'interconnexion de lignes de transmission notamment de lignes telephoniques, utilisant des amplificateurs differentiels

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3223033A1 (de) * 1982-06-19 1983-12-22 Philips Kommunikations Industrie AG, 8500 Nürnberg Verfahren und schaltungsanordnung zur herstellung von konferenzverbindungen zwischen teilnehmerstellen eines fernmeldenetzes
JPH0728751Y2 (ja) * 1988-09-14 1995-06-28 三洋電機株式会社 電話装置

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2416600A1 (fr) * 1978-02-01 1979-08-31 Mitel Corp Circuit de ligne telephonique
FR2450541A1 (fr) * 1979-03-02 1980-09-26 Jeumont Schneider Reseau de connexion pour conference telephonique en mia
FR2536614A1 (fr) * 1982-11-18 1984-05-25 Laroche Jean Louis Dispositif d'interconnexion de lignes de transmission notamment de lignes telephoniques, utilisant des amplificateurs differentiels
EP0112734A1 (fr) * 1982-11-18 1984-07-04 Jean-Louis Laroche Dispositif d'interconnexion de lignes de transmission notamment de lignes téléphoniques, utilisant des amplificateurs différentiels

Also Published As

Publication number Publication date
DE2622568A1 (de) 1976-12-09
SE7605542L (sv) 1976-11-24
NL7605479A (nl) 1976-11-25
JPS51144108A (en) 1976-12-10

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Legal Events

Date Code Title Description
ST Notification of lapse