FR2289079A1 - Couplage pour installations d'interphones, de communications en duplex, ou de haut-parleurs a commande par touches - Google Patents

Couplage pour installations d'interphones, de communications en duplex, ou de haut-parleurs a commande par touches

Info

Publication number
FR2289079A1
FR2289079A1 FR7522457A FR7522457A FR2289079A1 FR 2289079 A1 FR2289079 A1 FR 2289079A1 FR 7522457 A FR7522457 A FR 7522457A FR 7522457 A FR7522457 A FR 7522457A FR 2289079 A1 FR2289079 A1 FR 2289079A1
Authority
FR
France
Prior art keywords
keys
stations
coupling
duplex communications
intercom systems
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
FR7522457A
Other languages
English (en)
French (fr)
Other versions
FR2289079B1 (en(2012)
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.)
NEUMANN ELEKTRONIK GmbH
Original Assignee
NEUMANN ELEKTRONIK GmbH
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 NEUMANN ELEKTRONIK GmbH filed Critical NEUMANN ELEKTRONIK GmbH
Publication of FR2289079A1 publication Critical patent/FR2289079A1/fr
Application granted granted Critical
Publication of FR2289079B1 publication Critical patent/FR2289079B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/002—Arrangements for interconnection not involving centralised switching with subscriber controlled access to a line, i.e. key telephone systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Devices For Supply Of Signal Current (AREA)
FR7522457A 1974-07-17 1975-07-11 Couplage pour installations d'interphones, de communications en duplex, ou de haut-parleurs a commande par touches Granted FR2289079A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2434321A DE2434321C3 (de) 1974-07-17 1974-07-17 Schaltungsanordnung für tastengesteuerte Wechselsprech-, Gegensprech- oder Lautsprecheranlagen

Publications (2)

Publication Number Publication Date
FR2289079A1 true FR2289079A1 (fr) 1976-05-21
FR2289079B1 FR2289079B1 (en(2012)) 1982-03-26

Family

ID=5920787

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7522457A Granted FR2289079A1 (fr) 1974-07-17 1975-07-11 Couplage pour installations d'interphones, de communications en duplex, ou de haut-parleurs a commande par touches

Country Status (9)

Country Link
AT (1) AT341590B (en(2012))
BE (1) BE831415A (en(2012))
CH (1) CH596721A5 (en(2012))
DE (1) DE2434321C3 (en(2012))
ES (1) ES439298A1 (en(2012))
FI (1) FI61111C (en(2012))
FR (1) FR2289079A1 (en(2012))
NO (1) NO141583C (en(2012))
SE (1) SE7508032L (en(2012))

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2837950C2 (de) * 1978-08-31 1986-11-13 Neumann Elektronik GmbH, 4330 Mülheim Vermittlungseinrichtung für eine tastengesteuerte Wechsel-, Gegen- oder Lautsprechanlage
DE3418484C1 (de) * 1984-05-18 1985-08-29 Neumann Elektronik GmbH, 4330 Mülheim Rücksprecheinrichtung für eine Teilnehmerstelle einer tastengesteuerten Wechselsprechanlage mit Linienwahl
DE4334906C2 (de) * 1993-10-13 1997-05-07 Neumann Elektronik Gmbh Einrichtung zur Übertragung von Ruf- und Belegungszustandssignalen von Wechsel- oder Gegen-Lautsprechanlagen mit Linienwahl über eine Zweidraht-Fernleitung

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1512811C3 (de) * 1967-04-27 1984-08-02 ANT Nachrichtentechnik GmbH, 7150 Backnang Schaltungsanordnung für die Prüfung der sprechstelleneigenen Einrichtungen in Sprechanlagen

Also Published As

Publication number Publication date
FI61111B (fi) 1982-01-29
DE2434321C3 (de) 1983-12-08
BE831415A (fr) 1975-11-17
NO141583B (no) 1979-12-27
NO141583C (no) 1980-04-09
CH596721A5 (en(2012)) 1978-03-15
SE7508032L (sv) 1976-01-19
FI61111C (fi) 1982-05-10
ES439298A1 (es) 1977-03-01
ATA482375A (de) 1977-06-15
DE2434321B2 (de) 1977-01-20
FI751974A7 (en(2012)) 1976-01-18
AT341590B (de) 1978-02-10
FR2289079B1 (en(2012)) 1982-03-26
NO752541L (en(2012)) 1976-01-20
DE2434321A1 (de) 1976-01-22

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