NL183264C - CONNECTION SYSTEM FOR SIMPLEX, DUPLEX OR SPEAKER TRAFFIC BETWEEN A NUMBER OF DEVICES. - Google Patents

CONNECTION SYSTEM FOR SIMPLEX, DUPLEX OR SPEAKER TRAFFIC BETWEEN A NUMBER OF DEVICES.

Info

Publication number: NL183264C
Authority: NL; Netherlands
Prior art keywords: simplex; duplex; speaker; traffic; devices
Prior art date: 1978-08-31

Application number

NL7905213A

Other languages

Dutch (nl)

Other versions

NL7905213A (en

NL183264B (en

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.)

1978-08-31

Filing date

1979-07-04

Publication date

1988-09-01

1979-07-04 Application filed by Neumann Elektronik Gmbh filed Critical Neumann Elektronik Gmbh

1980-03-04 Publication of NL7905213A publication Critical patent/NL7905213A/en

1988-04-05 Publication of NL183264B publication Critical patent/NL183264B/en

1988-09-01 Application granted granted Critical

1988-09-01 Publication of NL183264C publication Critical patent/NL183264C/en

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
- H04M9/005—Arrangements for interconnection not involving centralised switching with subscriber controlled access to a line, i.e. key telephone systems with subscriber controlled access to an exchange line
- H04M9/007—Arrangements for interconnection not involving centralised switching with subscriber controlled access to a line, i.e. key telephone systems with subscriber controlled access to an exchange line wherein the key telephone sets are star-connected to a central unit by a limited number of lines

Landscapes

Engineering & Computer Science (AREA)
Signal Processing (AREA)
Interconnected Communication Systems, Intercoms, And Interphones (AREA)
Telephonic Communication Services (AREA)

NL7905213A 1978-08-31 1979-07-04 CONNECTION SYSTEM FOR SIMPLEX, DUPLEX OR SPEAKER TRAFFIC BETWEEN A NUMBER OF DEVICES. NL183264C (en)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE19782837950 DE2837950C2 (en)	1978-08-31	1978-08-31	Switching device for a button-controlled exchange, counter or loudspeaker system
DE2837950		1978-08-31

Publications (3)

Publication Number	Publication Date
NL7905213A NL7905213A (en)	1980-03-04
NL183264B NL183264B (en)	1988-04-05
NL183264C true NL183264C (en)	1988-09-01

Family

ID=6048319

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
NL7905213A NL183264C (en)	1978-08-31	1979-07-04	CONNECTION SYSTEM FOR SIMPLEX, DUPLEX OR SPEAKER TRAFFIC BETWEEN A NUMBER OF DEVICES.

Country Status (6)

Country	Link
AT (1)	AT372560B (en)
BE (1)	BE878527A (en)
CH (1)	CH645493A5 (en)
DE (1)	DE2837950C2 (en)
GB (1)	GB2029165B (en)
NL (1)	NL183264C (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE3000858C2 (en) *	1980-01-11	1986-11-13	Neumann Elektronik GmbH, 4330 Mülheim	Button-controlled exchange, counter or loudspeaker system
DE3214657C2 (en) *	1982-04-21	1985-07-04	ANT Nachrichtentechnik GmbH, 7150 Backnang	Device for voice and / or data switching and transmission
DE4107591C1 (en) *	1991-03-09	1992-03-05	Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung Ev, 8000 Muenchen, De
DE4107593C1 (en) *	1991-03-09	1992-05-21	Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung Ev, 8000 Muenchen, De
DE4236046C1 (en) *	1992-10-24	1993-11-25	Loh Kg Ritto Werk	Intercom system with centralised control - uses duplex amplifiers in connection path between calling and called speech stations with respective amplifier paths for each direction
DE4334906C2 (en) *	1993-10-13	1997-05-07	Neumann Elektronik Gmbh	Device for the transmission of call and occupancy status signals from two-way or intercom systems with line selection via a two-wire transmission line

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE1437967B2 (en) *	1965-04-28	1970-05-21	Telefunken Patentverwertungsgesellschaft Mbh, 7900 Ulm	Circuit arrangement for a button-controlled intercom system
DE2434321C3 (en) *	1974-07-17	1983-12-08	Neumann Elektronik GmbH, 4330 Mülheim	Circuit arrangement for button-controlled intercom, intercom or loudspeaker systems
DE2741000C2 (en) *	1977-09-12	1982-04-15	Industronic, Industrie-Electronic Gmbh & Co Kg, 6980 Wertheim	Line-bound transmission system for speech communication and information processing

1978
- 1978-08-31 DE DE19782837950 patent/DE2837950C2/en not_active Expired
1979
- 1979-07-04 AT AT464879A patent/AT372560B/en not_active IP Right Cessation
- 1979-07-04 NL NL7905213A patent/NL183264C/en not_active IP Right Cessation
- 1979-08-16 GB GB7928665A patent/GB2029165B/en not_active Expired
- 1979-08-21 CH CH762779A patent/CH645493A5/en not_active IP Right Cessation
- 1979-08-30 BE BE0/196962A patent/BE878527A/en not_active IP Right Cessation

Also Published As

Publication number	Publication date
GB2029165A (en)	1980-03-12
NL7905213A (en)	1980-03-04
GB2029165B (en)	1982-08-25
DE2837950C2 (en)	1986-11-13
BE878527A (en)	1979-12-17
AT372560B (en)	1983-10-25
CH645493A5 (en)	1984-09-28
ATA464879A (en)	1983-02-15
DE2837950B1 (en)	1980-02-28
NL183264B (en)	1988-04-05

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Legal Events

Date	Code	Title	Description
1980-03-25	A1A	A request for search or an international-type search has been filed
1982-06-01	BB	A search report has been drawn up
1982-11-01	BC	A request for examination has been filed
1985-01-01	A85	Still pending on 85-01-01
1988-10-17	BK	Erratum	Free format text: CORRECTION TO PAMPHLET
1997-04-01	V1	Lapsed because of non-payment of the annual fee	Effective date: 19970201