BE878527A - Equipement de commutation pour une installation de communication telephonique interne, une installation d'intercommunication en duplex ou une installation d'appel par haut-parleurs commandee par touches - Google Patents
Equipement de commutation pour une installation de communication telephonique interne, une installation d'intercommunication en duplex ou une installation d'appel par haut-parleurs commandee par touchesInfo
- Publication number
- BE878527A BE878527A BE0/196962A BE196962A BE878527A BE 878527 A BE878527 A BE 878527A BE 0/196962 A BE0/196962 A BE 0/196962A BE 196962 A BE196962 A BE 196962A BE 878527 A BE878527 A BE 878527A
- Authority
- BE
- Belgium
- Prior art keywords
- installation
- key
- switching equipment
- telephone communication
- internal telephone
- Prior art date
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)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19782837950 DE2837950C2 (de) | 1978-08-31 | 1978-08-31 | Vermittlungseinrichtung für eine tastengesteuerte Wechsel-, Gegen- oder Lautsprechanlage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE878527A true BE878527A (fr) | 1979-12-17 |
Family
ID=6048319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE0/196962A BE878527A (fr) | 1978-08-31 | 1979-08-30 | Equipement de commutation pour une installation de communication telephonique interne, une installation d'intercommunication en duplex ou une installation d'appel par haut-parleurs commandee par touches |
Country Status (6)
| Country | Link |
|---|---|
| AT (1) | AT372560B (xx) |
| BE (1) | BE878527A (xx) |
| CH (1) | CH645493A5 (xx) |
| DE (1) | DE2837950C2 (xx) |
| GB (1) | GB2029165B (xx) |
| NL (1) | NL183264C (xx) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3000858C2 (de) * | 1980-01-11 | 1986-11-13 | Neumann Elektronik GmbH, 4330 Mülheim | Tastengesteuerte Wechsel-, Gegen- oder Lautsprechanlage |
| DE3214657C2 (de) * | 1982-04-21 | 1985-07-04 | ANT Nachrichtentechnik GmbH, 7150 Backnang | Einrichtung für die Sprach- und/oder Datenvermittlung und -übertragung |
| DE4107591C1 (xx) * | 1991-03-09 | 1992-03-05 | Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung Ev, 8000 Muenchen, De | |
| DE4107593C1 (xx) * | 1991-03-09 | 1992-05-21 | Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung Ev, 8000 Muenchen, De | |
| DE4236046C1 (de) * | 1992-10-24 | 1993-11-25 | Loh Kg Ritto Werk | Sprechanlage mit mehreren Sprechstellen und einer Zentralsteuerung |
| 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 (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1437967B2 (de) * | 1965-04-28 | 1970-05-21 | Telefunken Patentverwertungsgesellschaft Mbh, 7900 Ulm | Schaltungsanordnung für eine tastengesteuerte Wechselsprechanlage |
| DE2434321C3 (de) * | 1974-07-17 | 1983-12-08 | Neumann Elektronik GmbH, 4330 Mülheim | Schaltungsanordnung für tastengesteuerte Wechselsprech-, Gegensprech- oder Lautsprecheranlagen |
| DE2741000C2 (de) * | 1977-09-12 | 1982-04-15 | Industronic, Industrie-Electronic Gmbh & Co Kg, 6980 Wertheim | Leitungsgebundenes Übertragungssystem für Sprechverkehr und Informationsverarbeitung |
-
1978
- 1978-08-31 DE DE19782837950 patent/DE2837950C2/de not_active Expired
-
1979
- 1979-07-04 NL NL7905213A patent/NL183264C/xx not_active IP Right Cessation
- 1979-07-04 AT AT464879A patent/AT372560B/de not_active IP Right Cessation
- 1979-08-16 GB GB7928665A patent/GB2029165B/en not_active Expired
- 1979-08-21 CH CH762779A patent/CH645493A5/de not_active IP Right Cessation
- 1979-08-30 BE BE0/196962A patent/BE878527A/xx not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| GB2029165B (en) | 1982-08-25 |
| NL183264C (nl) | 1988-09-01 |
| NL183264B (nl) | 1988-04-05 |
| DE2837950B1 (de) | 1980-02-28 |
| NL7905213A (nl) | 1980-03-04 |
| ATA464879A (de) | 1983-02-15 |
| AT372560B (de) | 1983-10-25 |
| CH645493A5 (de) | 1984-09-28 |
| GB2029165A (en) | 1980-03-12 |
| DE2837950C2 (de) | 1986-11-13 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| RE | Patent lapsed |
Owner name: NEUMANN ELEKTRONIK G.M.B.H. Effective date: 19960831 |