ZA864999B - A communication system - Google Patents
A communication systemInfo
- Publication number
- ZA864999B ZA864999B ZA864999A ZA864999A ZA864999B ZA 864999 B ZA864999 B ZA 864999B ZA 864999 A ZA864999 A ZA 864999A ZA 864999 A ZA864999 A ZA 864999A ZA 864999 B ZA864999 B ZA 864999B
- Authority
- ZA
- South Africa
- Prior art keywords
- communication system
- communication
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
- H04M11/02—Telephonic communication systems specially adapted for combination with other electrical systems with bell or annunciator systems
- H04M11/025—Door telephones
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Alarm Systems (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19853524094 DE3524094A1 (en) | 1985-07-05 | 1985-07-05 | MESSAGE SYSTEM |
Publications (1)
Publication Number | Publication Date |
---|---|
ZA864999B true ZA864999B (en) | 1987-02-25 |
Family
ID=6275063
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ZA864999A ZA864999B (en) | 1985-07-05 | 1986-07-04 | A communication system |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0208959A1 (en) |
DE (1) | DE3524094A1 (en) |
ZA (1) | ZA864999B (en) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2644024A1 (en) * | 1989-03-01 | 1990-09-07 | Teletec | Electronic janitor with intercom and use of such a janitor |
FR2653624B1 (en) * | 1989-10-20 | 1994-07-29 | Zanouda Kaddour | METHOD FOR MAINTAINING A DEVICE FOR CONTROLLING ACCESS TO A BUILDING, AND CONTROLLING DEVICE USING THE SAME. |
SE467810B (en) * | 1991-01-29 | 1992-09-14 | Anders Edvard Trell | MAKE SIGNAL / COMMUNICATE WITHIN A PORT PHONE SYSTEM AND PORT PHONE SYSTEM FOR COMMUNICATION AS SET |
DE4127014A1 (en) * | 1991-08-16 | 1993-02-18 | Avm Schmelter Gmbh & Co Kg | Medical data acquisition arrangement - contains central computer linked to sensors carried by patients and communications units via HF networks |
DE4339662A1 (en) * | 1993-11-22 | 1995-05-24 | Haus U Sicherheitstechnik Gmbh | Danger situation alarm and information transmission apparatus |
DE4412942A1 (en) * | 1994-04-15 | 1995-10-19 | Manfred Trautvetter | Bell system and or multifunction intercom system |
DE19548744C5 (en) * | 1995-02-28 | 2004-02-05 | TCS TürControlSysteme AG | Signal and intercom for home automation |
ES2110903B1 (en) * | 1995-07-19 | 1998-10-01 | Cifuentes Antonio Tocino | ALARM SYSTEM FOR ELECTRONIC DOORS AND VIDEO DOORS. |
DE19643125C2 (en) * | 1996-10-18 | 2003-04-10 | Siedle & Soehne S | Door Phone System |
DE19707190A1 (en) * | 1997-02-22 | 1998-08-27 | Alsthom Cge Alcatel | Network gateway device |
DE19817161C2 (en) * | 1998-04-17 | 2000-05-11 | Loh Kg Ritto Werk | Door intercom with one door station and several apartment intercoms |
DE102005032958A1 (en) * | 2005-07-14 | 2007-01-25 | S. Siedle & Söhne Telefon- und Telegrafenwerke OHG | Domestic installation e.g. door-bell system, operating method, involve separating connection between door station and home station responsive to reception of call at another home station, where connection serves for interchanging signal |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2165904B1 (en) * | 1971-12-31 | 1973-06-28 | Kathrein-Werke Kg, 8200 Rosenheim | System for multiple use of signal lines in buildings |
DE2946177C2 (en) * | 1979-11-15 | 1988-08-18 | S. Siedle & Söhne Telefon- und Telegrafenwerke GmbH, 7743 Furtwangen | House system for the transmission of information |
-
1985
- 1985-07-05 DE DE19853524094 patent/DE3524094A1/en not_active Withdrawn
-
1986
- 1986-06-25 EP EP86108636A patent/EP0208959A1/en not_active Withdrawn
- 1986-07-04 ZA ZA864999A patent/ZA864999B/en unknown
Also Published As
Publication number | Publication date |
---|---|
EP0208959A1 (en) | 1987-01-21 |
DE3524094A1 (en) | 1987-01-08 |
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