ATA662178A - Notrufanlage - Google Patents
NotrufanlageInfo
- Publication number
- ATA662178A ATA662178A AT0662178A AT662178A ATA662178A AT A662178 A ATA662178 A AT A662178A AT 0662178 A AT0662178 A AT 0662178A AT 662178 A AT662178 A AT 662178A AT A662178 A ATA662178 A AT A662178A
- Authority
- AT
- Austria
- Prior art keywords
- emergency system
- emergency
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/68—Circuit arrangements for preventing eavesdropping
- H04M1/70—Lock-out or secrecy arrangements in party-line systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M13/00—Party-line systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/16—Automatic or semi-automatic exchanges with lock-out or secrecy provision in party-line systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q5/00—Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange
- H04Q5/02—Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange with direct connection for all subscribers, i.e. party-line systems
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Alarm Systems (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2758689A DE2758689C3 (de) | 1977-12-29 | 1977-12-29 | Notrufanlage |
Publications (2)
Publication Number | Publication Date |
---|---|
ATA662178A true ATA662178A (de) | 1982-09-15 |
AT370933B AT370933B (de) | 1983-05-10 |
Family
ID=6027623
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT0662178A AT370933B (de) | 1977-12-29 | 1978-09-13 | Notrufanlage |
Country Status (4)
Country | Link |
---|---|
AT (1) | AT370933B (de) |
CH (1) | CH640071A5 (de) |
DE (1) | DE2758689C3 (de) |
SE (1) | SE437435B (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2949513C2 (de) * | 1979-12-08 | 1983-12-22 | Neumann Elektronik GmbH, 4330 Mülheim | Notrufanlage |
DE3024494C2 (de) * | 1980-06-28 | 1982-05-19 | Neumann Elektronik GmbH, 4330 Mülheim | Prüfeinrichtung für eine Notrufteilnehmerstation |
-
1977
- 1977-12-29 DE DE2758689A patent/DE2758689C3/de not_active Expired
-
1978
- 1978-09-13 AT AT0662178A patent/AT370933B/de not_active IP Right Cessation
- 1978-10-31 CH CH1122378A patent/CH640071A5/de not_active IP Right Cessation
- 1978-12-15 SE SE7812930A patent/SE437435B/sv not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
DE2758689C3 (de) | 1981-02-12 |
CH640071A5 (en) | 1983-12-15 |
SE437435B (sv) | 1985-02-25 |
SE7812930L (sv) | 1979-06-30 |
AT370933B (de) | 1983-05-10 |
DE2758689B2 (de) | 1980-05-29 |
DE2758689A1 (de) | 1979-07-05 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ELJ | Ceased due to non-payment of the annual fee |