DE2952814A1 - Monitoring device for monitoring telephone calls coming through a subscriber station - Google Patents
Monitoring device for monitoring telephone calls coming through a subscriber stationInfo
- Publication number
- DE2952814A1 DE2952814A1 DE19792952814 DE2952814T DE2952814A1 DE 2952814 A1 DE2952814 A1 DE 2952814A1 DE 19792952814 DE19792952814 DE 19792952814 DE 2952814 T DE2952814 T DE 2952814T DE 2952814 A1 DE2952814 A1 DE 2952814A1
- Authority
- DE
- Germany
- Prior art keywords
- monitoring
- subscriber station
- telephone calls
- calls coming
- monitoring device
- 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.)
- Ceased
Links
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH587878A CH623695A5 (de) | 1978-05-30 | 1978-05-30 | |
PCT/CH1979/000076 WO1979001145A1 (en) | 1978-05-30 | 1979-05-25 | Monitoring device for monitoring telephone calls coming through a subscriber station |
Publications (1)
Publication Number | Publication Date |
---|---|
DE2952814A1 true DE2952814A1 (de) | 1981-01-08 |
Family
ID=25698566
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19792952814 Ceased DE2952814A1 (de) | 1978-05-30 | 1979-05-25 | Monitoring device for monitoring telephone calls coming through a subscriber station |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE2952814A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3826100A1 (de) * | 1988-08-01 | 1990-02-08 | Licentia Gmbh | Gesteuerte telefonsperreinrichtung |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3514548A (en) * | 1967-04-12 | 1970-05-26 | Priva Phone Inc | Telephone apparatus for discriminating between desired and undesired calls |
DE2634112A1 (de) * | 1976-02-02 | 1978-02-02 | Int Mobile Machines | Verfahren und schaltungsanordnung zum erkennen eines rufsignals |
US4074078A (en) * | 1975-03-17 | 1978-02-14 | The Raymond Lee Organization, Inc. | Telephone privacy device |
-
1979
- 1979-05-25 DE DE19792952814 patent/DE2952814A1/de not_active Ceased
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3514548A (en) * | 1967-04-12 | 1970-05-26 | Priva Phone Inc | Telephone apparatus for discriminating between desired and undesired calls |
US4074078A (en) * | 1975-03-17 | 1978-02-14 | The Raymond Lee Organization, Inc. | Telephone privacy device |
DE2634112A1 (de) * | 1976-02-02 | 1978-02-02 | Int Mobile Machines | Verfahren und schaltungsanordnung zum erkennen eines rufsignals |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3826100A1 (de) * | 1988-08-01 | 1990-02-08 | Licentia Gmbh | Gesteuerte telefonsperreinrichtung |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8131 | Rejection |