FR2258753A1 - Telephone STD monitoring device - prevents prohibited dialling of trunk calls while allowing local calls from office, shop etc. - Google Patents
Telephone STD monitoring device - prevents prohibited dialling of trunk calls while allowing local calls from office, shop etc.Info
- Publication number
- FR2258753A1 FR2258753A1 FR7435749A FR7435749A FR2258753A1 FR 2258753 A1 FR2258753 A1 FR 2258753A1 FR 7435749 A FR7435749 A FR 7435749A FR 7435749 A FR7435749 A FR 7435749A FR 2258753 A1 FR2258753 A1 FR 2258753A1
- Authority
- FR
- France
- Prior art keywords
- calls
- control element
- telephone
- dialling
- std
- 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.)
- Withdrawn
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/66—Substation equipment, e.g. for use by subscribers with means for preventing unauthorised or fraudulent calling
- H04M1/677—Preventing the dialling or sending of predetermined telephone numbers or selected types of telephone numbers, e.g. long distance numbers
Landscapes
- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Signal Processing (AREA)
- Telephone Set Structure (AREA)
Abstract
A control element near the outer edge of the dial in the area of the finger hole for the digit "O" monitors the dial angle of rotation when the first selected digit is "O". A sensor on the telephone instrument is operated by the control element return movement. It controls a release element, and the handset on the telephone instrument also controls a release element connected to the control element. The latter consists of a projection on the dial. The "O" control element consists of a spring-loaded angle lever, and the sensor consists of a spring loaded cam disc projecting into the control element path. It opposite end supports the "O" control lever.
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP873574A JPS50104805A (en) | 1974-01-19 | 1974-01-19 | |
JP873474A JPS50104804A (en) | 1974-01-19 | 1974-01-19 | |
JP1964674A JPS50114906A (en) | 1974-02-19 | 1974-02-19 | |
JP1964574A JPS50114905A (en) | 1974-02-19 | 1974-02-19 | |
JP5043474A JPS50142107A (en) | 1974-05-07 | 1974-05-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2258753A1 true FR2258753A1 (en) | 1975-08-18 |
Family
ID=27518978
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7435749A Withdrawn FR2258753A1 (en) | 1974-01-19 | 1974-10-24 | Telephone STD monitoring device - prevents prohibited dialling of trunk calls while allowing local calls from office, shop etc. |
Country Status (5)
Country | Link |
---|---|
AU (1) | AU7316674A (en) |
DE (1) | DE2451069A1 (en) |
FR (1) | FR2258753A1 (en) |
IT (1) | IT1024773B (en) |
SE (1) | SE7411340L (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BG37515A1 (en) * | 1983-02-02 | 1985-06-14 | Popov | Device for limiting telephone dial selection |
BG37516A1 (en) * | 1983-03-14 | 1985-06-14 | Popov | Device for limiting telephone dial selection |
-
1974
- 1974-09-09 SE SE7411340A patent/SE7411340L/ not_active Application Discontinuation
- 1974-09-10 AU AU73166/74A patent/AU7316674A/en not_active Expired
- 1974-10-24 FR FR7435749A patent/FR2258753A1/en not_active Withdrawn
- 1974-10-26 DE DE19742451069 patent/DE2451069A1/en active Pending
- 1974-11-07 IT IT7027074A patent/IT1024773B/en active
Also Published As
Publication number | Publication date |
---|---|
SE7411340L (en) | 1975-07-21 |
DE2451069A1 (en) | 1975-07-24 |
IT1024773B (en) | 1978-07-20 |
AU7316674A (en) | 1976-03-18 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |