IT8320173A0 - Lucchetto elettronico per lineaa telefonica d'utente. - Google Patents
Lucchetto elettronico per lineaa telefonica d'utente.Info
- Publication number
- IT8320173A0 IT8320173A0 IT8320173A IT2017383A IT8320173A0 IT 8320173 A0 IT8320173 A0 IT 8320173A0 IT 8320173 A IT8320173 A IT 8320173A IT 2017383 A IT2017383 A IT 2017383A IT 8320173 A0 IT8320173 A0 IT 8320173A0
- Authority
- IT
- Italy
- Prior art keywords
- user
- telephone line
- electronic padlock
- padlock
- electronic
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/66—Substation equipment, e.g. for use by subscribers with means for preventing unauthorised or fraudulent calling
- H04M1/667—Preventing unauthorised calls from a telephone set
- H04M1/67—Preventing unauthorised calls from a telephone set by electronic means
- H04M1/673—Preventing unauthorised calls from a telephone set by electronic means the user being required to key in a code
Landscapes
- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Signal Processing (AREA)
- Sub-Exchange Stations And Push- Button Telephones (AREA)
- Telephone Function (AREA)
- Interface Circuits In Exchanges (AREA)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT8320173A IT1207459B (it) | 1983-03-21 | 1983-03-21 | Lucchetto elettronico per lineaa telefonica d'utente. |
EP84200343A EP0126496A3 (en) | 1983-03-21 | 1984-03-12 | Electronic padlock for a subscriber telephone line |
DE198484200343T DE126496T1 (de) | 1983-03-21 | 1984-03-12 | Sperrvorrichtung fuer fernsprechteilnehmeranschluss. |
ES530736A ES8502826A1 (es) | 1983-03-21 | 1984-03-16 | Perfeccionamientos en los sistemas telefonicos |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT8320173A IT1207459B (it) | 1983-03-21 | 1983-03-21 | Lucchetto elettronico per lineaa telefonica d'utente. |
Publications (2)
Publication Number | Publication Date |
---|---|
IT8320173A0 true IT8320173A0 (it) | 1983-03-21 |
IT1207459B IT1207459B (it) | 1989-05-25 |
Family
ID=11164410
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT8320173A IT1207459B (it) | 1983-03-21 | 1983-03-21 | Lucchetto elettronico per lineaa telefonica d'utente. |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0126496A3 (it) |
DE (1) | DE126496T1 (it) |
ES (1) | ES8502826A1 (it) |
IT (1) | IT1207459B (it) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB8516398D0 (en) * | 1985-06-28 | 1985-07-31 | Newell T J | Telephone line access control |
FR2595526A1 (fr) * | 1986-03-07 | 1987-09-11 | Centomo Jean Louis | Dispositif antiviol de ligne telephonique |
WO1987007800A1 (en) * | 1986-06-13 | 1987-12-17 | Keith Askham | Telephone security system |
FR2621437B1 (fr) * | 1987-10-01 | 1990-01-05 | Genin Jacques | Dispositif de protection de ligne telephonique a dipole actif |
FR2655224B1 (fr) * | 1989-11-24 | 1995-06-02 | Marc Regnier | Dispositif de protection d'une ligne d'abonne contre un branchement illicite. |
EP0454262A1 (en) * | 1990-04-26 | 1991-10-30 | Koninklijke KPN N.V. | Electronic circuit for signalling and/or preventing improper use of a telephone subscriber line |
ES2070053B1 (es) * | 1992-12-10 | 1997-02-16 | Solac Telecom Sa | Telefono con discriminador de llamadas. |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1569257A (en) * | 1975-11-17 | 1980-06-11 | Murray L Q | Of a telephone instrument telephone security device for preventing unauthorised use |
AU525240B2 (en) * | 1977-08-01 | 1982-10-28 | Peter Samuel Vogel | Telephone security system |
CH628762A5 (de) * | 1978-06-12 | 1982-03-15 | Sodeco Compteurs De Geneve | Schaltungsanordnung fuer fernsprechteilnehmerstellen zur erfassung von waehlimpulsen. |
GB2086187A (en) * | 1980-10-09 | 1982-05-06 | Standard Telephones Cables Ltd | Toll barring |
US4358640A (en) * | 1980-11-25 | 1982-11-09 | Murray Leonard Q | Telephone security device |
-
1983
- 1983-03-21 IT IT8320173A patent/IT1207459B/it active
-
1984
- 1984-03-12 DE DE198484200343T patent/DE126496T1/de active Pending
- 1984-03-12 EP EP84200343A patent/EP0126496A3/en not_active Withdrawn
- 1984-03-16 ES ES530736A patent/ES8502826A1/es not_active Expired
Also Published As
Publication number | Publication date |
---|---|
EP0126496A3 (en) | 1985-05-15 |
EP0126496A2 (en) | 1984-11-28 |
ES530736A0 (es) | 1985-02-01 |
ES8502826A1 (es) | 1985-02-01 |
IT1207459B (it) | 1989-05-25 |
DE126496T1 (de) | 1985-02-28 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE3885683T2 (de) | Telefonapparat. | |
NL193098B (nl) | Snoerloos telefoontoestel. | |
FI844777L (fi) | 2,2'-iminobisetanolderivat. | |
ES287380Y (es) | Auricular. | |
DE3580958D1 (de) | Fernsprechgeraet. | |
ES263000Y (es) | "grifo". | |
IT8320173A0 (it) | Lucchetto elettronico per lineaa telefonica d'utente. | |
GB8416032D0 (en) | Telephone instruments | |
ES516683A0 (es) | "perfeccionamientos en tacografos". | |
FI843110A0 (fi) | 4'-halogenantracyklinglykosid. | |
DE68912198D1 (de) | Fernsprechschnittstellenschaltung. | |
AU89920S (en) | Telephone instrument | |
DE69014970D1 (de) | Elektronischer Fernsprechapparat. | |
IT8421955A0 (it) | 2-metil-4'-isopropil-2-pentenoilanilide. | |
DE68914417D1 (de) | Elektronischer Fernsprechapparat. | |
AU89177S (en) | Key telephone set | |
ES516468A0 (es) | "aparato telefonico". | |
GB2101451B (en) | Telephone instrument | |
GB2139054B (en) | Loudspeaking telephone instruments | |
FR2582890B3 (fr) | Multiplexeur-convertisseur pour centraux telephoniques electroniques numeriques. | |
ES266267Y (es) | "llave electronica". | |
ES266352Y (es) | "aparato discriminador telefonico". | |
GB2151881B (en) | Telephone instruments | |
KR910013333U (ko) | 전화기의 레퍼터리 다이알 회로 | |
AU89744S (en) | Telephone subset case |