PT102250A - Equipment for protecting the closed circuit of a subscriber telephone line against fraudulent use - Google Patents
Equipment for protecting the closed circuit of a subscriber telephone line against fraudulent use Download PDFInfo
- Publication number
- PT102250A PT102250A PT10225099A PT10225099A PT102250A PT 102250 A PT102250 A PT 102250A PT 10225099 A PT10225099 A PT 10225099A PT 10225099 A PT10225099 A PT 10225099A PT 102250 A PT102250 A PT 102250A
- Authority
- PT
- Portugal
- Prior art keywords
- line
- protecting
- equipment
- closed circuit
- subscriber
- Prior art date
Links
Landscapes
- Interface Circuits In Exchanges (AREA)
- Prepayment Telephone Systems (AREA)
- Meter Arrangements (AREA)
- Telephonic Communication Services (AREA)
Abstract
Equipment for protecting the subscriber telephone loop, closed circuit, intended to prevent the making of fraudulent calls by third parties, consisting of a subscriber element 1 and a reader element 6, the former of which incorporates a power supply module 3 from its own line, another module 5 for line monitoring to detect pick-up outside the subscriber's system and cutting of the line, for which it has line drop detector units 16, outside pick-up detector units 15, and a unit 4 for monitoring and memorising of data on fraudulent calls, consisting of a switching unit 14 and a control unit 17, and able to determine the short circuiting of the network by injecting a predetermined frequency signal; the reader device 6 extracts the control data 17 and has means 23 of processing same and means 24 of visual display of same. <IMAGE>
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES9800208A ES2136578B1 (en) | 1998-02-04 | 1998-02-04 | PROTECTION EQUIPMENT OF THE TELEPHONE LOOP OF SUBSCRIBER. |
Publications (2)
Publication Number | Publication Date |
---|---|
PT102250A true PT102250A (en) | 1999-08-31 |
PT102250B PT102250B (en) | 2000-08-31 |
Family
ID=8302626
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PT10225099A PT102250B (en) | 1998-02-04 | 1999-02-03 | CLOSED CIRCUIT PROTECTION EQUIPMENT OF TELEPHONE LINE OF SUBSCRIBER AGAINST FRAUDULENT USE |
Country Status (6)
Country | Link |
---|---|
AR (1) | AR014537A1 (en) |
BR (1) | BR9900537A (en) |
ES (1) | ES2136578B1 (en) |
MA (1) | MA24755A1 (en) |
PE (1) | PE20000363A1 (en) |
PT (1) | PT102250B (en) |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4969178A (en) * | 1989-10-26 | 1990-11-06 | Telecommunication Laboratories, Directorate General of Telecommunications , Ministry of Communications | Multipurpose subscriber local line monitoring device |
FR2674397A1 (en) * | 1991-03-20 | 1992-09-25 | Regnier Marc | Device for monitoring a subscriber line allowing detection and recording of electrical signals related to an illicit tapping |
FR2691599B1 (en) * | 1992-05-22 | 2001-08-10 | France Telecom | Device for controlling access to a telephone line. |
GB9226779D0 (en) * | 1992-12-23 | 1993-02-17 | Plessey Telecomm | Customer identity validation |
JPH0795284A (en) * | 1993-09-20 | 1995-04-07 | Fujitsu Ltd | Communications terminal provided with function for detecting and preventing lie branching |
US5559874A (en) * | 1995-03-13 | 1996-09-24 | Panosh; Richard | Telephone service protection device |
FR2765061B1 (en) * | 1997-06-23 | 1999-10-08 | Jean Noel Bruere | ELECTRONIC DEVICE FOR DETECTING FRAUDULENT USES OF A TELEPHONE LINE AND FOR DETERRENCE AGAINST SUCH USES |
-
1998
- 1998-02-04 ES ES9800208A patent/ES2136578B1/en not_active Expired - Fee Related
-
1999
- 1999-02-03 MA MA25451A patent/MA24755A1/en unknown
- 1999-02-03 PT PT10225099A patent/PT102250B/en active IP Right Grant
- 1999-02-03 PE PE1999000085A patent/PE20000363A1/en not_active Application Discontinuation
- 1999-02-04 AR ARP990100461 patent/AR014537A1/en unknown
- 1999-02-04 BR BR9900537-9A patent/BR9900537A/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
AR014537A1 (en) | 2001-02-28 |
PT102250B (en) | 2000-08-31 |
PE20000363A1 (en) | 2000-04-10 |
BR9900537A (en) | 2001-03-20 |
ES2136578A1 (en) | 1999-11-16 |
MA24755A1 (en) | 1999-10-01 |
ES2136578B1 (en) | 2000-08-01 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
BB1A | Laying open of patent application |
Effective date: 19990416 |
|
FG3A | Patent granted, date of granting |
Effective date: 20000522 |