ES254626U - Device for identification and control of telephone calls (Machine-translation by Google Translate, not legally binding) - Google Patents
Device for identification and control of telephone calls (Machine-translation by Google Translate, not legally binding)Info
- Publication number
- ES254626U ES254626U ES1980254626U ES254626U ES254626U ES 254626 U ES254626 U ES 254626U ES 1980254626 U ES1980254626 U ES 1980254626U ES 254626 U ES254626 U ES 254626U ES 254626 U ES254626 U ES 254626U
- Authority
- ES
- Spain
- Prior art keywords
- translation
- identification
- legally binding
- google translate
- machine
- 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.)
- Granted
Links
Landscapes
- Devices For Supply Of Signal Current (AREA)
Abstract
Device for identification and control of telephone calls, characterized in that it comprises an electronic circuit, capable of being connected to a line of telephone equipment, so that properly programmed said circuit, can prevent any type of call: urban, interurban, national or international, together and/or independently; said circuit comprises an input rectifier and a set of stabilizing transistors, which receive power when picking up the handset, so that when making the dialing, another transistor will conform the pulses, which are sent through a logic gate to a counter of impulses, with decimal output, so that a positive voltage appears on the corresponding output terminal, passing through the corresponding diode to a scale, so that if the output bridge is connected to one of the stabilizer transistors, the voltage passes to it, so that the power supply will stop driving through the first transistor, and the subscriber line will be placed on high impedance, preventing new markings, thus avoiding the call. (Machine-translation by Google Translate, not legally binding)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES1980254626U ES254626Y (en) | 1980-11-25 | 1980-11-25 | TELEPHONE CALL IDENTIFICATION AND CONTROL DEVICE |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES1980254626U ES254626Y (en) | 1980-11-25 | 1980-11-25 | TELEPHONE CALL IDENTIFICATION AND CONTROL DEVICE |
Publications (2)
Publication Number | Publication Date |
---|---|
ES254626U true ES254626U (en) | 1981-04-01 |
ES254626Y ES254626Y (en) | 1981-10-16 |
Family
ID=8411907
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES1980254626U Expired ES254626Y (en) | 1980-11-25 | 1980-11-25 | TELEPHONE CALL IDENTIFICATION AND CONTROL DEVICE |
Country Status (1)
Country | Link |
---|---|
ES (1) | ES254626Y (en) |
-
1980
- 1980-11-25 ES ES1980254626U patent/ES254626Y/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
ES254626Y (en) | 1981-10-16 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FD1K | Utility model lapsed |
Effective date: 19991110 |