JPS5251803A - Toll call limiting device - Google Patents
Toll call limiting deviceInfo
- Publication number
- JPS5251803A JPS5251803A JP12712275A JP12712275A JPS5251803A JP S5251803 A JPS5251803 A JP S5251803A JP 12712275 A JP12712275 A JP 12712275A JP 12712275 A JP12712275 A JP 12712275A JP S5251803 A JPS5251803 A JP S5251803A
- Authority
- JP
- Japan
- Prior art keywords
- limiting device
- toll call
- call limiting
- toll
- transmitters
- 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.)
- Pending
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)
Abstract
PURPOSE:A sensor lever is equipped at the outer rim of telephone dial in order to limit the toll call of transmitters, thus ensuring an effective control of business telephone communication.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12712275A JPS5251803A (en) | 1975-10-22 | 1975-10-22 | Toll call limiting device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12712275A JPS5251803A (en) | 1975-10-22 | 1975-10-22 | Toll call limiting device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5251803A true JPS5251803A (en) | 1977-04-26 |
Family
ID=14952140
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12712275A Pending JPS5251803A (en) | 1975-10-22 | 1975-10-22 | Toll call limiting device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5251803A (en) |
-
1975
- 1975-10-22 JP JP12712275A patent/JPS5251803A/en active Pending
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