JPS53128207A - Call tracing system for telephone - Google Patents
Call tracing system for telephoneInfo
- Publication number
- JPS53128207A JPS53128207A JP4206477A JP4206477A JPS53128207A JP S53128207 A JPS53128207 A JP S53128207A JP 4206477 A JP4206477 A JP 4206477A JP 4206477 A JP4206477 A JP 4206477A JP S53128207 A JPS53128207 A JP S53128207A
- Authority
- JP
- Japan
- Prior art keywords
- telephone
- tracing system
- call tracing
- transmission station
- call
- 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
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/42—Systems providing special services or facilities to subscribers
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4206477A JPS53128207A (en) | 1977-04-14 | 1977-04-14 | Call tracing system for telephone |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4206477A JPS53128207A (en) | 1977-04-14 | 1977-04-14 | Call tracing system for telephone |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS53128207A true JPS53128207A (en) | 1978-11-09 |
JPS5741869B2 JPS5741869B2 (ja) | 1982-09-06 |
Family
ID=12625660
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4206477A Granted JPS53128207A (en) | 1977-04-14 | 1977-04-14 | Call tracing system for telephone |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS53128207A (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5825752A (ja) * | 1981-08-07 | 1983-02-16 | Kazutoshi Nakao | 特定電番に対する発呼電番の探知装置 |
JPS60171852A (ja) * | 1984-02-15 | 1985-09-05 | Fujitsu Ltd | 悪意呼検出方式 |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0121689Y2 (ja) * | 1985-01-24 | 1989-06-28 | ||
JPH0535968Y2 (ja) * | 1986-01-25 | 1993-09-10 |
-
1977
- 1977-04-14 JP JP4206477A patent/JPS53128207A/ja active Granted
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5825752A (ja) * | 1981-08-07 | 1983-02-16 | Kazutoshi Nakao | 特定電番に対する発呼電番の探知装置 |
JPS60171852A (ja) * | 1984-02-15 | 1985-09-05 | Fujitsu Ltd | 悪意呼検出方式 |
Also Published As
Publication number | Publication date |
---|---|
JPS5741869B2 (ja) | 1982-09-06 |
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