JPH0329221B2 - - Google Patents
Info
- Publication number
- JPH0329221B2 JPH0329221B2 JP58211502A JP21150283A JPH0329221B2 JP H0329221 B2 JPH0329221 B2 JP H0329221B2 JP 58211502 A JP58211502 A JP 58211502A JP 21150283 A JP21150283 A JP 21150283A JP H0329221 B2 JPH0329221 B2 JP H0329221B2
- Authority
- JP
- Japan
- Prior art keywords
- signal
- line
- detection
- telephone
- state
- 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.)
- Expired - Lifetime
Links
- 238000001514 detection method Methods 0.000 claims description 47
- 239000003990 capacitor Substances 0.000 claims description 27
- 230000000903 blocking effect Effects 0.000 claims description 5
- 238000000034 method Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/82—Line monitoring circuits for call progress or status discrimination
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP58211502A JPS60103758A (ja) | 1983-11-09 | 1983-11-09 | 自動ダイヤル装置の回線状態判別回路 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP58211502A JPS60103758A (ja) | 1983-11-09 | 1983-11-09 | 自動ダイヤル装置の回線状態判別回路 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS60103758A JPS60103758A (ja) | 1985-06-08 |
JPH0329221B2 true JPH0329221B2 (en]) | 1991-04-23 |
Family
ID=16606998
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP58211502A Granted JPS60103758A (ja) | 1983-11-09 | 1983-11-09 | 自動ダイヤル装置の回線状態判別回路 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS60103758A (en]) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6238662A (ja) * | 1985-08-14 | 1987-02-19 | Canon Inc | 画像通信装置 |
JP4929977B2 (ja) * | 2006-10-27 | 2012-05-09 | 日本精工株式会社 | トロイダル型無段変速機 |
-
1983
- 1983-11-09 JP JP58211502A patent/JPS60103758A/ja active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS60103758A (ja) | 1985-06-08 |
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