JPH0315874B2 - - Google Patents
Info
- Publication number
- JPH0315874B2 JPH0315874B2 JP17971582A JP17971582A JPH0315874B2 JP H0315874 B2 JPH0315874 B2 JP H0315874B2 JP 17971582 A JP17971582 A JP 17971582A JP 17971582 A JP17971582 A JP 17971582A JP H0315874 B2 JPH0315874 B2 JP H0315874B2
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- hook
- diode
- input
- ring trip
- 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
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M19/00—Current supply arrangements for telephone systems
- H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone
- H04M19/026—Arrangements for interrupting the ringing current
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Devices For Supply Of Signal Current (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17971582A JPS5970067A (ja) | 1982-10-15 | 1982-10-15 | リングトリツプ回路 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17971582A JPS5970067A (ja) | 1982-10-15 | 1982-10-15 | リングトリツプ回路 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5970067A JPS5970067A (ja) | 1984-04-20 |
| JPH0315874B2 true JPH0315874B2 (enrdf_load_stackoverflow) | 1991-03-04 |
Family
ID=16070601
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17971582A Granted JPS5970067A (ja) | 1982-10-15 | 1982-10-15 | リングトリツプ回路 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5970067A (enrdf_load_stackoverflow) |
-
1982
- 1982-10-15 JP JP17971582A patent/JPS5970067A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5970067A (ja) | 1984-04-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4529845A (en) | Optical coupling interface circuit for telephone line ringing signal indication or detection | |
| US4995111A (en) | Ring trip circuit for subscriber telephone | |
| US4686700A (en) | Telephone off-hook detector circuit | |
| US5671272A (en) | Current mode ring trip detector | |
| US4776007A (en) | Solid state trunk circuit | |
| US4500754A (en) | Solid state off hook phone line load | |
| US4135062A (en) | Electric network for use in a subscriber's loop | |
| JPH0315874B2 (enrdf_load_stackoverflow) | ||
| US5329584A (en) | Interface circuit to quickly establish a loop current | |
| CA2082321C (en) | Circuit to detect the hook status and ringing at the cpe end of a telephone network | |
| JPS58501610A (ja) | 通信ラインのための検出回路 | |
| EP0056810A4 (en) | LOOP DETECTION CIRCUIT FOR USE IN THE INTERFACE OF A SUBSCRIBER LOOP. | |
| US5289537A (en) | On-hook transmission circuit in cable line | |
| JPH089943Y2 (ja) | 着信回路 | |
| JPS625758A (ja) | 電話回線電圧検出回路 | |
| US4593156A (en) | Grounded tip detector | |
| JP3322731B2 (ja) | 交換機の加入者回路におけるループ検出方式 | |
| JPS5940340B2 (ja) | リングトリツプ回路 | |
| JPH0415657B2 (enrdf_load_stackoverflow) | ||
| JPS6135046A (ja) | 呼出信号送出回路 | |
| JP2642446B2 (ja) | リングトリップ回路 | |
| JPS63129763A (ja) | 呼出信号検出装置 | |
| KR0167376B1 (ko) | 트랜스포머형 가입자 정합회로의 링트립 감지회로 | |
| CA1233584A (en) | High impedance transient resistant transistorized hold circuit | |
| JPH0754942B2 (ja) | 端末機器の着信検出回路 |