JPH089943Y2 - 着信回路 - Google Patents
着信回路Info
- Publication number
- JPH089943Y2 JPH089943Y2 JP10536389U JP10536389U JPH089943Y2 JP H089943 Y2 JPH089943 Y2 JP H089943Y2 JP 10536389 U JP10536389 U JP 10536389U JP 10536389 U JP10536389 U JP 10536389U JP H089943 Y2 JPH089943 Y2 JP H089943Y2
- Authority
- JP
- Japan
- Prior art keywords
- impedance
- sounding body
- pseudo load
- current
- impedance element
- 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 9
- 239000003990 capacitor Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10536389U JPH089943Y2 (ja) | 1989-09-11 | 1989-09-11 | 着信回路 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10536389U JPH089943Y2 (ja) | 1989-09-11 | 1989-09-11 | 着信回路 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0346260U JPH0346260U (enrdf_load_stackoverflow) | 1991-04-30 |
JPH089943Y2 true JPH089943Y2 (ja) | 1996-03-21 |
Family
ID=31654124
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10536389U Expired - Lifetime JPH089943Y2 (ja) | 1989-09-11 | 1989-09-11 | 着信回路 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH089943Y2 (enrdf_load_stackoverflow) |
-
1989
- 1989-09-11 JP JP10536389U patent/JPH089943Y2/ja not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH0346260U (enrdf_load_stackoverflow) | 1991-04-30 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CA2017551A1 (en) | Hearing assist telephone | |
US6831976B1 (en) | Telephone line-powered power supply for ancillary equipment and method of operation thereof | |
JPH089943Y2 (ja) | 着信回路 | |
US4500754A (en) | Solid state off hook phone line load | |
US4135062A (en) | Electric network for use in a subscriber's loop | |
EP0600644A1 (en) | Ring-trip detection using ring voltage and current | |
JP2504156Y2 (ja) | 電話装置 | |
CA1112776A (en) | Electronic tone ringer | |
US4191859A (en) | Loop, dial pulse and ring trip detection circuit with capacitive shunt network | |
EP0748553B1 (en) | Telephone dialling monitoring and route selecting apparatus | |
KR0120406B1 (ko) | 자동 착신 스피커폰 전환기 | |
JP3071180B2 (ja) | 電話の割込防止装置 | |
JPS61260748A (ja) | 電話用防側音回路装置 | |
JP2833742B2 (ja) | リングトリップ回路 | |
JPS589412Y2 (ja) | 電話機の不要な信号器音サプレサ | |
CA1160777A (en) | Hold circuit for telephone system | |
KR890005718Y1 (ko) | 전화기의 선로상태 감지회로 | |
KR960005185Y1 (ko) | 내선 가입자 회로의 링 트립 방지 회로 | |
US6842520B2 (en) | Telephone | |
JP2947965B2 (ja) | リンガー制御回路 | |
JPH04104546A (ja) | 極性反転検出方式 | |
JPH0595573A (ja) | リンガ検出/極性反転検出回路 | |
JPH0315874B2 (enrdf_load_stackoverflow) | ||
JPH04284043A (ja) | 電話機 | |
JPS6387849A (ja) | 共鳴り防止回路 |