KR920001596U - 전화기의 훅크 온/오프 상태 검출회로 - Google Patents
전화기의 훅크 온/오프 상태 검출회로Info
- Publication number
- KR920001596U KR920001596U KR2019900008747U KR900008747U KR920001596U KR 920001596 U KR920001596 U KR 920001596U KR 2019900008747 U KR2019900008747 U KR 2019900008747U KR 900008747 U KR900008747 U KR 900008747U KR 920001596 U KR920001596 U KR 920001596U
- Authority
- KR
- South Korea
- Prior art keywords
- detection circuit
- status detection
- phone hook
- hook
- phone
- Prior art date
Links
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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M2201/00—Electronic components, circuits, software, systems or apparatus used in telephone systems
- H04M2201/52—Telephonic communication in combination with fax communication
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Telephonic Communication Services (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR2019900008747U KR920008619Y1 (ko) | 1990-06-21 | 1990-06-21 | 전화기의 훅크 온/오프 상태 검출회로 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR2019900008747U KR920008619Y1 (ko) | 1990-06-21 | 1990-06-21 | 전화기의 훅크 온/오프 상태 검출회로 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR920001596U true KR920001596U (ko) | 1992-01-28 |
KR920008619Y1 KR920008619Y1 (ko) | 1992-12-05 |
Family
ID=19300093
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR2019900008747U KR920008619Y1 (ko) | 1990-06-21 | 1990-06-21 | 전화기의 훅크 온/오프 상태 검출회로 |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR920008619Y1 (ko) |
-
1990
- 1990-06-21 KR KR2019900008747U patent/KR920008619Y1/ko not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
KR920008619Y1 (ko) | 1992-12-05 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
A201 | Request for examination | ||
E701 | Decision to grant or registration of patent right | ||
REGI | Registration of establishment | ||
FPAY | Annual fee payment |
Payment date: 20041129 Year of fee payment: 13 |
|
EXPY | Expiration of term |