KR920020900A - Trunk Line Alert Ring Generation Circuit and Method - Google Patents
Trunk Line Alert Ring Generation Circuit and Method Download PDFInfo
- Publication number
- KR920020900A KR920020900A KR1019910006426A KR910006426A KR920020900A KR 920020900 A KR920020900 A KR 920020900A KR 1019910006426 A KR1019910006426 A KR 1019910006426A KR 910006426 A KR910006426 A KR 910006426A KR 920020900 A KR920020900 A KR 920020900A
- Authority
- KR
- South Korea
- Prior art keywords
- bell
- trunk line
- alarm bell
- incoming
- alarm
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/02—Calling substations, e.g. by ringing
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Sub-Exchange Stations And Push- Button Telephones (AREA)
Abstract
내용 없음.No content.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.
제3도는 본 발명의 블럭도.3 is a block diagram of the present invention.
제4도는 제3도중 경보벨 발생부의 구체 회로도.4 is a detailed circuit diagram of the alarm bell generating unit of FIG.
제6도는 본 발명에 따른 국선착신 서비스 흐름도.6 is a flowchart of a trunk line incoming service according to the present invention.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019910006426A KR940005218B1 (en) | 1991-04-22 | 1991-04-22 | Circuit and method to generate ringing |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019910006426A KR940005218B1 (en) | 1991-04-22 | 1991-04-22 | Circuit and method to generate ringing |
Publications (2)
Publication Number | Publication Date |
---|---|
KR920020900A true KR920020900A (en) | 1992-11-21 |
KR940005218B1 KR940005218B1 (en) | 1994-06-13 |
Family
ID=19313537
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019910006426A KR940005218B1 (en) | 1991-04-22 | 1991-04-22 | Circuit and method to generate ringing |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR940005218B1 (en) |
-
1991
- 1991-04-22 KR KR1019910006426A patent/KR940005218B1/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
KR940005218B1 (en) | 1994-06-13 |
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Legal Events
Date | Code | Title | Description |
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A201 | Request for examination | ||
E902 | Notification of reason for refusal | ||
G160 | Decision to publish patent application | ||
E701 | Decision to grant or registration of patent right | ||
GRNT | Written decision to grant | ||
FPAY | Annual fee payment |
Payment date: 20080513 Year of fee payment: 15 |
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LAPS | Lapse due to unpaid annual fee |