KR870003667A - Automatic telephone line connection system - Google Patents
Automatic telephone line connection system Download PDFInfo
- Publication number
- KR870003667A KR870003667A KR1019850007059A KR850007059A KR870003667A KR 870003667 A KR870003667 A KR 870003667A KR 1019850007059 A KR1019850007059 A KR 1019850007059A KR 850007059 A KR850007059 A KR 850007059A KR 870003667 A KR870003667 A KR 870003667A
- Authority
- KR
- South Korea
- Prior art keywords
- rom
- handset
- ram
- switch
- generator
- Prior art date
Links
Landscapes
- Telephone Function (AREA)
Abstract
내용 없음No content
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.
첨부된 도면은 본 발명의 회로도이다.The accompanying drawings are circuit diagrams of the invention.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
A : 송수화기 B : 스위치부A: handset B: switch
C : 키보드 D : 벨C: Keyboard D: Bell
E : 메모리 펄스 발생기 F : 키보드 펄스 발생기E: Memory Pulse Generator F: Keyboard Pulse Generator
G : 송수화회로 H : 벨신호 발생기G: Handset Circuit H: Bell Signal Generator
T : 클럭발생기 TB1,2: 3-스테이트 버퍼T: Clock generator TB 1,2 : 3-state buffer
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019850007059A KR870003667A (en) | 1985-09-25 | 1985-09-25 | Automatic telephone line connection system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019850007059A KR870003667A (en) | 1985-09-25 | 1985-09-25 | Automatic telephone line connection system |
Publications (1)
Publication Number | Publication Date |
---|---|
KR870003667A true KR870003667A (en) | 1987-04-18 |
Family
ID=69467937
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019850007059A KR870003667A (en) | 1985-09-25 | 1985-09-25 | Automatic telephone line connection system |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR870003667A (en) |
-
1985
- 1985-09-25 KR KR1019850007059A patent/KR870003667A/en not_active Application Discontinuation
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
E902 | Notification of reason for refusal | ||
E601 | Decision to refuse application |