KR200301283Y1 - 루프 검출 기능을 이용한 링/다운 유니트 - Google Patents
루프 검출 기능을 이용한 링/다운 유니트 Download PDFInfo
- Publication number
- KR200301283Y1 KR200301283Y1 KR2019970043930U KR19970043930U KR200301283Y1 KR 200301283 Y1 KR200301283 Y1 KR 200301283Y1 KR 2019970043930 U KR2019970043930 U KR 2019970043930U KR 19970043930 U KR19970043930 U KR 19970043930U KR 200301283 Y1 KR200301283 Y1 KR 200301283Y1
- Authority
- KR
- South Korea
- Prior art keywords
- signal
- ring
- called party
- ring signal
- telephone
- 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 - Fee Related
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 11
- 230000000903 blocking effect Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 10
- 230000005540 biological transmission Effects 0.000 description 3
- 230000006870 function Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 1
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
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/02—Calling substations, e.g. by ringing
- H04M3/04—Calling substations, e.g. by ringing the calling signal being supplied from the final selector
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/02—Calling substations, e.g. by ringing
- H04M3/06—Calling substations, e.g. by ringing the calling signal being supplied from the subscriber's line circuit
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Interface Circuits In Exchanges (AREA)
Abstract
Description
Claims (2)
- 발신측 가입자의 링 신호를 검출하는 링 신호 검출부와, 상기 검출한 링 신호를 디지털 신호로 변환시키는 발신측 신호처리부와, 상기 변환된 디지털 신호를 분석하여 착신측 릴레이에 공급하는 착신측 신호처리부에 있어서, 상기 착신측 전화기에 링 신호가 공급되고 있는 동안 착신자가 응답되면 그 응답신호를 검출하기 위한 루프 검출부와, 상기 착신자의 응답신호를 "0" 으로 세팅하여 링 신호 공급을 차단시키기위한 링 신호처리부를 포함하는 것을 특징으로 하는 루프 검출 기능을 이용한 링/다운 유니트.
- 제 1항에 있어서, 상기 링 신호처리부는 응답신호와 수신신호를 검출하는 디플립플롭과, 상기 검출된 신호를 반전시키는 인버터와, 상기 반전된 신호를 논리화하는 논리소자를 포함하는 것을 특징으로 하는 루프 검출 기능을 이용한 링/다운 유니트.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR2019970043930U KR200301283Y1 (ko) | 1997-12-30 | 1997-12-30 | 루프 검출 기능을 이용한 링/다운 유니트 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR2019970043930U KR200301283Y1 (ko) | 1997-12-30 | 1997-12-30 | 루프 검출 기능을 이용한 링/다운 유니트 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR19990031221U KR19990031221U (ko) | 1999-07-26 |
KR200301283Y1 true KR200301283Y1 (ko) | 2003-03-17 |
Family
ID=49398970
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR2019970043930U Expired - Fee Related KR200301283Y1 (ko) | 1997-12-30 | 1997-12-30 | 루프 검출 기능을 이용한 링/다운 유니트 |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR200301283Y1 (ko) |
-
1997
- 1997-12-30 KR KR2019970043930U patent/KR200301283Y1/ko not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
KR19990031221U (ko) | 1999-07-26 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
UA0108 | Application for utility model registration |
Comment text: Application for Utility Model Registration Patent event code: UA01011R08D Patent event date: 19971230 |
|
UG1501 | Laying open of application | ||
A201 | Request for examination | ||
UA0201 | Request for examination |
Patent event date: 20001228 Patent event code: UA02012R01D Comment text: Request for Examination of Application Patent event date: 19971230 Patent event code: UA02011R01I Comment text: Application for Utility Model Registration |
|
E701 | Decision to grant or registration of patent right | ||
UE0701 | Decision of registration |
Patent event date: 20021024 Comment text: Decision to Grant Registration Patent event code: UE07011S01D |
|
REGI | Registration of establishment | ||
UR0701 | Registration of establishment |
Patent event date: 20030106 Patent event code: UR07011E01D Comment text: Registration of Establishment |
|
UR1002 | Payment of registration fee |
Start annual number: 1 End annual number: 3 Payment date: 20030107 |
|
UG1601 | Publication of registration | ||
LAPS | Lapse due to unpaid annual fee | ||
UC1903 | Unpaid annual fee |
Termination date: 20061209 Termination category: Default of registration fee |