CN1083675C - 一种声频音调信号处理装置 - Google Patents
一种声频音调信号处理装置 Download PDFInfo
- Publication number
- CN1083675C CN1083675C CN96102837A CN96102837A CN1083675C CN 1083675 C CN1083675 C CN 1083675C CN 96102837 A CN96102837 A CN 96102837A CN 96102837 A CN96102837 A CN 96102837A CN 1083675 C CN1083675 C CN 1083675C
- Authority
- CN
- China
- Prior art keywords
- signal
- audio frequency
- tone
- switching center
- signal processing
- 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
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q1/00—Details of selecting apparatus or arrangements
- H04Q1/18—Electrical details
- H04Q1/30—Signalling arrangements; Manipulation of signalling currents
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q1/00—Details of selecting apparatus or arrangements
- H04Q1/18—Electrical details
- H04Q1/30—Signalling arrangements; Manipulation of signalling currents
- H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Monitoring And Testing Of Exchanges (AREA)
- Mobile Radio Communication Systems (AREA)
- Devices For Supply Of Signal Current (AREA)
- Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
- Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
Abstract
Description
Claims (3)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019950007760A KR960040039A (ko) | 1995-04-03 | 1995-04-03 | 디지탈 이동통신 교환기 (msc)의 가청 톤 전용 신호 서비스 장치 및 방법 |
KR7760/95 | 1995-04-03 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1136261A CN1136261A (zh) | 1996-11-20 |
CN1083675C true CN1083675C (zh) | 2002-04-24 |
Family
ID=19411468
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN96102837A Expired - Fee Related CN1083675C (zh) | 1995-04-03 | 1996-04-03 | 一种声频音调信号处理装置 |
Country Status (4)
Country | Link |
---|---|
US (1) | US5887248A (zh) |
JP (1) | JPH08331655A (zh) |
KR (1) | KR960040039A (zh) |
CN (1) | CN1083675C (zh) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100206474B1 (ko) * | 1997-02-26 | 1999-07-01 | 윤종용 | 클럭발생장치의 상태 및 이중화 관리방법 |
US6449286B1 (en) * | 1998-09-10 | 2002-09-10 | Rockwell Semiconductor Systems, Inc. | R2 multi-frequency compelled signalling using a DSP on a network termination card |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5091904A (en) * | 1987-12-11 | 1992-02-25 | Korea Electronics And Telecommunications | General signaling service unit of electronic switching system |
US5297191A (en) * | 1990-09-28 | 1994-03-22 | At&T Bell Laboratories | Method and apparatus for remotely programming a wireless telephone set |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59181895A (ja) * | 1983-03-31 | 1984-10-16 | Hitachi Ltd | 時分割交換機 |
US4756018A (en) * | 1986-04-05 | 1988-07-05 | Nec Corporation | Multiple access communication system having loop-check circuitry for switching intraoffice connections |
CA1279393C (en) * | 1987-01-23 | 1991-01-22 | A. David Milton | Digital signal processing system |
US4860281A (en) * | 1988-02-29 | 1989-08-22 | Motorola, Inc. | Individual subchannel loopback in the PCM interfaces of a digital telephone exchange with control of the outbound path |
JPH01270484A (ja) * | 1988-04-22 | 1989-10-27 | Toshiba Corp | ディジタル構内交換機 |
CA2110029C (en) * | 1992-11-27 | 1997-05-06 | Shigeru Otsuka | Mobile radio communication system |
-
1995
- 1995-04-03 KR KR1019950007760A patent/KR960040039A/ko not_active Application Discontinuation
-
1996
- 1996-02-22 US US08/603,897 patent/US5887248A/en not_active Expired - Lifetime
- 1996-03-26 JP JP8070532A patent/JPH08331655A/ja active Pending
- 1996-04-03 CN CN96102837A patent/CN1083675C/zh not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5091904A (en) * | 1987-12-11 | 1992-02-25 | Korea Electronics And Telecommunications | General signaling service unit of electronic switching system |
US5297191A (en) * | 1990-09-28 | 1994-03-22 | At&T Bell Laboratories | Method and apparatus for remotely programming a wireless telephone set |
Also Published As
Publication number | Publication date |
---|---|
JPH08331655A (ja) | 1996-12-13 |
KR960040039A (ko) | 1996-11-25 |
CN1136261A (zh) | 1996-11-20 |
US5887248A (en) | 1999-03-23 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C06 | Publication | ||
PB01 | Publication | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
ASS | Succession or assignment of patent right |
Owner name: CO., LTD. HYUNDAI INFORMATION TONG Free format text: FORMER OWNER: HYUNDAI ELECTRONICS INDUSTRIES CO., LTD. Effective date: 20040205 |
|
C41 | Transfer of patent application or patent right or utility model | ||
TR01 | Transfer of patent right |
Effective date of registration: 20040205 Address after: Gyeonggi Do, South Korea Patentee after: Hyundai Information Tong Co., Ltd. Address before: Gyeonggi Do, South Korea Patentee before: Hyundai Electronics Industries Co., Ltd. |
|
ASS | Succession or assignment of patent right |
Owner name: UT STARCOM KOREA LTD. Free format text: FORMER OWNER: CO., LTD. HYUNDAI INFORMATION TONG Effective date: 20040604 |
|
C41 | Transfer of patent application or patent right or utility model | ||
TR01 | Transfer of patent right |
Effective date of registration: 20040604 Address after: Gyeonggi Do, South Korea Patentee after: Utstarcom Korea Ltd. Address before: Gyeonggi Do, South Korea Patentee before: Hyundai Information Tong Co., Ltd. |
|
C17 | Cessation of patent right | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20020424 |