CA2000026A1 - Dispositif de confirmation de numerotation par une tonalite - Google Patents
Dispositif de confirmation de numerotation par une tonaliteInfo
- Publication number
- CA2000026A1 CA2000026A1 CA2000026A CA2000026A CA2000026A1 CA 2000026 A1 CA2000026 A1 CA 2000026A1 CA 2000026 A CA2000026 A CA 2000026A CA 2000026 A CA2000026 A CA 2000026A CA 2000026 A1 CA2000026 A1 CA 2000026A1
- Authority
- CA
- Canada
- Prior art keywords
- signal
- confirmation tone
- conversation
- output apparatus
- earphone
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/26—Devices for calling a subscriber
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Telephone Function (AREA)
- Headphones And Earphones (AREA)
- Telephone Set Structure (AREA)
- Noise Elimination (AREA)
- Circuit For Audible Band Transducer (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP63246518A JP2658270B2 (ja) | 1988-09-30 | 1988-09-30 | ダイヤル確認音出力回路 |
JP246518/1988 | 1988-09-30 |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2000026A1 true CA2000026A1 (fr) | 1990-03-31 |
CA2000026C CA2000026C (fr) | 1994-07-05 |
Family
ID=17149589
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002000026A Expired - Fee Related CA2000026C (fr) | 1988-09-30 | 1989-10-02 | Dispositif de confirmation de numerotation par une tonalite |
Country Status (6)
Country | Link |
---|---|
US (1) | US5128991A (fr) |
EP (1) | EP0361496B1 (fr) |
JP (1) | JP2658270B2 (fr) |
KR (1) | KR930001158B1 (fr) |
CA (1) | CA2000026C (fr) |
DE (1) | DE68923238T2 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100432209C (zh) * | 2001-07-30 | 2008-11-12 | 松下环境系统株式会社 | 微生物收集芯片、微生物收集试剂盒、微生物收集用过滤器 |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2560660Y2 (ja) * | 1991-03-29 | 1998-01-26 | 村田機械株式会社 | ワイヤレス電話機 |
GB2305334B (en) * | 1995-09-12 | 1999-10-13 | Sedley Bruce S | Commentary systems |
US20080304651A1 (en) * | 2007-06-06 | 2008-12-11 | Embarq Holdings Company, Llc | System and method for overcoming dual tone multi frequency (DTMF) signal attenuation in analog and packet based networks |
US8767930B2 (en) * | 2007-06-06 | 2014-07-01 | Centurylink Intellectual Property Llc | System and method for amplifying attenuated DTMF signals in a packet based network |
US8335308B2 (en) * | 2007-10-31 | 2012-12-18 | Centurylink Intellectual Property Llc | Method, system, and apparatus for attenuating dual-tone multiple frequency confirmation tones in a telephone set |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE204375C (fr) * | ||||
JPS5814114B2 (ja) * | 1979-10-04 | 1983-03-17 | 岩崎通信機株式会社 | ダイヤル確認音回路 |
US4406926A (en) * | 1980-12-19 | 1983-09-27 | International Telephone And Telegraph Corporation | Telephone station circuit using digital tone generation |
JPS609387B2 (ja) * | 1981-04-30 | 1985-03-09 | 富士通株式会社 | 電話機のダイヤル信号送出確認方式 |
US4442322A (en) * | 1982-07-07 | 1984-04-10 | Gte Automatic Electric Inc. | Electronic common switch having an improved receiver mating arrangement |
US4496799A (en) * | 1982-12-13 | 1985-01-29 | International Telephone And Telegraph Corporation | Handsfree telephone instrument using digital dial |
US4508938A (en) * | 1983-05-18 | 1985-04-02 | Comdial Telephone Systems, Inc. | Push-button dial for a telephone |
JPS60105354A (ja) * | 1983-11-14 | 1985-06-10 | Nec Corp | 電話機回路 |
JPS61103350A (ja) * | 1984-10-26 | 1986-05-21 | Nec Corp | Mfダイヤル発振確認音回路 |
JPS61225953A (ja) * | 1985-03-29 | 1986-10-07 | Nippon Telegr & Teleph Corp <Ntt> | 電話機 |
JPS61224642A (ja) * | 1985-03-29 | 1986-10-06 | Iwatsu Electric Co Ltd | ダイヤル信号送出回路 |
JPS61283261A (ja) * | 1985-06-10 | 1986-12-13 | Mitsubishi Electric Corp | ダイヤル確認音回路 |
US4669110A (en) * | 1985-10-25 | 1987-05-26 | Itt Corporation | Call progress tone system |
JPS6386945A (ja) * | 1986-09-30 | 1988-04-18 | Toshiba Corp | キ−入力確認音発生装置 |
-
1988
- 1988-09-30 JP JP63246518A patent/JP2658270B2/ja not_active Expired - Lifetime
-
1989
- 1989-09-29 EP EP89118029A patent/EP0361496B1/fr not_active Expired - Lifetime
- 1989-09-29 DE DE68923238T patent/DE68923238T2/de not_active Expired - Lifetime
- 1989-09-30 KR KR1019890014262A patent/KR930001158B1/ko not_active IP Right Cessation
- 1989-10-02 US US07/415,673 patent/US5128991A/en not_active Expired - Lifetime
- 1989-10-02 CA CA002000026A patent/CA2000026C/fr not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100432209C (zh) * | 2001-07-30 | 2008-11-12 | 松下环境系统株式会社 | 微生物收集芯片、微生物收集试剂盒、微生物收集用过滤器 |
Also Published As
Publication number | Publication date |
---|---|
KR930001158B1 (ko) | 1993-02-19 |
CA2000026C (fr) | 1994-07-05 |
DE68923238T2 (de) | 1996-01-04 |
JP2658270B2 (ja) | 1997-09-30 |
EP0361496A2 (fr) | 1990-04-04 |
US5128991A (en) | 1992-07-07 |
EP0361496B1 (fr) | 1995-06-28 |
KR900005734A (ko) | 1990-04-14 |
DE68923238D1 (de) | 1995-08-03 |
JPH0294954A (ja) | 1990-04-05 |
EP0361496A3 (fr) | 1991-11-21 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed |