DE69530634D1 - Anruferkennungsschaltung in einem Fernsprechapparat - Google Patents
Anruferkennungsschaltung in einem FernsprechapparatInfo
- Publication number
- DE69530634D1 DE69530634D1 DE69530634T DE69530634T DE69530634D1 DE 69530634 D1 DE69530634 D1 DE 69530634D1 DE 69530634 T DE69530634 T DE 69530634T DE 69530634 T DE69530634 T DE 69530634T DE 69530634 D1 DE69530634 D1 DE 69530634D1
- Authority
- DE
- Germany
- Prior art keywords
- caller
- circuit
- telephone set
- 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
Classifications
-
- 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
- H04M19/04—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone the ringing-current being generated at the substations
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Telephonic Communication Services (AREA)
- Telephone Function (AREA)
- Interface Circuits In Exchanges (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9403426A GB2287155B (en) | 1994-02-23 | 1994-02-23 | Telecommunications device |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69530634D1 true DE69530634D1 (de) | 2003-06-12 |
DE69530634T2 DE69530634T2 (de) | 2003-11-27 |
Family
ID=10750783
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69530634T Expired - Fee Related DE69530634T2 (de) | 1994-02-23 | 1995-01-19 | Anruferkennungsschaltung in einem Fernsprechapparat |
Country Status (5)
Country | Link |
---|---|
US (1) | US5699422A (de) |
EP (1) | EP0669750B1 (de) |
JP (1) | JPH07250131A (de) |
DE (1) | DE69530634T2 (de) |
GB (1) | GB2287155B (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5694465A (en) * | 1995-03-16 | 1997-12-02 | Advanced Micro Devices, Inc. | Integrated ringer for short telephone lines |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3974342A (en) * | 1973-09-27 | 1976-08-10 | Siemens Aktiengesellschaft | Switching arrangement for telecommunications systems |
IT1004617B (it) * | 1973-10-22 | 1976-07-20 | Oselt Centro Studi E Lab Telec | Ricevitore di segnali telefonici per centrali di commutazione elettroniche a logica centralizza ta |
IT1159706B (it) * | 1978-06-02 | 1987-03-04 | Cselt Centro Studi Lab Telecom | Circuito telefonico elettronico di linea d'utente |
US4417099A (en) * | 1980-11-03 | 1983-11-22 | Universal Data Systems, Inc. | Electro-optical isolator circuit for line powered modem |
US4319181A (en) * | 1980-12-24 | 1982-03-09 | Motorola, Inc. | Solid state current sensing circuit |
US4599494A (en) * | 1984-10-10 | 1986-07-08 | Motorola, Inc. | Ring sense telephone tone ringer circuit |
US4799144A (en) * | 1984-10-12 | 1989-01-17 | Alcatel Usa, Corp. | Multi-function communication board for expanding the versatility of a computer |
US4803719A (en) * | 1987-06-04 | 1989-02-07 | Ulrich Thomas J | Method for powering telephone apparatus and telephone apparatus powered directly from the telephone line without external power |
JP2820955B2 (ja) * | 1989-04-27 | 1998-11-05 | 株式会社リコー | 網制御装置 |
AU7216991A (en) * | 1990-02-08 | 1991-09-03 | Chesilvale Electronics Limited | Programmable telephone |
US5140631A (en) * | 1990-10-02 | 1992-08-18 | Intertex Data Ab | Apparatus and method for determining the state of a telephone line |
US5134403A (en) * | 1990-12-06 | 1992-07-28 | Hewlett-Packard Co. | High speed sampling and digitizing system requiring no hold circuit |
US5262713A (en) * | 1991-01-31 | 1993-11-16 | Texas Instruments Incorporated | Current mirror for sensing current |
FR2688606A1 (fr) * | 1992-03-12 | 1993-09-17 | Swatch Ag | Circuit d'interface pour appareil de communication. |
US5325427A (en) * | 1992-03-23 | 1994-06-28 | At&T Bell Laboratories | Apparatus and robust method for detecting tones |
US5500894A (en) * | 1993-12-03 | 1996-03-19 | Silicon Systems, Inc. | Telephone line interface with AC and DC transconductance loops |
-
1994
- 1994-02-23 GB GB9403426A patent/GB2287155B/en not_active Expired - Fee Related
-
1995
- 1995-01-19 DE DE69530634T patent/DE69530634T2/de not_active Expired - Fee Related
- 1995-01-19 EP EP95100683A patent/EP0669750B1/de not_active Expired - Lifetime
- 1995-02-16 US US08/389,380 patent/US5699422A/en not_active Expired - Lifetime
- 1995-02-22 JP JP7056823A patent/JPH07250131A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
GB2287155B (en) | 1998-08-12 |
EP0669750A2 (de) | 1995-08-30 |
GB9403426D0 (en) | 1994-04-13 |
EP0669750B1 (de) | 2003-05-07 |
DE69530634T2 (de) | 2003-11-27 |
US5699422A (en) | 1997-12-16 |
EP0669750A3 (de) | 1998-01-21 |
JPH07250131A (ja) | 1995-09-26 |
GB2287155A (en) | 1995-09-06 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE69327441D1 (de) | Gesprächsweiterreichung in einem schnurlosen Telefonsystem | |
DE69433990D1 (de) | Sequentieller Anruf in einem Telekommunikationssystem | |
DE69733517D1 (de) | Anrufunterscheidung in einem Fernsprechsystem | |
KR960009460A (ko) | 손을 쓸 필요가 없는 휴대용 무선 전화기 | |
FI953732A0 (fi) | Langaton puhelin | |
DE69422529D1 (de) | Telefonhandapparat | |
DE69516318D1 (de) | Telephon | |
DE69732018D1 (de) | Anrufbearbeitung in einem Fernmeldenetz | |
DE69840089D1 (de) | System für verzögerte Anrufbeantwortung in einem Telekommunikationssystem | |
FI971241A (fi) | Menetelmä puhelun muodostamiseksi puhelinverkossa | |
NO980216D0 (no) | Telefonsentral | |
DE69530634D1 (de) | Anruferkennungsschaltung in einem Fernsprechapparat | |
DE69507952D1 (de) | Verbindungsaufbau und dienstanruf in fernsprechnetzen | |
DE9400011U1 (de) | Telefonapparat | |
DE69418030D1 (de) | Weiterreichen in einen digitalen schnurlosen telefonsystem | |
ES1028395Y (es) | Teleportero mejorado | |
GB9413933D0 (en) | A telephone interface circuit | |
GB9419127D0 (en) | Telephone circuit | |
KR920001502U (ko) | 전화선 단자반 | |
KR960003173U (ko) | 전화선 단자접속구 | |
DE59611309D1 (de) | Signalkoppelschaltung in einem Fernsprechgerät | |
DE9415045U1 (de) | Telefonapparat | |
KR960032803U (ko) | 전화선 접속단자판 | |
DE69329858T2 (de) | Fernsprech-Teilnehmerschaltung mit einem galvanischen Trennungselement | |
KR960006590U (ko) | 전화벨 인식 텔레비젼 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8327 | Change in the person/name/address of the patent owner |
Owner name: FREESCALE SEMICONDUCTOR, INC., AUSTIN, TEX., US |
|
8339 | Ceased/non-payment of the annual fee |