BR8606792A - Comutador de linha telefonica - Google Patents
Comutador de linha telefonicaInfo
- Publication number
- BR8606792A BR8606792A BR8606792A BR8606792A BR8606792A BR 8606792 A BR8606792 A BR 8606792A BR 8606792 A BR8606792 A BR 8606792A BR 8606792 A BR8606792 A BR 8606792A BR 8606792 A BR8606792 A BR 8606792A
- Authority
- BR
- Brazil
- Prior art keywords
- telephone line
- line switch
- switch
- telephone
- line
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
- H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker
- H04Q3/52—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker using static devices in switching stages, e.g. electronic switching arrangements
-
- 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
- H04Q1/38—Signalling arrangements; Manipulation of signalling currents using combinations of direct currents of different amplitudes or polarities over line conductors or combination of line conductors
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/08—Modifications for protecting switching circuit against overcurrent or overvoltage
- H03K17/082—Modifications for protecting switching circuit against overcurrent or overvoltage by feedback from the output to the control circuit
- H03K17/0826—Modifications for protecting switching circuit against overcurrent or overvoltage by feedback from the output to the control circuit in bipolar transistor switches
-
- 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
- H04M1/30—Devices which can set up and transmit only one digit at a time
- H04M1/31—Devices which can set up and transmit only one digit at a time by interrupting current to generate trains of pulses; by periodically opening and closing contacts to generate trains of pulses
- H04M1/312—Devices which can set up and transmit only one digit at a time by interrupting current to generate trains of pulses; by periodically opening and closing contacts to generate trains of pulses pulses produced by electronic circuits
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M19/00—Current supply arrangements for telephone systems
- H04M19/08—Current supply arrangements for telephone systems with current supply sources at the substations
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Interface Circuits In Exchanges (AREA)
- Telephonic Communication Services (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AUPH153385 | 1985-07-18 | ||
PCT/AU1986/000182 WO1987000717A1 (en) | 1985-07-18 | 1986-07-07 | A telephone line switch |
Publications (1)
Publication Number | Publication Date |
---|---|
BR8606792A true BR8606792A (pt) | 1987-10-13 |
Family
ID=3771181
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BR8606792A BR8606792A (pt) | 1985-07-18 | 1986-07-07 | Comutador de linha telefonica |
Country Status (7)
Country | Link |
---|---|
US (1) | US4815126A (pt) |
EP (1) | EP0233892B1 (pt) |
JP (1) | JPH0795773B2 (pt) |
KR (1) | KR940011757B1 (pt) |
BR (1) | BR8606792A (pt) |
DE (1) | DE3689653T2 (pt) |
GB (1) | GB2187363B (pt) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1987006787A1 (en) * | 1986-04-30 | 1987-11-05 | Standard Telephones And Cables Pty. Limited | Telephone protection circuit |
WO1990007835A1 (en) * | 1988-12-23 | 1990-07-12 | Standard Telephones And Cables Pty. Limited | A telephone subset arrangement |
JPH02294143A (ja) * | 1989-05-09 | 1990-12-05 | Toshiba Corp | 回線インターフェース回路 |
IT1246719B (it) * | 1990-11-15 | 1994-11-26 | St Microelectronics Srl | Commutatore monoliticamente integrabile a ridotta dissipazione di potenza particolarmente per apparecchi telefonici e simili |
AU654375B2 (en) * | 1991-09-04 | 1994-11-03 | Alcatel Australia Limited | Line switch control circuit arrangement for telephone subset |
SG48286A1 (en) * | 1992-10-14 | 1998-04-17 | Koninkl Philips Electronics Nv | Electronic hook switch for a subscriber set. |
US5717752A (en) * | 1995-06-30 | 1998-02-10 | Siemens Components | Data access arrangement |
TW358964B (en) * | 1996-11-21 | 1999-05-21 | Applied Materials Inc | Method and apparatus for improving sidewall coverage during sputtering in a chamber having an inductively coupled plasma |
US6823066B1 (en) * | 1997-04-22 | 2004-11-23 | Silicon Laboratories Inc. | Digital access arrangement circuitry and method having current ramping control of the hookswitch |
CN1160933C (zh) * | 1997-06-16 | 2004-08-04 | 皇家菲利浦电子有限公司 | 交流/直流功率负载控制电路 |
CN1330830A (zh) * | 1998-12-16 | 2002-01-09 | 科胜讯***公司 | 不用连接开关的电话线接口电路 |
US6845157B1 (en) * | 2000-02-14 | 2005-01-18 | Paradyne Corporation | Linear polarity guard and method for DSL-ready pots devices |
US6968055B1 (en) | 2003-03-26 | 2005-11-22 | Silicon Laboratories Inc. | DC holding circuit |
US8548126B2 (en) * | 2005-06-13 | 2013-10-01 | Utc Fire & Security Americas Corporation, Inc. | Polarized telephone system for 3-state and 4-state systems |
US8400745B1 (en) * | 2008-04-30 | 2013-03-19 | Netapp, Inc. | Fuse apparatus |
Family Cites Families (34)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2876366A (en) * | 1953-12-28 | 1959-03-03 | Bell Telephone Labor Inc | Semiconductor switching devices |
US2774888A (en) * | 1955-08-23 | 1956-12-18 | Gen Dynamics Corp | Electronic switch |
GB839567A (en) * | 1956-10-24 | 1960-06-29 | Automatic Telephone & Elect | Improvements in or relating to telephone systems |
US2972683A (en) * | 1957-07-24 | 1961-02-21 | Bell Telephone Labor Inc | Electrical circuits for communication networks |
US3592974A (en) * | 1969-04-28 | 1971-07-13 | G V Controls Inc | Automatic dialing apparatus |
IT977993B (it) * | 1973-01-03 | 1974-09-20 | Sits Soc It Telecom Siemens | Tastiera di selezione elettroni ca per apparecchi telefonici con emissione di impulsi decadici intercambiabile con il disco com binatore |
CA1019485A (en) * | 1974-06-21 | 1977-10-18 | Sed Systems Ltd. | Automatic dialing equipment |
US4008380A (en) * | 1975-06-30 | 1977-02-15 | Rood Tool Co. | Telephone conversion unit with multiple memory system |
US4063045A (en) * | 1976-07-27 | 1977-12-13 | Extel Corporation | Telecommunication line switching circuit |
DE2654419C2 (de) * | 1976-12-01 | 1983-06-09 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Schaltungsanordnung zur Spannungsbegrenzung |
DE2657589C2 (de) * | 1976-12-18 | 1982-11-18 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Dämpfungsfreier elektronischer Schalter |
DE2742996A1 (de) * | 1977-09-22 | 1979-03-29 | Elmeg | Fernsprechapparat mit einem pufferregister zum zwischenspeichern einer rufnummer |
NL7809628A (nl) * | 1978-09-21 | 1980-03-25 | Nederlanden Staat | Schakeling voor multipel aangesloten telefoontoestel- len. |
NL7907275A (nl) * | 1979-10-01 | 1981-04-03 | Philips Nv | Spanningsstabilisator geschikt voor een telefoon- toestel. |
NL8001135A (nl) * | 1980-02-26 | 1981-09-16 | Philips Nv | Lijnonderbrekingsinrichting. |
NL8001136A (nl) * | 1980-02-26 | 1981-09-16 | Philips Nv | Schakeling voor toepassing in een telefoontoestel. |
US4329541A (en) * | 1980-05-14 | 1982-05-11 | Gerber Jr Robert F | Dialing system for teleprinter |
US4306119A (en) * | 1980-07-03 | 1981-12-15 | Bell Telephone Laboratories, Incorporated | Telephone outpulsing circuit |
CA1136783A (en) * | 1980-09-23 | 1982-11-30 | Guy J. Chaput | Telephone circuit |
DE3205214A1 (de) * | 1982-02-13 | 1983-08-25 | Dr. Kamphausen GmbH, 1000 Berlin | Schaltungsanordnung fuer teilnehmersprechstelle |
JPS58159052A (ja) * | 1982-03-16 | 1983-09-21 | Nippon Telegr & Teleph Corp <Ntt> | レパ−トリ・ダイヤル装置 |
US4413159A (en) * | 1982-04-02 | 1983-11-01 | Bell Telephone Laboratories, Incorporated | Dial pulsing circuit |
JPS58155159U (ja) * | 1982-04-09 | 1983-10-17 | 神田通信工業株式会社 | 電話機回路 |
JPS58191759U (ja) * | 1982-06-15 | 1983-12-20 | 日通工株式会社 | ダイヤルパルス発生回路 |
JPS5923663A (ja) * | 1982-07-29 | 1984-02-07 | Matsushita Electric Ind Co Ltd | 自動ダイヤル装置 |
JPS5944159A (ja) * | 1982-09-07 | 1984-03-12 | Nippon Telegr & Teleph Corp <Ntt> | 電話機のサ−ジ防護回路 |
FR2533097A1 (fr) * | 1982-09-13 | 1984-03-16 | Gesi | Controleur de ligne telephonique destine a cooperer avec un automate |
JPS5953747A (ja) * | 1982-09-14 | 1984-03-28 | 株式会社小糸製作所 | 糸検出装置 |
GB2132447B (en) * | 1982-12-04 | 1986-07-30 | Standard Telephones Cables Ltd | Switch device |
JPS59140759A (ja) * | 1983-01-31 | 1984-08-13 | Taiko Denki Seisakusho:Kk | 電話機のダイヤル回路 |
US4465903A (en) * | 1983-04-21 | 1984-08-14 | Ixo, Inc. | Electronic telephone interface circuit |
JPS6030140A (ja) * | 1983-07-28 | 1985-02-15 | Fujitsu Ltd | スピンドライヤ |
DE3330726C1 (de) * | 1983-08-26 | 1984-12-13 | Telefonbau Und Normalzeit Gmbh, 6000 Frankfurt | Schaltungsanordnung für Fernsprechapparate mit elektronisch gesteuerter Wahlimpulsgabe |
FR2555004A1 (fr) * | 1983-11-14 | 1985-05-17 | Radiotechnique Compelec | Dispositif pour effectuer une ouverture de boucle d'une duree calibree a partir d'un poste telephonique |
-
1986
- 1986-07-07 KR KR1019870700234A patent/KR940011757B1/ko not_active IP Right Cessation
- 1986-07-07 EP EP86904037A patent/EP0233892B1/en not_active Expired - Lifetime
- 1986-07-07 GB GB8705311A patent/GB2187363B/en not_active Expired
- 1986-07-07 JP JP61503791A patent/JPH0795773B2/ja not_active Expired - Lifetime
- 1986-07-07 BR BR8606792A patent/BR8606792A/pt not_active IP Right Cessation
- 1986-07-07 DE DE3689653T patent/DE3689653T2/de not_active Expired - Fee Related
- 1986-07-17 US US06/887,170 patent/US4815126A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP0233892A4 (en) | 1989-06-21 |
DE3689653D1 (de) | 1994-03-24 |
GB2187363A (en) | 1987-09-03 |
EP0233892B1 (en) | 1994-02-16 |
JPH0795773B2 (ja) | 1995-10-11 |
US4815126A (en) | 1989-03-21 |
EP0233892A1 (en) | 1987-09-02 |
KR940011757B1 (ko) | 1994-12-23 |
GB2187363B (en) | 1989-08-02 |
JPS63500694A (ja) | 1988-03-10 |
KR880700602A (ko) | 1988-03-15 |
DE3689653T2 (de) | 1994-07-21 |
GB8705311D0 (en) | 1987-04-08 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
KD | Notifcation of receipt (letter patent) | ||
FG | Letter patent granted | ||
B21A | Patent or certificate of addition expired [chapter 21.1 patent gazette] |
Free format text: PATENTE EXTINTA EM 07/07/2001 |