BR7406897D0 - Esquema de transmissao telefonica - Google Patents
Esquema de transmissao telefonicaInfo
- Publication number
- BR7406897D0 BR7406897D0 BR6897/74A BR689774A BR7406897D0 BR 7406897 D0 BR7406897 D0 BR 7406897D0 BR 6897/74 A BR6897/74 A BR 6897/74A BR 689774 A BR689774 A BR 689774A BR 7406897 D0 BR7406897 D0 BR 7406897D0
- Authority
- BR
- Brazil
- Prior art keywords
- transmission scheme
- telephone transmission
- telephone
- scheme
- transmission
- Prior art date
Links
Classifications
-
- 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)
- Monitoring And Testing Of Exchanges (AREA)
- Devices For Supply Of Signal Current (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US05/398,448 US3968333A (en) | 1973-09-18 | 1973-09-18 | Battery charger control circuit for telephone transmission systems |
Publications (1)
Publication Number | Publication Date |
---|---|
BR7406897D0 true BR7406897D0 (pt) | 1975-09-09 |
Family
ID=23575412
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BR6897/74A BR7406897D0 (pt) | 1973-09-18 | 1974-08-21 | Esquema de transmissao telefonica |
Country Status (4)
Country | Link |
---|---|
US (1) | US3968333A (pt) |
BR (1) | BR7406897D0 (pt) |
FR (1) | FR2244317B3 (pt) |
GB (1) | GB1475800A (pt) |
Families Citing this family (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4145572A (en) * | 1977-08-26 | 1979-03-20 | Gte Automatic Electric Laboratories, Inc. | Power supply control circuit for subscriber carrier telephone system |
US4380687A (en) * | 1981-03-27 | 1983-04-19 | Gte Automatic Electric Laboratories, Inc. | Power supply control circuit for subscriber carrier telephone system |
US4374303A (en) * | 1981-03-27 | 1983-02-15 | Gte Automatic Electric Laboratories, Inc. | Power supply control circuit for subscriber carrier telephone system |
US4488006A (en) * | 1982-07-01 | 1984-12-11 | At&T Bell Laboratories | Apparatus for controlling the application of telephone line power in a telephone set |
US4654869A (en) * | 1985-09-11 | 1987-03-31 | Itt Corporation | Information collecting and forwarding apparatus |
WO1987007105A1 (en) * | 1986-05-12 | 1987-11-19 | Aquatrol Corporation | Remote sensor with inductively coupled power supply |
US4893332A (en) * | 1986-05-12 | 1990-01-09 | Aquatrol Corporation | Low-powered remote sensor |
CA1285494C (en) * | 1987-07-10 | 1991-07-02 | Newbridge Networks Corporation | Paging system |
US6357011B2 (en) | 1998-07-15 | 2002-03-12 | Gateway, Inc. | Bus-powered computer peripheral with supplement battery power to overcome bus-power limit |
US6480510B1 (en) | 1998-07-28 | 2002-11-12 | Serconet Ltd. | Local area network of serial intelligent cells |
US6956826B1 (en) | 1999-07-07 | 2005-10-18 | Serconet Ltd. | Local area network for distributing data communication, sensing and control signals |
US6690677B1 (en) * | 1999-07-20 | 2004-02-10 | Serconet Ltd. | Network for telephony and data communication |
US6549616B1 (en) | 2000-03-20 | 2003-04-15 | Serconet Ltd. | Telephone outlet for implementing a local area network over telephone lines and a local area network using such outlets |
US6580254B2 (en) * | 2001-03-09 | 2003-06-17 | Adtran, Inc. | Apparatus and method for providing span power to communication equipment at a customer premise |
US7006623B1 (en) * | 2001-11-02 | 2006-02-28 | Conexant Systems, Inc. | Circuit for reducing voltage peak in interfacing with a telephone line |
US7567665B2 (en) * | 2002-04-29 | 2009-07-28 | Adc Dsl Systems, Inc. | Function for controlling line powered network element |
IL154234A (en) | 2003-01-30 | 2010-12-30 | Mosaid Technologies Inc | Method and system for providing dc power on local telephone lines |
US6998964B2 (en) * | 2003-05-30 | 2006-02-14 | Adc Dsl Systems, Inc. | Splitter |
US20040239512A1 (en) * | 2003-05-30 | 2004-12-02 | Adc Dsl Systems, Inc. | Lightning protection for a network element |
IL159838A0 (en) | 2004-01-13 | 2004-06-20 | Yehuda Binder | Information device |
US7620171B2 (en) | 2004-10-29 | 2009-11-17 | Hubbell Incorporated | Method and apparatus for powering a DS3 device |
US8913634B2 (en) * | 2005-04-01 | 2014-12-16 | Freescale Semiconductor, Inc. | Method and apparatus facilitating multi mode interfaces |
US7433165B2 (en) * | 2006-03-17 | 2008-10-07 | Adc Dsl Systems, Inc. | Auto-resetting span-power protection |
EP2040427A1 (en) * | 2007-09-22 | 2009-03-25 | New Day Investment Limited | High speed electrical data transmission system |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3780228A (en) * | 1972-03-01 | 1973-12-18 | Gte Automatic Electric Lab Inc | Automatic disconnect circuit for reducing dial pulse distortion caused by subscriber carrier equipment |
US3840703A (en) * | 1972-03-01 | 1974-10-08 | Gte Automatic Electric Lab Inc | Automatic disconnect circuit for reducing dial pulse distortion and noise in a subscriber carrier telephone system |
-
1973
- 1973-09-18 US US05/398,448 patent/US3968333A/en not_active Expired - Lifetime
-
1974
- 1974-07-31 GB GB3380574A patent/GB1475800A/en not_active Expired
- 1974-08-21 BR BR6897/74A patent/BR7406897D0/pt unknown
- 1974-09-17 FR FR7431410A patent/FR2244317B3/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US3968333A (en) | 1976-07-06 |
GB1475800A (en) | 1977-06-10 |
FR2244317A1 (pt) | 1975-04-11 |
FR2244317B3 (pt) | 1977-07-01 |
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