CA941533A - Supplying a charging current by way of telephone lines or the like - Google Patents

Supplying a charging current by way of telephone lines or the like

Info

Publication number
CA941533A
CA941533A CA134,884A CA134884A CA941533A CA 941533 A CA941533 A CA 941533A CA 134884 A CA134884 A CA 134884A CA 941533 A CA941533 A CA 941533A
Authority
CA
Canada
Prior art keywords
supplying
way
charging current
telephone lines
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
Application number
CA134,884A
Other languages
English (en)
Other versions
CA134884S (en
Inventor
Oliver C. Matthews
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Post Office
Original Assignee
Post Office
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Post Office filed Critical Post Office
Application granted granted Critical
Publication of CA941533A publication Critical patent/CA941533A/en
Expired legal-status Critical Current

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)
  • Devices For Supply Of Signal Current (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
CA134,884A 1971-02-16 1972-02-14 Supplying a charging current by way of telephone lines or the like Expired CA941533A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB469971A GB1387565A (en) 1971-02-16 1971-02-16 Supplying a charging current by way of telephone lines
GB3913571 1971-08-20

Publications (1)

Publication Number Publication Date
CA941533A true CA941533A (en) 1974-02-05

Family

ID=26239320

Family Applications (1)

Application Number Title Priority Date Filing Date
CA134,884A Expired CA941533A (en) 1971-02-16 1972-02-14 Supplying a charging current by way of telephone lines or the like

Country Status (9)

Country Link
US (1) US3870822A (it)
AU (1) AU466712B2 (it)
BE (1) BE779451A (it)
CA (1) CA941533A (it)
FR (1) FR2125967A5 (it)
GB (1) GB1387565A (it)
HK (1) HK24277A (it)
IT (1) IT949107B (it)
NL (1) NL170582C (it)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1520381A (en) * 1976-01-09 1978-08-09 Post Office Data transmission systems
FR2484749B1 (fr) * 1980-06-16 1987-10-30 Cit Alcatel Dispositif d'alimentation en energie electrique d'un equipement pouvant prendre deux etats correspondant a des consommations differentes
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
US4691344A (en) * 1986-01-21 1987-09-01 Aquatrol Corporation Low-powered remote sensor and telephone line transmitter
US4893332A (en) * 1986-05-12 1990-01-09 Aquatrol Corporation Low-powered remote sensor
US5446784A (en) * 1993-02-25 1995-08-29 Mactaggart; Donald Apparatus for coupling a telephone line to a telephone line subscriber device
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
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
CN101035178B (zh) * 2006-03-10 2010-06-09 华为技术有限公司 远程供电系统、远端电源在位检测方法以及远程供电方法
US7433165B2 (en) * 2006-03-17 2008-10-07 Adc Dsl Systems, Inc. Auto-resetting span-power protection

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3601538A (en) * 1969-02-24 1971-08-24 Stromberg Carlson Corp Carrier and voice-frequency telephone system

Also Published As

Publication number Publication date
AU466712B2 (en) 1975-11-06
DE2207255B2 (de) 1975-08-21
NL170582C (nl) 1982-11-16
NL7201923A (it) 1972-08-18
HK24277A (en) 1977-05-27
GB1387565A (en) 1975-03-19
DE2207255A1 (de) 1972-09-07
US3870822A (en) 1975-03-11
AU3897472A (en) 1973-08-16
FR2125967A5 (it) 1972-09-29
NL170582B (nl) 1982-06-16
IT949107B (it) 1973-06-11
BE779451A (fr) 1972-06-16

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