DE69229268D1 - Schnittstellenschaltung mit spannungsumschaltung für eine fernsprechleitung - Google Patents

Schnittstellenschaltung mit spannungsumschaltung für eine fernsprechleitung

Info

Publication number
DE69229268D1
DE69229268D1 DE69229268T DE69229268T DE69229268D1 DE 69229268 D1 DE69229268 D1 DE 69229268D1 DE 69229268 T DE69229268 T DE 69229268T DE 69229268 T DE69229268 T DE 69229268T DE 69229268 D1 DE69229268 D1 DE 69229268D1
Authority
DE
Germany
Prior art keywords
switching
telephone line
interface
voltage
voltage switching
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 - Lifetime
Application number
DE69229268T
Other languages
English (en)
Other versions
DE69229268T2 (de
Inventor
Stanley Rosenbaum
Brian Sutherland
Reinhard W Rosch
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.)
Nortel Networks Ltd
Original Assignee
Northern Telecom Ltd
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 Northern Telecom Ltd filed Critical Northern Telecom Ltd
Publication of DE69229268D1 publication Critical patent/DE69229268D1/de
Application granted granted Critical
Publication of DE69229268T2 publication Critical patent/DE69229268T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/001—Current supply source at the exchanger providing current to substations
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)
DE69229268T 1992-04-03 1992-04-03 Schnittstellenschaltung mit spannungsumschaltung für eine fernsprechleitung Expired - Lifetime DE69229268T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CA1992/000135 WO1993020645A1 (en) 1992-04-03 1992-04-03 Telephone line interface circuit with voltage switching

Publications (2)

Publication Number Publication Date
DE69229268D1 true DE69229268D1 (de) 1999-07-01
DE69229268T2 DE69229268T2 (de) 1999-09-23

Family

ID=4172924

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69229268T Expired - Lifetime DE69229268T2 (de) 1992-04-03 1992-04-03 Schnittstellenschaltung mit spannungsumschaltung für eine fernsprechleitung

Country Status (5)

Country Link
EP (1) EP0587575B1 (de)
JP (1) JPH0821997B2 (de)
CA (1) CA2105376C (de)
DE (1) DE69229268T2 (de)
WO (1) WO1993020645A1 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE242571T1 (de) * 1995-02-01 2003-06-15 Advanced Micro Devices Inc Rufsignalerzeugung in einer teilnehmerschaltung (slic)
US5881129A (en) * 1996-05-10 1999-03-09 Chen; Robert Kuo-Wei Self-monitoring line interface circuit
US7567665B2 (en) 2002-04-29 2009-07-28 Adc Dsl Systems, Inc. Function for controlling line powered network element
US7340051B2 (en) * 2003-05-30 2008-03-04 Adc Dsl Systems, Inc. Power ramp-up in a line-powered network element system
US7433165B2 (en) 2006-03-17 2008-10-07 Adc Dsl Systems, Inc. Auto-resetting span-power protection

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH586983A5 (de) * 1974-12-23 1977-04-15 Ibm
CH604454A5 (en) * 1976-12-10 1978-09-15 Siemens Ag Albis Telephone call signal circuit
CA1157175A (en) * 1981-02-20 1983-11-15 Mitel Corporation Power saving line circuit
AU589718B2 (en) * 1985-12-20 1989-10-19 Alcatel N.V. Line circuit
WO1990008441A1 (fr) * 1989-01-19 1990-07-26 Fujitsu Limited Circuit detecteur de terre

Also Published As

Publication number Publication date
CA2105376C (en) 1997-02-18
CA2105376A1 (en) 1993-10-04
JPH0821997B2 (ja) 1996-03-04
EP0587575B1 (de) 1999-05-26
JPH06502753A (ja) 1994-03-24
EP0587575A1 (de) 1994-03-23
WO1993020645A1 (en) 1993-10-14
DE69229268T2 (de) 1999-09-23

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition