TW362310B - Arrangement in a subscriber line interface circuit - Google Patents

Arrangement in a subscriber line interface circuit

Info

Publication number
TW362310B
TW362310B TW086104515A TW86104515A TW362310B TW 362310 B TW362310 B TW 362310B TW 086104515 A TW086104515 A TW 086104515A TW 86104515 A TW86104515 A TW 86104515A TW 362310 B TW362310 B TW 362310B
Authority
TW
Taiwan
Prior art keywords
interface circuit
line interface
line
output terminal
hand
Prior art date
Application number
TW086104515A
Other languages
English (en)
Inventor
Hans Eriksson
Original Assignee
Infineon Technologies Ag
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 Infineon Technologies Ag filed Critical Infineon Technologies Ag
Application granted granted Critical
Publication of TW362310B publication Critical patent/TW362310B/zh

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/22—Arrangements for supervision, monitoring or testing
    • H04M3/26—Arrangements for supervision, monitoring or testing with means for applying test signals or for measuring
    • H04M3/28—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor
    • H04M3/30—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor for subscriber's lines, for the local loop
    • H04M3/305—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor for subscriber's lines, for the local loop testing of physical copper line parameters, e.g. capacitance or resistance
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/738—Interface circuits for coupling substations to external telephone lines
    • H04M1/76—Compensating for differences in line impedance
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/005—Interface circuits for subscriber lines

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Measurement Of Current Or Voltage (AREA)
  • Measurement Of Resistance Or Impedance (AREA)
TW086104515A 1996-11-08 1997-04-09 Arrangement in a subscriber line interface circuit TW362310B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9604099A SE507739C2 (sv) 1996-11-08 1996-11-08 Anordning vid en linjekrets för mätning av linjespänning

Publications (1)

Publication Number Publication Date
TW362310B true TW362310B (en) 1999-06-21

Family

ID=20404544

Family Applications (1)

Application Number Title Priority Date Filing Date
TW086104515A TW362310B (en) 1996-11-08 1997-04-09 Arrangement in a subscriber line interface circuit

Country Status (11)

Country Link
US (1) US6263076B1 (zh)
EP (1) EP0928533B1 (zh)
JP (1) JP2001504301A (zh)
KR (1) KR100356650B1 (zh)
CN (1) CN1160926C (zh)
AU (1) AU4974597A (zh)
CA (1) CA2271108A1 (zh)
DE (1) DE69730610T2 (zh)
SE (1) SE507739C2 (zh)
TW (1) TW362310B (zh)
WO (1) WO1998021868A2 (zh)

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4004102A (en) 1975-08-08 1977-01-18 Bell Telephone Laboratories, Incorporated Automatic impedance modification of transmission lines
US4015091A (en) * 1975-12-05 1977-03-29 Bell Telephone Laboratories, Incorporated Telephone ringing generators
US4056693A (en) * 1975-12-05 1977-11-01 Bell Telephone Laboratories, Incorporated Voltage and current controlled converter for telephone ringing
US4025729A (en) * 1975-12-05 1977-05-24 Bell Telephone Laboratories, Incorporated Telephone ringing control circuits
US4048551A (en) * 1975-12-05 1977-09-13 Bell Telephone Laboratories, Incorporated Battery charging circuit
US4947427A (en) * 1987-05-15 1990-08-07 Northern Telecom Limited Protection arrangement for a telephone subscriber line interface circuit
US4894860A (en) * 1988-06-07 1990-01-16 Tie/Communications, Inc. Trunk interface circuitry for telephone systems
JPH02161858A (ja) 1988-12-14 1990-06-21 Ricoh Co Ltd 回線電流値計測回路および測音防止回路
ATE103450T1 (de) 1990-01-29 1994-04-15 Siemens Ag Verfahren und anordnung zur bildung des leitungsabschlusses einer telefonleitung.
SE465799B (sv) * 1990-03-15 1991-10-28 Ericsson Telefon Ab L M Anordning foer reducerad effektmatning till en abonnentlinje
US5661794A (en) * 1992-04-16 1997-08-26 Northern Telecom Limited Telephone line interface circuit with voltage control
US5193108A (en) * 1991-10-04 1993-03-09 Leviton Manufacturing Co., Inc. Portable telecommunications test instrument with inductive probe circuit
JPH05176354A (ja) * 1991-12-20 1993-07-13 Fujitsu Ltd 加入者インタフェース回路
GB9213992D0 (en) * 1992-07-01 1992-08-12 Raychem Ltd Remotely actuated switch and protection circuit
GB9218134D0 (en) * 1992-08-26 1992-10-14 Raychem Sa Nv Communication channel switching arrangement
US5388153A (en) * 1993-03-26 1995-02-07 At&T Corp. Apparatus and method for detecting telephone line status
US5440610A (en) * 1993-04-14 1995-08-08 Harris Corporation Mechanism for controlling operation of telephone metallic loop measurement device in dependence upon rate of settling of telephone line voltage
ATE166197T1 (de) * 1993-07-29 1998-05-15 St Microelectronics Srl Integrierte teilnehmerleitungsschnittstellenschaltung mit langsamem polaritätsumschalter
US5422939A (en) * 1993-08-05 1995-06-06 Schlumberger Industries, Inc. Parallel off-hook detection for both line-available and phone pick-up detection
GB2289188B (en) * 1994-04-26 1998-09-09 Motorola Inc Telephone line interface cicuit
US5553138A (en) * 1994-05-13 1996-09-03 Compaq Computer Corporation Telephone line sourced power supply
US5771285A (en) * 1996-02-07 1998-06-23 Lucent Technologies Circuit and method for detecting telephone line status and telephone instrument embodying the same

Also Published As

Publication number Publication date
EP0928533B1 (en) 2004-09-08
KR20000053147A (ko) 2000-08-25
US6263076B1 (en) 2001-07-17
CN1235726A (zh) 1999-11-17
SE9604099L (sv) 1998-05-09
SE507739C2 (sv) 1998-07-06
CN1160926C (zh) 2004-08-04
AU4974597A (en) 1998-06-03
EP0928533A2 (en) 1999-07-14
WO1998021868A3 (en) 1998-07-16
SE9604099D0 (sv) 1996-11-08
WO1998021868A2 (en) 1998-05-22
JP2001504301A (ja) 2001-03-27
CA2271108A1 (en) 1998-05-22
DE69730610T2 (de) 2005-09-15
KR100356650B1 (ko) 2002-10-18
DE69730610D1 (de) 2004-10-14

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