TW265500B - - Google Patents

Info

Publication number
TW265500B
TW265500B TW084100494A TW84100494A TW265500B TW 265500 B TW265500 B TW 265500B TW 084100494 A TW084100494 A TW 084100494A TW 84100494 A TW84100494 A TW 84100494A TW 265500 B TW265500 B TW 265500B
Authority
TW
Taiwan
Prior art keywords
signal
time
measured
subscriber line
hook
Prior art date
Application number
TW084100494A
Other languages
English (en)
Original Assignee
Ericsson Telefon Ab L M
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 Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Application granted granted Critical
Publication of TW265500B publication Critical patent/TW265500B/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
    • H04M3/2272—Subscriber line supervision circuits, e.g. call detection circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • 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
    • H04M19/026—Arrangements for interrupting the ringing current

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Facsimile Transmission Control (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
  • Telephone Function (AREA)
TW084100494A 1994-01-21 1995-01-20 TW265500B (zh)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9400186A SE9400186D0 (sv) 1994-01-21 1994-01-21 Förfarande i ett telekommunikationssystem

Publications (1)

Publication Number Publication Date
TW265500B true TW265500B (zh) 1995-12-11

Family

ID=20392647

Family Applications (1)

Application Number Title Priority Date Filing Date
TW084100494A TW265500B (zh) 1994-01-21 1995-01-20

Country Status (19)

Country Link
US (1) US5734712A (zh)
EP (1) EP0740880B1 (zh)
JP (1) JP3456484B2 (zh)
KR (1) KR100356003B1 (zh)
CN (1) CN1080509C (zh)
AT (1) ATE186434T1 (zh)
BR (1) BR9506627A (zh)
CA (1) CA2179995A1 (zh)
DE (1) DE69513147T2 (zh)
DK (1) DK0740880T3 (zh)
ES (1) ES2141333T3 (zh)
FI (1) FI962919A0 (zh)
GR (1) GR3032001T3 (zh)
MX (1) MX9602474A (zh)
NO (1) NO314869B1 (zh)
PT (1) PT740880E (zh)
SE (1) SE9400186D0 (zh)
TW (1) TW265500B (zh)
WO (1) WO1995020289A1 (zh)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5694465A (en) * 1995-03-16 1997-12-02 Advanced Micro Devices, Inc. Integrated ringer for short telephone lines
US6167135A (en) * 1995-12-01 2000-12-26 Telefonaktiebolaget Lm Ericsson Method and apparatus for generating a ringing signal
KR0173403B1 (ko) * 1996-04-25 1999-04-01 김광호 전화단말기의 통화로 자동복구 장치 및 그 방법
US6219417B1 (en) * 1997-06-06 2001-04-17 Advanced Micro Devices, Inc. Ring trip detection in a communication system
US6178241B1 (en) * 1997-06-06 2001-01-23 Legerity, Inc. Switch hook status determination in a communication system
EP0899926A1 (en) * 1997-08-25 1999-03-03 Alcatel Telecommunication device with caller identification
US5901219A (en) * 1997-08-27 1999-05-04 3Com Corporation Method for ring signal detection
US6570984B1 (en) 1999-04-20 2003-05-27 Eci Telecom Ltd. Ring trip detection circuit and method for subscriber line interface
US6257063B1 (en) * 2000-05-24 2001-07-10 Daimlerchrysler Corporation Method for measuring vibration damping
SE0002350L (sv) * 2000-06-21 2001-12-22 Ericsson Telefon Ab L M En metod att generera en ringsignal i en abonnentlinjekrets
US7215764B2 (en) * 2001-02-06 2007-05-08 Legerity, Inc. Current sensing echo cancellation device
US20040120507A1 (en) * 2002-12-18 2004-06-24 Nasser Pooladian Ring signal voltage offset for subscriber line interface circuit
CN111405131B (zh) * 2020-03-30 2021-04-20 深圳震有科技股份有限公司 一种远端摘机信号的检测方法、系统及存储介质

Family Cites Families (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3591728A (en) * 1966-02-11 1971-07-06 Western Electronics Dev Corp Local ringing and ring-trip relay for carrier terminal
DE2014950B2 (de) * 1970-03-28 1976-01-02 Standard Elektrik Lorenz Ag, 7000 Stuttgart Verfahren und Schaltungsanordnung zur Rufabschaltung in Fernmelde-, insbesondere Fernsprechanlagen
US4132864A (en) * 1977-04-28 1979-01-02 International Business Machines Corporation Digital measurement of the DC value in an AC signal adapted to telephone off-hook detection
US4234762A (en) * 1978-12-29 1980-11-18 Bell Telephone Laboratories, Incorporated Ring trip detector circuit
US4406929A (en) * 1981-02-26 1983-09-27 Motorola Inc. Hook status detector for a subscriber loop interface circuit
US4396805A (en) * 1981-09-21 1983-08-02 Siemens Corporation Ring trip detector for a subscriber line interface circuit
JPS5897949A (ja) * 1981-12-08 1983-06-10 Fujitsu Ltd リングトリップ回路
JPS5897950A (ja) * 1981-12-08 1983-06-10 Fujitsu Ltd リングトリツプ方式
IT1155661B (it) * 1982-03-24 1987-01-28 Cselt Centro Studi Lab Telecom Circuito elettronico per la rivelazione dello sgancio del microtelefono in presenza della corrente di chiamata
US4455456A (en) * 1982-04-26 1984-06-19 International Telephone And Telegraph Corporation Digital supervisory circuit for a telephone system
SE431704B (sv) * 1982-07-06 1984-02-20 Ericsson Telefon Ab L M Forfarande vid strommatning av en abonnentapparat fran en telefonvexel
US4524246A (en) * 1982-07-07 1985-06-18 Harris Corporation SLIC II--common-mode current rejection
FR2531296B1 (fr) * 1982-07-30 1988-04-15 Cit Alcatel Procede et dispositif de detection de boucle en phase sonnerie
SE433284B (sv) * 1982-09-17 1984-05-14 Ericsson Telefon Ab L M Anordning for strommatning av en abonnentapparat
SE433285B (sv) * 1982-09-22 1984-05-14 Ericsson Telefon Ab L M Anordning for strommatning av en abonnentapparat
EP0165363B1 (fr) * 1984-06-20 1988-08-31 International Business Machines Corporation Circuit detecteur de variations de courant
US4731828A (en) * 1985-06-07 1988-03-15 Plessey Overseas Limited Ring trip detection in telecommunications exchanges
SE448264B (sv) * 1985-12-19 1987-02-02 Ericsson Telefon Ab L M Anordninng for justering av impedansverdet hos ett impedansnet i en integrerad halvledarkrets
EP0231466B1 (de) * 1985-12-20 1990-10-24 Siemens Aktiengesellschaft Schaltungsanordnung zur Schleifenschlussindikation während der Rufphase
SE453240B (sv) * 1986-05-06 1988-01-18 Ericsson Telefon Ab L M Anordning i ett telekommunikationssystem for att strommata en telefonapparat
SE453626B (sv) * 1986-06-27 1988-02-15 Ericsson Telefon Ab L M Sett och anordning att strommata en telefonlinje for att vid begrensad batterispenning kunna overfora en odistorderad talsignal
IT1213306B (it) * 1986-07-29 1989-12-20 Sgs Microelettronica Spa Circuito telefonico, integrabile monoliticamente, per l'invio disegnali di suoneria in una linea telefonica d'utente e per il riconoscimento dello sgangio in fase di suoneria.
US4742536A (en) * 1986-10-24 1988-05-03 Energy Innovations, Inc. Telephone monitor circuit and method
IT1197977B (it) * 1986-11-13 1988-12-21 Sgs Microelettronica Spa Circuito telefonico, integrabile monoliticamente, per l'invio di segnali di suoneria in una linea telefonica d'utente ed il riconoscimento dello sgancio in fase di suoneria
SE465547B (sv) * 1990-02-01 1991-09-23 Ericsson Telefon Ab L M Saett och krets foer likstroemsmatning till en telefonlinje
SE467333B (sv) * 1990-10-24 1992-06-29 Ericsson Telefon Ab L M Krets foer att alstra debiteringspulser avsedda foer presentation hos en teleabonnent
JPH06121038A (ja) * 1991-07-08 1994-04-28 Fujitsu Ltd リングトリップ判定方法
US5402482A (en) * 1991-07-08 1995-03-28 Fujitsu Limited Ring trip deciding circuit
US5425089A (en) * 1992-01-27 1995-06-13 Chan; John Y. Low cost telephone caller identification device and method
JPH077984B2 (ja) * 1992-10-26 1995-01-30 日通工株式会社 加入者線回路の呼出信号制御方式
US5406623A (en) * 1993-04-23 1995-04-11 At&T Corp. Method and apparatus for ringing telephone stations

Also Published As

Publication number Publication date
NO963022D0 (no) 1996-07-19
ES2141333T3 (es) 2000-03-16
EP0740880A1 (en) 1996-11-06
DE69513147D1 (de) 1999-12-09
KR970700973A (ko) 1997-02-12
NO963022L (no) 1996-09-13
US5734712A (en) 1998-03-31
DE69513147T2 (de) 2000-03-02
KR100356003B1 (ko) 2003-01-24
FI962919A (fi) 1996-07-19
BR9506627A (pt) 1997-09-16
SE9400186D0 (sv) 1994-01-21
JP3456484B2 (ja) 2003-10-14
FI962919A0 (fi) 1996-07-19
JPH09507622A (ja) 1997-07-29
CN1080509C (zh) 2002-03-06
PT740880E (pt) 2000-04-28
WO1995020289A1 (en) 1995-07-27
CN1139505A (zh) 1997-01-01
NO314869B1 (no) 2003-06-02
MX9602474A (es) 1997-04-30
GR3032001T3 (en) 2000-03-31
ATE186434T1 (de) 1999-11-15
CA2179995A1 (en) 1995-07-27
DK0740880T3 (da) 2000-04-17
EP0740880B1 (en) 1999-11-03

Similar Documents

Publication Publication Date Title
TW265500B (zh)
DE3469122D1 (en) Method and apparatus for the detection of a transition of the direct current component of a periodic signal, in particular for subscriber loop interface circuits
EP0543161A3 (en) Method and circuit device for measuring operation paramaters of an interface circuit and a telephone subscriber line connected thereto
MY116134A (en) Power supply unit
DE3367993D1 (en) Method of and electronic device for detecting the lifting of the telephone handset in presence of ringing current
EP0116291A3 (en) Ring trip detection system
CA2279684A1 (en) Method and apparatus for telephone call fraud detection and prevention
EP0600644A1 (en) Ring-trip detection using ring voltage and current
JPS6429052A (en) Line switcher
JPS57145466A (en) Switchboard
KR930000699B1 (ko) 신호음 단속 주기 검출회로
JPS642451A (en) Incoming tone generating circuit
KR900005714Y1 (ko) 잘못놓여진 수화기의 자동검색 및 경보회로
JPS648755A (en) Conference communication equipment
TW358286B (en) Ring-trip circuit
KR950010386Y1 (ko) 전화 선로상의 신호음 검출회로
TW239246B (en) Faxing machine
JPS6430395A (en) Key telephone system
JPS648767A (en) Facsimile equipment
JPS5720064A (en) Facsimile equipment equipped with answer-signal visual display device
JPS5627542A (en) Incoming display system
JPS5754465A (ja) Shingoonkenshutsuhoshiki
JPS57180261A (en) Digital tone receiver
IT1261137B (it) Dispositivo per la protezione di una linea telefonica.
JPS5630390A (en) Subscriber's grounding detecting circuit