CA2424235A1 - Filtre et procede correspondant - Google Patents

Filtre et procede correspondant Download PDF

Info

Publication number
CA2424235A1
CA2424235A1 CA002424235A CA2424235A CA2424235A1 CA 2424235 A1 CA2424235 A1 CA 2424235A1 CA 002424235 A CA002424235 A CA 002424235A CA 2424235 A CA2424235 A CA 2424235A CA 2424235 A1 CA2424235 A1 CA 2424235A1
Authority
CA
Canada
Prior art keywords
filter
coupled
loop
impedance
switching element
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.)
Abandoned
Application number
CA002424235A
Other languages
English (en)
Inventor
Roger J. Williamson
Leslie Humphrey
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
Individual
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 Individual filed Critical Individual
Publication of CA2424235A1 publication Critical patent/CA2424235A1/fr
Abandoned legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/10—Compensating for variations in line balance
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/57—Arrangements for indicating or recording the number of the calling subscriber at the called subscriber's set
    • H04M1/573—Line monitoring circuits for detecting caller identification
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/71—Substation extension arrangements
    • H04M1/715—Substation extension arrangements using two or more extensions per line
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/06—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors
    • H04M11/062—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors using different frequency bands for speech and other data

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Power Engineering (AREA)
  • Telephonic Communication Services (AREA)
  • Filters And Equalizers (AREA)

Abstract

L'invention concerne un système et un mécanisme sensiblement conçus pour ralentir un transitoire produit pendant une activité d'ouverture de boucle d'un poste téléphonique dans un système téléphonique. Ce système téléphonique comprend une pluralité de postes téléphoniques (110, 126), couplés en parallèle à une ligne d'abonné (100), et un modem de données (138) couplé à la ligne d'abonné (100), fournissant des accès aux données à une fréquence supérieure à celle utilisée pour un accès vocal. Le circuit filtrant (116) comprend une inductance (402) et une impédance (404) reliées en série à une ligne ainsi qu'un élément en dérivation (409) relié en parallèle à cette ligne. Ce circuit filtrant (116) permet d'utiliser une fonction d'identification de ligne appelante (CLI) dans le système téléphonique d'un abonné.
CA002424235A 2000-10-02 2001-10-01 Filtre et procede correspondant Abandoned CA2424235A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US67721400A 2000-10-02 2000-10-02
US09/677,214 2000-10-02
PCT/GB2001/004369 WO2002030001A2 (fr) 2000-10-02 2001-10-01 Filtre et procede correspondant

Publications (1)

Publication Number Publication Date
CA2424235A1 true CA2424235A1 (fr) 2002-04-11

Family

ID=24717791

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002424235A Abandoned CA2424235A1 (fr) 2000-10-02 2001-10-01 Filtre et procede correspondant

Country Status (4)

Country Link
EP (1) EP1325619A2 (fr)
AU (1) AU2001292043A1 (fr)
CA (1) CA2424235A1 (fr)
WO (1) WO2002030001A2 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103856625B (zh) * 2012-12-07 2015-12-09 广州三星通信技术研究有限公司 控制双路输出音频的装置以及无线通信终端

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9726037D0 (en) * 1997-12-09 1998-02-04 Northern Telecom Ltd Communications signal splitter
US6483914B1 (en) * 1999-05-06 2002-11-19 Nortel Networks Limited Telephone filter arrangement

Also Published As

Publication number Publication date
WO2002030001A2 (fr) 2002-04-11
WO2002030001A3 (fr) 2003-01-23
AU2001292043A1 (en) 2002-04-15
EP1325619A2 (fr) 2003-07-09

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Legal Events

Date Code Title Description
FZDE Discontinued