SE457591B - Foerfarande och apparat foer att testa kommunikationssystem - Google Patents

Foerfarande och apparat foer att testa kommunikationssystem

Info

Publication number
SE457591B
SE457591B SE8601959A SE8601959A SE457591B SE 457591 B SE457591 B SE 457591B SE 8601959 A SE8601959 A SE 8601959A SE 8601959 A SE8601959 A SE 8601959A SE 457591 B SE457591 B SE 457591B
Authority
SE
Sweden
Prior art keywords
signal
line
circuit
conductor
communication line
Prior art date
Application number
SE8601959A
Other languages
English (en)
Swedish (sv)
Other versions
SE8601959L (sv
SE8601959D0 (sv
Inventor
M D Walker
M R Grundtisch
Original Assignee
Tii Computer Systems Inc
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 Tii Computer Systems Inc filed Critical Tii Computer Systems Inc
Publication of SE8601959L publication Critical patent/SE8601959L/
Publication of SE8601959D0 publication Critical patent/SE8601959D0/xx
Publication of SE457591B publication Critical patent/SE457591B/sv

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/46—Monitoring; Testing
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)
SE8601959A 1984-08-29 1986-04-28 Foerfarande och apparat foer att testa kommunikationssystem SE457591B (sv)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/645,479 US4611101A (en) 1984-08-29 1984-08-29 Method and apparatus for testing communication systems

Publications (3)

Publication Number Publication Date
SE8601959L SE8601959L (sv) 1986-04-28
SE8601959D0 SE8601959D0 (sv) 1986-04-28
SE457591B true SE457591B (sv) 1989-01-09

Family

ID=24589200

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8601959A SE457591B (sv) 1984-08-29 1986-04-28 Foerfarande och apparat foer att testa kommunikationssystem

Country Status (7)

Country Link
US (1) US4611101A (fr)
EP (1) EP0191077A1 (fr)
AU (1) AU4774085A (fr)
CA (1) CA1245739A (fr)
GB (3) GB2183126B (fr)
SE (1) SE457591B (fr)
WO (1) WO1986001663A1 (fr)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4760592A (en) * 1985-02-07 1988-07-26 Secom General Corporation Wire tap detection device with passive testing
US4887289A (en) * 1988-08-29 1989-12-12 New York Telephone Company Remote testing of a trunk leading to an automatic call distributor
US5054050A (en) * 1990-04-30 1991-10-01 American Telephone & Telegraph Co. Drop testing in fiber to the home systems
JP3118730B2 (ja) * 1991-05-20 2000-12-18 富士通株式会社 加入者試験制御方式
CA2119441C (fr) * 1991-12-13 2002-06-04 Gilles Tremblay Appareil et methode de verification des liens de communication
EP0563674A3 (en) * 1992-03-31 1993-11-18 Siemens Ag Test apparatus for testing line signals on an analogic subscriber connection line
US5473666A (en) * 1992-09-11 1995-12-05 Reliance Comm/Tec Corporation Method and apparatus for digitally controlling gain in a talking path
KR940007852A (ko) * 1992-09-16 1994-04-28 윤종용 씨디-롬 시스템의 디지탈 노이즈 음 제거회로
US5521959A (en) * 1994-02-09 1996-05-28 Harris Corporation Programmable source for supplying controllably variable AC/DC voltage output for telephone line measurement apparatus
US5644617A (en) * 1995-01-12 1997-07-01 Teradyne, Inc. Method and apparatus for testing cables
US5864602A (en) * 1997-04-28 1999-01-26 Nynex Science & Technologies, Inc. Qualifying telephone line for digital transmission service
WO1999003221A2 (fr) * 1997-07-07 1999-01-21 Advanced Micro Devices, Inc. Dispositif et procede de determination des caracteristiques d'une ligne d'abonne numerique
KR100480565B1 (ko) * 1997-08-29 2005-05-16 삼성전자주식회사 다중모드기저대역아날로그신호처리시스템의아날로그/디지탈변환장치및그의변환방법
JP2002500470A (ja) * 1997-12-24 2002-01-08 エイディシィ・テレコミュニケーションズ・インコーポレイテッド デジタル通信ネットワーク用のテストアクセスシステム及び方法
ES2138556B1 (es) * 1998-03-04 2000-08-16 E Y P Telecomunicacion S A Sistema automatico de control y medida de lineas de comunicaciones de voz.
WO1999053627A1 (fr) 1998-04-10 1999-10-21 Chrimar Systems, Inc. Doing Business As Cms Technologies Systeme de communication avec un equipement electronique sur un reseau
DE19822259C2 (de) * 1998-05-18 2000-07-06 Siemens Ag Sendeeinrichtung und Bussystem zur Datenübertragung
US6657966B1 (en) * 1998-12-23 2003-12-02 Adc Telecommunications, Inc. Test access system and method for digital cross connect communication networks
US7206547B2 (en) * 2003-09-30 2007-04-17 Elektrobit Oy Method of testing electric circuit, and arrangement
DE102005008158B4 (de) * 2005-02-18 2006-12-07 Infineon Technologies Ag Schaltungsanordnung zur Korrosionsschutzstromeinspeisung und Leitungstest für Zweidrahtleitungen
US8280730B2 (en) * 2005-05-25 2012-10-02 Motorola Mobility Llc Method and apparatus of increasing speech intelligibility in noisy environments
US8232807B2 (en) * 2006-10-25 2012-07-31 Textron Innovations Inc. Apparatus for detecting imbalances in a paired line
US20080100308A1 (en) * 2006-10-25 2008-05-01 Robert Crick Apparatus for detecting imbalances in a paired line

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3969594A (en) * 1972-07-10 1976-07-13 Porta Systems Corporation Automated telephony testing and polling apparatus and system
US3842218A (en) * 1972-07-10 1974-10-15 Porta Systems Corp Automated telephony testing and polling apparatus
US4446341A (en) * 1982-07-16 1984-05-01 Bell Telephone Laboratories, Incorporated Mechanized testing of subscriber facilities

Also Published As

Publication number Publication date
AU4774085A (en) 1986-03-24
SE8601959L (sv) 1986-04-28
GB2204763B (en) 1989-07-12
GB8808141D0 (en) 1988-05-11
GB2183126A (en) 1987-05-28
WO1986001663A1 (fr) 1986-03-13
GB8815271D0 (en) 1988-08-03
GB2204763A (en) 1988-11-16
GB8610241D0 (en) 1986-05-29
GB2183126B (en) 1989-06-21
US4611101A (en) 1986-09-09
EP0191077A1 (fr) 1986-08-20
CA1245739A (fr) 1988-11-29
SE8601959D0 (sv) 1986-04-28

Similar Documents

Publication Publication Date Title
US4611101A (en) Method and apparatus for testing communication systems
US5640433A (en) Conversion of synchronous/asynchronous signals
US4639557A (en) Remote testing system for electrical circuits
US5402073A (en) Near-end communications line characteristic measuring system with a voltage sensitive non-linear device disposed at the far end
US4255792A (en) Automated analog circuit test system
US4112264A (en) Testing and switching system including remotely controllable stations for information transmission and communications networks and systems
US5228072A (en) Multiwire-pair telecommunications test system
US4418312A (en) Apparatus for testing multi-conductor cables
US4870675A (en) Remote testing of metallic loops with a trans hybrid signal
SE450680B (sv) Sett att styra en dubbelriktad telfonabonnentledningskrets samt telefonabonnentledningskrets med en programmerbar signalgenerator for genomforande av settet
CA2036605A1 (fr) Dispositif de reconstitution de porteuse pour les communications via un reseau de distribution d'electricite
US4277740A (en) Cable tester for multipair cables
US5297135A (en) Method and apparatus for determining directionality of communication signals on a communication channel
US4629836A (en) Method and apparatus for accessing communication systems
DE3064141D1 (en) Circuit arrangement for determining the switching state of a subscriber line in telephone exchanges
US4320338A (en) Methods of and apparatus for determining the capacitance of a transmission line by integrating line currents
US5771262A (en) Impedance adapter for network coupler cable
CN210109189U (zh) 电信息监测装置
US4550223A (en) Test device, and method for locating faults in a two-lead line
US5999593A (en) System and method for automatic PBX detection
US4677665A (en) Method and apparatus for electronically detecting speech and tone
US5644617A (en) Method and apparatus for testing cables
CN217238214U (zh) 绝缘电阻在线监测预警系统
CA1249086A (fr) Interface a trois relais montee entre un central et une ligne interurbaine
EP1825660B1 (fr) Procede et systeme de mesures de distance

Legal Events

Date Code Title Description
NAL Patent in force

Ref document number: 8601959-3

Format of ref document f/p: F

NUG Patent has lapsed