AU3009792A - A process for checking the operability of transmission circuits for communications signals - Google Patents

A process for checking the operability of transmission circuits for communications signals

Info

Publication number
AU3009792A
AU3009792A AU30097/92A AU3009792A AU3009792A AU 3009792 A AU3009792 A AU 3009792A AU 30097/92 A AU30097/92 A AU 30097/92A AU 3009792 A AU3009792 A AU 3009792A AU 3009792 A AU3009792 A AU 3009792A
Authority
AU
Australia
Prior art keywords
signals
subscriber
analog
transmitter
system unit
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.)
Granted
Application number
AU30097/92A
Other versions
AU649363B2 (en
Inventor
Martin Brahms
Thomas Bratschke
Wolfgang Fritz
Andreas Timmermann
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.)
KE Kommunikations Elektronik GmbH and Co
Original Assignee
KE Kommunikations Elektronik GmbH and Co
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 KE Kommunikations Elektronik GmbH and Co filed Critical KE Kommunikations Elektronik GmbH and Co
Publication of AU3009792A publication Critical patent/AU3009792A/en
Application granted granted Critical
Publication of AU649363B2 publication Critical patent/AU649363B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • H04M3/302—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor for subscriber's lines, for the local loop using modulation techniques for copper pairs
    • H04M3/303—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor for subscriber's lines, for the local loop using modulation techniques for copper pairs and using PCM multiplexers, e.g. pair gain systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/04—Selecting arrangements for multiplex systems for time-division multiplexing

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)
  • Transmitters (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
  • Transceivers (AREA)
  • Communication Control (AREA)
  • Selective Calling Equipment (AREA)
  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

A method is described for testing the operation of transmission links for telecommunications signals in a telephone network, with which the signals of an exchange are fed in as analog signals, are transmitted in a data stream as digital signals between a system unit of the exchange and at least one subscriber and are fed once more as analog signals at the subscriber end from a system unit of the subscriber to a terminal of the subscriber. A transformer with a hybrid circuit, and also A/D converters, a control block and a line codec are provided in both system units between the analog and digital interfaces. A transmitter and a receiver for digital signals are connected in the control block of at least one of the system units to the transmission link of one transmission direction. When the link is checked and an associated activation of the transmitter performed, the transmission link for the data stream of the digital signals is interrupted and at least the hybrid circuit of the system unit whose transmitter is activated is simultaneously disconnected from the analog interface.
AU30097/92A 1991-12-13 1992-12-11 A process for checking the operability of transmission circuits for communications signals Ceased AU649363B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4141090 1991-12-13
DE4141090A DE4141090A1 (en) 1991-12-13 1991-12-13 METHOD FOR CHECKING THE FUNCTIONALITY OF TRANSMISSION LINKS OF MESSAGE TECHNICAL SIGNALS

Publications (2)

Publication Number Publication Date
AU3009792A true AU3009792A (en) 1993-06-17
AU649363B2 AU649363B2 (en) 1994-05-19

Family

ID=6446949

Family Applications (1)

Application Number Title Priority Date Filing Date
AU30097/92A Ceased AU649363B2 (en) 1991-12-13 1992-12-11 A process for checking the operability of transmission circuits for communications signals

Country Status (7)

Country Link
EP (1) EP0553436B1 (en)
AT (1) ATE153819T1 (en)
AU (1) AU649363B2 (en)
DE (2) DE4141090A1 (en)
DK (1) DK0553436T3 (en)
ES (1) ES2103026T3 (en)
IL (1) IL104038A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004026016A1 (en) * 2004-05-27 2005-12-22 Siemens Ag Subscriber to digital codec connection line test procedure uses test equipment connected to codec and tone generator to measure reflection

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2735341C3 (en) * 1977-08-05 1984-05-10 Standard Elektrik Lorenz Ag, 7000 Stuttgart Arrangement for the continuity test in telecommunication systems
US4870675A (en) * 1988-11-28 1989-09-26 American Telephone And Telegraph Company Remote testing of metallic loops with a trans hybrid signal
US4949355A (en) * 1989-01-23 1990-08-14 Rockwell International Corporation Test access system for a digital loop carrier system
ATE145507T1 (en) * 1990-04-12 1996-12-15 Siemens Ag METHOD FOR CHECKING TRANSMISSION CHARACTERISTICS OF A SUBSCRIBE CONNECTION CIRCUIT

Also Published As

Publication number Publication date
ES2103026T3 (en) 1997-08-16
ATE153819T1 (en) 1997-06-15
AU649363B2 (en) 1994-05-19
EP0553436A2 (en) 1993-08-04
DK0553436T3 (en) 1997-12-22
DE59208551D1 (en) 1997-07-03
IL104038A0 (en) 1993-05-13
EP0553436B1 (en) 1997-05-28
DE4141090A1 (en) 1993-06-17
IL104038A (en) 1996-07-23
EP0553436A3 (en) 1993-10-27

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