GB2056092B - Line signal monitor - Google Patents

Line signal monitor

Info

Publication number
GB2056092B
GB2056092B GB7927421A GB7927421A GB2056092B GB 2056092 B GB2056092 B GB 2056092B GB 7927421 A GB7927421 A GB 7927421A GB 7927421 A GB7927421 A GB 7927421A GB 2056092 B GB2056092 B GB 2056092B
Authority
GB
United Kingdom
Prior art keywords
line signal
signal monitor
monitor
line
signal
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.)
Expired
Application number
GB7927421A
Other versions
GB2056092A (en
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to GB7927421A priority Critical patent/GB2056092B/en
Publication of GB2056092A publication Critical patent/GB2056092A/en
Application granted granted Critical
Publication of GB2056092B publication Critical patent/GB2056092B/en
Expired 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
    • G01R31/58—Testing of lines, cables or conductors

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
GB7927421A 1979-08-07 1979-08-07 Line signal monitor Expired GB2056092B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7927421A GB2056092B (en) 1979-08-07 1979-08-07 Line signal monitor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB7927421A GB2056092B (en) 1979-08-07 1979-08-07 Line signal monitor

Publications (2)

Publication Number Publication Date
GB2056092A GB2056092A (en) 1981-03-11
GB2056092B true GB2056092B (en) 1983-04-27

Family

ID=10507029

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7927421A Expired GB2056092B (en) 1979-08-07 1979-08-07 Line signal monitor

Country Status (1)

Country Link
GB (1) GB2056092B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2096514B1 (en) * 1993-12-31 1998-02-16 Telefonica Nacional Espana Co POINT EXPLORATION CIRCUIT.
AT406534B (en) * 1996-07-03 2000-06-26 Ericsson Austria Ag CIRCUIT ARRANGEMENT FOR DETECTING ANALOG SWITCHING AND TEST SIGNALS
JP2000049939A (en) * 1998-07-31 2000-02-18 Nec Corp Subscriber line test device and test method

Also Published As

Publication number Publication date
GB2056092A (en) 1981-03-11

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee