GB2101751B - Line circuit testing. - Google Patents

Line circuit testing.

Info

Publication number
GB2101751B
GB2101751B GB08120910A GB8120910A GB2101751B GB 2101751 B GB2101751 B GB 2101751B GB 08120910 A GB08120910 A GB 08120910A GB 8120910 A GB8120910 A GB 8120910A GB 2101751 B GB2101751 B GB 2101751B
Authority
GB
United Kingdom
Prior art keywords
line circuit
circuit testing
testing
line
circuit
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
GB08120910A
Other versions
GB2101751A (en
Inventor
Victor Teacher
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 GB08120910A priority Critical patent/GB2101751B/en
Priority to BE2/59768A priority patent/BE893781A/en
Publication of GB2101751A publication Critical patent/GB2101751A/en
Application granted granted Critical
Publication of GB2101751B publication Critical patent/GB2101751B/en
Priority to HK500/87A priority patent/HK50087A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/24—Testing correct operation
    • H04L1/242—Testing correct operation by comparing a transmitted test signal with a locally generated replica
    • H04L1/243—Testing correct operation by comparing a transmitted test signal with a locally generated replica at the transmitter, using a loop-back
    • 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
    • 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
    • H04M3/301—Circuit arrangements at the subscriber's side of the line
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
GB08120910A 1981-07-07 1981-07-07 Line circuit testing. Expired GB2101751B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB08120910A GB2101751B (en) 1981-07-07 1981-07-07 Line circuit testing.
BE2/59768A BE893781A (en) 1981-07-07 1982-07-07 TELECOMMUNICATION SYSTEM TEST METHOD
HK500/87A HK50087A (en) 1981-07-07 1987-06-25 Line circuit testing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08120910A GB2101751B (en) 1981-07-07 1981-07-07 Line circuit testing.

Publications (2)

Publication Number Publication Date
GB2101751A GB2101751A (en) 1983-01-19
GB2101751B true GB2101751B (en) 1985-01-03

Family

ID=10523065

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08120910A Expired GB2101751B (en) 1981-07-07 1981-07-07 Line circuit testing.

Country Status (3)

Country Link
BE (1) BE893781A (en)
GB (1) GB2101751B (en)
HK (1) HK50087A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3723115C1 (en) * 1987-07-13 1989-03-16 Telefonbau & Normalzeit Gmbh Test and measuring device for digital signals
SE501021C2 (en) * 1993-04-01 1994-10-24 Ericsson Telefon Ab L M Device for testing line connections at telephone exchange

Also Published As

Publication number Publication date
HK50087A (en) 1987-07-03
BE893781A (en) 1983-01-07
GB2101751A (en) 1983-01-19

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Legal Events

Date Code Title Description
746 Register noted 'licences of right' (sect. 46/1977)
PCNP Patent ceased through non-payment of renewal fee
728C Application made for restoration (sect. 28/1977)
728W Application withdrawn (sect. 28/1977)