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Record W2168134681 · doi:10.1109/ccece.2004.1347670

Single-ended DSL line tester

2004· article· en· W2168134681 on OpenAlex

Why this work is in the frame

A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.

affAt least one author lists a Canadian institution in the pinned OpenAlex snapshot.
fundA Canadian funder is recorded on the work.

Bibliographic record

Venuenot available
Typearticle
Languageen
FieldEngineering
TopicRFID technology advancements
Canadian institutionsUniversity of Saskatchewan
FundersNatural Sciences and Engineering Research Council of Canada
KeywordsDigital subscriber lineReflectometryReflection (computer programming)Telephone lineFault (geology)Computer scienceElectric power transmissionClassification of discontinuitiesElectronic engineeringTransmission lineElectrical engineeringLine (geometry)Electromagnetic coilReturn lossTransmission (telecommunications)Time domainTelecommunicationsEngineeringTelephonyGeology

Abstract

fetched live from OpenAlex

Telephone lines can have discontinuities caused by line faults, coils and bridge taps that impede transmission. Telephone companies (telcos) must locate and repair these faults in order to enable high-speed data transmission. It is useful for a telco to 'prequalify' lines for future DSL services, so a customer can be promptly informed if high-speed services can be supplied This paper proposes a new technique called frequency domain reflectometry (FDR) to accurately locate impairments in telephone lines and determine the reflection magnitude caused by faults. The measurement produces a result similar to the well-known time domain reflectometer (TDR); however, DSP techniques are now applied to provide enhanced resolution and range beyond 3 km. In addition to reflection magnitude, the new technique can measure reflection angle which helps determine the nature of the fault (open circuit, short circuit, broken wire, coil, etc.).

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

Full frame distilled prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Bench or experimental · Consensus signal: Bench or experimental
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.295
Threshold uncertainty score0.413

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0000.000

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.013
GPT teacher head0.213
Teacher spread0.200 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it

Quick stats

Citations19
Published2004
Admission routes2
Has abstractyes

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