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1.9 Loopback Testing
The UniPhyer LB-UA2348 supports ATM and ADSL PhyAdapter loop diagnostics.
ATM:
The system provides F5 end-to-end or segment loopback.
ADSL:
The system provides Dual Ended Loop Testing (DELT), known as the PhyAdapter Lop Test, for
each ADSL line on a per port basis, according to the definition per section 8.12.3 of ITUT G992.3.
The following test parameters are supported:
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Channel Characteristics Function H(f) per subcarrier (CCF-ps),
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Quiet Line Noise PSD QLN(f) per subcarrier (QLN-ps),
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Signal-to-Noise Ratio SNR(f) per subcarrier (SNR-ps),
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Line Attenuation (LATN),
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Signal Attenuation (SATN),
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Signal-to-Noise Ratio Margin (SNRM),
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Attainable Net Data Rate (ATTNDR),
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Far-end Actual Aggregate Transmit Power (ACTATP),
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Near-End Actual Aggregate Transmit Power (ACTATP).
Содержание UniPhyer LB-UA2324
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