SMC Networks 7901BRA2 - annexe 1, Manual

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C
ONFIGURING THE
B
ARRICADE
4-62
Parameter Description
Status
Line Status Shows the current status of the ADSL line connection.
Link Type Shows the type of link.
Data Rate
Upstream Maximum upstream data rate.
Downstream Maximum downstream data rate.
Operation Data/Defect Indication
Noise Margin Maximum upstream and downstream noise margin.
Attenuation Maximum reduction in the strength of the upstream and
downstream signal.
Fast Path FEC
Correction
There are two latency paths that may be used: fast and
interleaved. For either path, a forward error correction (FEC)
scheme is employed to ensure higher data integrity. For
maximum noise immunity, an interleaver may be used to
supplement FEC.
Interleaved Path
FEC Correction
An interleaver is basically a buffer used to introduce a delay,
allowing for additional error correction techniques to handle
noise. Interleaving slows the data flow and may not be
optimal for real-time signals such as video transmission.