User guide

C ONFIGURING THE W IRELESS 54M BPS ADSL R OUTER
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The following items are included on the ADSL status page:
Parameter Description
Status
Line Status Shows the current status of the ADSL line connection.
Link Type Two types of link: Fast path and Interleaved path.
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.
Fast Path CRC Error The number of Fast Path Cyclic Redundancy Check errors.
Interleaved Path
CRC Error
The number of Interleaved Path Cyclic Redundancy Check
errors.
Loss of Signal
Defect
Momentary signal discontinuities.
Fast Path HEC Error Fast Path Header Error Concealment errors.
Interleaved Path
HEC Error
Interleaved Path Header Error Concealment errors.
Statistics (Superframes represent the highest level of data presentation.
Each superframe contains regular ADSL frames, one of which is
used to provide superframe synchronization, identifying the
start of a superframe. Some of the remaining frames are also
used for special functions.)
Received cells Number of cells received.
Transmitted cells Number of cells transmitted.