ADSL
Parameter | Description |
Status |
|
Line Status | Shows the current status of the ADSL line. |
Data Rate |
|
Upstream | Actual and maximum upstream data rate. |
Downstream | Actual and maximum downstream data rate. |
Operation Data/ |
|
Defect Indication |
|
Noise Margin |
|
Upstream: Minimum noise margin upstream.
Downstream: Minimum noise margin downstream.
Output Power | Maximum fluctuation in the output power. |
Attenuation |
|
Upstream: Maximum reduction in the strength of the upstream signal.
Downstream: Maximum reduction in the strength of the downstream signal.
Fast Path FEC Correction
Interleaved Path FEC Correction
Fast Path CRC
Error
Interleaved Path
CRC Error
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.
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.
Indicates the number of Fast Path Cyclic Redundancy Check errors.
Indicates the number of Interleaved Path Cyclic Redundancy Check errors.
