SMC Networks AR4505GW manual Following items are included on the Adsl status

ADVANCED SETUP

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	The number of Fast Path Cyclic Redundancy Check errors.
Error
Interleaved Path	The number of Interleaved Path Cyclic Redundancy Check
CRC Error	errors.
Loss of Signal	Momentary signal discontinuities.
Defect
Fast Path HEC	Fast Path Header Error Concealment errors.
Error
Interleaved Path	Interleaved Path Header Error Concealment errors.
HEC Error

4-55