Specifications

EN
23
Status
The Status screen displays information on connection line status, data rate, operation
data and defect indication, and statistics.
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 An interleaver is basically a buffer used to introduce a delay,
allowing for Correction 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.