DSL-514 ADSL Router User’s Guide
ADSL
Showtime Firmware Version: This field displays the
ADSL Line Status: This field displays the ADSL connection process and status.
ADSL Modulation: This field displays the ADSL modulation status for G.dmt or T1.413.
ADSL Annex Mode: This field displays the ADSL annex modes for Annex A or Annex B.
ADSL Startup Attempts: This field displays the ADSL connection attempts after loss of show time.
ADSL Max Tx Power: This field displays the transmit output power level of the CPE.
ADSL CO Vendor: This field displays the Central Office DSLAM vendor name, if available
Elapsed Time: This field displays the time of the router has been in operation.
SNR Margin: Amount of increased noise that can be tolerated while maintaining the designed BER (bit error rate). The SNR Margin is set by Central Office DSLAM. If the SNR Margin is increased, bit error rate performance will improve, but the data rate will decrease. Conversely, if the SNR Margin is decreased, bit error rate performance will decrease, but the data rate will increase.
Line Attenuation: Attenuation is the decrease in magnitude of the ADSL line signal between the transmitter (Central Office DSLAM) and the receiver (Client ADSL Router), measured in dB. It is measured by calculating the difference in dB between the signal power level received at the Client ADSL router and the reference signal power level transmitted from the Central Office DSLAM.
Errored Seconds: The error during Showtime, whenever, a given sec contains CRC error, that second will be declared error second.
Loss of Signal: This field displays the count of event of ADSL signal loss.
Loss of Frame: This field displays the count of event of ADSL frame loss.
CRC Errors: This field displays the number of transmit data frames containing CRC errors.
Data Rate: This field displays the ADSL data rate.
Latency: This field displays the latency modes for fast or interleave.
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