This page shows the signal attributes of the gateway's ADSL connection.
At the bottom of this page, there is a button for running an ADSL BER Test (bit error rate). This test determines the quality of the ADSL connection. There is information on this test below the table describing the fields.
This table describes the fields on the page:
Mode: This is the modulation protocol — G.DMT, T1.413, or G.lite.
Type: The channel type, which can be Interleave or Fast.
Line coding: This indicates whether Trellis coding is off or on.
Status: This is the status of the DSL link.
Link power state: Displays the power management state of the ADSL connection.
SNR margin (dB): This is a signal-to-noise ratio (SNR) margin for traffic going in both directions.
Attenuation (dB): An estimate of the average loop attenuation downstream and upstream.
Output power (dBm): The total output power in both directions.
Attainable rate: This is the maximum achievable downstream rate.
Rate (Kbps): The actual rate at which data is flowing in both directions.
K: This is the number of data bytes in an ADSL data frame.
R: The number of redundant check bytes per Reed-Solomon code word.
S: The length of the Reed-Solomon code word, in data frames.
D: The interleaver depth.
Delay: The delay, in microseconds, of the ADSL connection.
Super frames: This is the total number of super frames.
Super frame Errors: The number of super frames received that had errors.
RS words: This is the total number of Reed-Solomon code words.
RS correctable Errors: The number of Reed-Solomon code words with correctable errors.
RS uncorrectable Errors: The number of R-S code words that had uncorrectable errors.
HEC Errors: The total number of header error checksum errors.
OCD Errors: The number of out-of-cell delineation errors.
LCD Errors: The total of lost-cell-delineation errors.
Total Errors: The total number of errors.
Data Cells: The number of data cells.
Bit Errors: The number of bit errors.
Total ES: The total extended superframe errors.
Total SES: The total severely errored seconds.
Total UAS: The unavailable errored seconds
ADSL BER (Bit error rate) Test
A bit error rate test is available from the ADSL statistics page.
Follow this procedure to run a bit error rate test.
Warning: Running this test may cause your ADSL connection to be lost.
Below the table in the ADSL statistics page, click the ADSL BER Test button.
In Tested time, pick a length for the test. Then click Start when ready to begin the test.
The window shows you the test status. You can click Stop any time to end the test.
The results appear in the window when the test is done.
