664T Status ADSL
ADSL Firmware Version- This field displays the ADSL data pump firmware version number.
Line State- This field displays the ADSL connection process and status.
Modulation- This field displays the ADSL modulation status for G.dmt or T1.413.G.lite
Annex Mode- This field displays the ADSL annex modes for Annex A or Annex B.
Max Tx Power- This field displays the transmit output power level of the CPE.
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 Modem), measured in dB. It is measured by calculating the difference in dB between the signal power level received at the Client ADSL modem and the reference signal power level transmitted from the Central Office DSLAM.
Data Rate- This field displays the ADSL data rate.