ADS Technologies NetDSL 800 ADSL Modem version 5.2b1 - Manual (Page 45)

Status Feature
6-3
6.2 LED Panel
From the NetDSL Manager click on the Status icon, click on the Show Details
button, and then select the LED Panel tab.
Depending on where your modem is located, you may have difficulty viewing
the front window LEDs of the NetDSL. The LED Panel tab provides a real-time
display of the front window LEDs and the DSL Line Upstream and Downstream
speeds in Kbps.
Figure 6.3 LED Panel Tab in Status
To return to the Main Status panel, click the Hide Details button. To exit Status
and return to the NetDSL Manager, click the Close button.