Install AT&T internet – NVG589. Learn how to access NVG589 settings and information. Colored LEDs on your Motorola® Gateway indicate the status of various port activity. NVG589 by ARRIS Motorola information and hardware knowledge base. This Arris NVG589 DSL Modem/Wireless Router is in perfect working order. Unplug all ethernet cables from the NVG510/NVG589 (especially ethernet feed line plugged into green terminal) except for the one going into the aforementioned.