About DSL modem lights - SmartRG modems
The operational status of your SmartRG DSL modem is indicated by lights (LEDs). SmartRG modems have lights to indicate power, Wide Area Network (WAN), Local Area Network (LAN), wireless (WLAN), Wi-Fi Protected Set-up (WPS), DSL and Internet connection.
Information is communicated by whether the lights are green, red, off or flashing. Activity on a line is often indicated by flickering lights, when the line is active.
Here's a summary of how to read the lights on SmartRG modems: