Upon installation, eight LEDs on the front of the modem will appear blinking one by one:

A Power LED , down LED ,up LED online LED , 2 Wi-Fi LEDs , and
2 telephone LEDs .

Once the first 4 lights become solid, the modem is now ready for use the 2 Wi-Fi LEDs would flash once you
are connected to and using Wi-Fi.

The Telephone LEDs only light if you have Telephone service active, and they blink when the phone is in use.