When the "Power" LED has a constant light, your modem is turned on and is ready for use.

When the "DSL" LED flashes, a DSL connection is being established.

When the "DSL" LED has a constant light, a DSL connection is established.

When the "DSL" LED is turned off, there's no connection via the "DSL" port.

When the "Internet" LED flashes green, an internet connection is being established.

When the "Internet" LED has a constant green light, an internet connection is established.

When the "Internet" LED turns solid red, there's an error on the internet connection.

When the "Internet" LED flashes blue, an LTE connection, using the inserted SIM, is being established.

When the "Internet" LED turns solid blue, your modem uses the inserted SIM's LTE internet connection.

When the "Internet" LED is turned off, there's no connection to the internet.

When the "Wi-Fi" LED turns solid green, the Wi-Fi connection automatically switches between 2.4 GHz and 5GHz.

When the "Wi-Fi" LED turns solid blue, the Wi-Fi connection doesn't automatically switch between 2.4 GHz and 5GHz.

When the "Wi-Fi" LED flashes, your modem is ready to pair with another device using WPS.

When the "Wi-Fi" LED is turned off, Wi-Fi is turned off.

When the "Telephone" LED turns solid green, a phone connection is established.

When the "Telephone" LED flashes green, you have an ongoing phone call.

When the "Telephone" LED turns solid red, there's an error registering a device connected to the "Phone" ports.

When the "Telephone" LED is turned off, there's no connection via the "Phone" ports.

When the "4G Backup" LED turns solid green, you have a good to medium mobile network signal.

When the "4G Backup" LED turns solid orange, you have a poor mobile network signal.

When the "4G Backup" LED turns solid red, you have no network signal, which may be due to the lack of a SIM or an invalid SIM.