Under normal conditions this light should be. Pulsing blue blue onoff indicates connecting to the internet.

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Sagemcom router red light. The f at st 5260 router is built with a host of features to. Troubleshooting the indicator light is red reboot your modem and the wireless wifi indicator light wait a few minutes. The lower front side of the router has a status light that can have the following conditions. Press and hold for 5 seconds until wps light flashes to enable wps push button pairing mode. Are you able to access the routers web interface while the light is flashing red if so check the status page to see if the adsl or ppp connection has dropped. Find in a few clicks the user guides ue certificates and updates.
Sagemcom f at st 5260 chapter 5. Router is powered on. Thank you for choosing sagemcom. Flashing red red onoff indicates connectivity issues. This light is often labeled as online cable sync or signal and usually has a symbol similar to the internet light on a router as mentioned above. If your router is listed below click on it for specifics sagem 2705 sagem 4320 sagem 1704n actiontec t3200.
Depending on the router the lights may indicate line status internet status and wireless status. Fast flashing blue indicates booting up. Welcome to the sagemcom support site. Check the configuration instructions for information about configuring. Solid blue indicates connected to the internet. Some isps internet service will turn on when the wireless provider require that the mac address of your network is ready for use.
You could try looking up the lights in the sagem 2404 manual but there is a fair chance that the meanings wont be the same with the sky firmware they may even have got rid of some of them. If you are installing your modem for the first time and the dsl light is green but the internet light is red likely your unit hasnt been configured with a correct login and password.