Originally Posted by Kymmy

In simple terms, the signal coming down the cable is measured in relation to the static on the cable, this give you your SNR (signal to noise ratio). If the ratio is low then that means that the signal might be lost.

If you think about it like one voice in a crowd, as long as the crowd whispers you can here the one voice, but if either the one voice goes lower or the crowd goes higher you'll lose the one distinct voice.

That's happening every now and them on your signal hence it'll cause the modem to lose track of the signal