Xb3 Modem Tel 1 AND Tel 2 had solid lights on this morning
I have an XB3 gateway and this morning noticed that both Tel 1 and Tel 2 lights were solid, indicating 2 phone lines in use. However - I ONLY HAVE ONE PHONE?! I restarted modem and only one light was on. How do I check how /why that 2nd phone line light was on?