said by MisterP:109 people don't know?
Oh well, was worth a shot...
Well, no location given, so hard to determine whether it's local to you, or regional based. Also, if you've been on this forum for any length of time, I'm sure you know who to send PMs to (for Comcast service) if your question hasn't been answered in the timeframe you would like it to be.
Keep in mind that this is a public MB which caters to many ISPs and their reps look at many posts here. 109 views doesn't mean there were 109 people that could assist you with your issue. More likely, 109 people either have an issue, or looking to see who answered you, or are just curious, like me.
Thing is, you really need to contact your local provider techs to determine what the real issue is first. That'll either give you more info to solving your issue, or make things worse...in which case you could come here for answers again, or advice.
EDIT: I am not an internet tech. I am not knowledgeable about your particular modem. There may be a simple explanation for your issue, but I cannot provide it. I am simply offering advice as a consumer.