We have the same issue - a couple of weeks ago we switched from a physical landline with Verizon to a VOIP with Comcast. It seemed to be ok until yesterday, when the ADT system started beeping and flasing CH Trouble. We called ADT and their testing shows they are not getting a signal from our alarm. I had no idea when we switched to VOIP that this would be a problem. Wondering if once a month Comcast runs something that disables the ability to connect to ADT. Otherwise why wouldn't we have had this error come up 2 weeks ago?
ADT said they could send someone out to "fix it" but it would cost "an arm and a leg" - and that I should call Comcast and have them walk me through how to fix it or send someone out. I know Comcast isn't going to send someone out for free, and from what I've read online, there isn't any way to walk me through fixing it. I'll probably call them, but I'm not optimistic.
I'm tempted to cancel my ADT account, which we've had for 12 years, and get a Ring system. Ring monitoring is $10 a month vs ADT which is almost $40 a month. And I'm guessing if I tell ADT I'm going to cancel they might be more helpful.
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