I called Comcast, was told a bunch of lies about
an alarm not being allowed to ring long
enough etc. It must be a central monitoring problem, etc. I was give their monitoring company number, called them and they never received notification of an alarm by the system. Called back to Comcast , was transferred around and hung up on several times before finally getting someone to help with a test. YEP, you guessed it, the junk system NEVER called the monitoring station, no call, nothing. So, for six months I have been paying for a protection service that would NEVER have helped.