I have spoken to tech support in the past and was told to turn the phone off and back on daily. I was also told that I should call the *228 if I notice a problem. I have done this in the past, the real problem is that my phone is my link to my job. I missed out on several hours of work today because I received a voicemail notification 5 hours after the call was made. It doesn't show that I have a missed call and the phone never rang...any new suggestions?