Has anyone else noticed this? A puzzling but minor annoyance.
I moved to digital voice with no issues at all, but we have noticed that every 30 minutes (without exception) our stand-alone caller ID box flashes its screen once, and there is not an incoming call. We just wonder what this signifies? Is the central office "touching base" with our digital voice system? I have set up the new voice mailbox and there are not any messages on it (which in previous landline incarnations may have been such a signal).
