This article describes how to view missed calls on your Gigaset R630H or R650H DECT VoIP Phone.
A missed call is defined as a call that rings your phone but is not answered. Calls that don't ring your phone (e.g. if the phone is off or disconnected) will not be logged as a missed call. Additionally if the call rings a group of people and is answered by someone else in the group, it will not be counted as a missed call.