Patent ID: 8189490

Claim:
A message analyzer for analyzing messages which are transmitted via at least one service access point from layers of an Open Systems Interconnection (OSI) reference model of an end system of a subscriber of a mobile telephone system, the message analyzer comprising: a storage device for storing messages; a selector for reading in a first sequence of messages, wherein the first sequence of messages is a sequence of temporally successive messages; and a display device for displaying, on a single screen, a first region and a second region, wherein the first sequence of messages is read in by the selector from the storage device and displayed in the first region, wherein the selector determines, for the at least one service access point, a first characteristic feature of the messages which are transmitted via the at least one service access point and a course of the first characteristic feature is displayed on the display device in the second region, wherein the selector reads a second sequence of messages dependent upon a selection of a specific point of the course of the first characteristic feature that is selectable in the second region, and wherein the display device is configured to display a selectable marking produced automatically by the selector in the second region based on a predefined additional item of information stored during storing the messages in the storage device, and wherein upon selection of the marking, the second sequence of messages which corresponds to the specific point of the selected marking is read in from the storage device.