This area is listing all telegrams to monitor them. They can be filtered and paused to get a more detailed impression of them. For its exact location when the application windows are in their default position refer to number 9 in Figure 3.1. 
Figure 3.23.: Telegrams
The check box "pause" in the top right corner of this area sets the monitor on hold. The telegrams can be viewed now closely. The "dust bin" button next to the check box empties the content of the Telegram Monitor.
The check box "Filter" on the left hand side enables or disables the telegram filter. The filter settings can be called with the link next to it.
If the filter is set, only part of the telegrams sent or received are shown in the telegram monitor. This functionality will make analysis of the data traffic a lot easier. The filter consists of three sections. The module filter defines which XIO subsystem's telegrams should be displayed. The telegram types filter defines which types of telegrams should be displayed. For KNX telegrams, the third section allows to filter a group address range and a specific device IP address. Settings of all three sections are combined with an AND operation. (c.f. Figure 3.24).