Inbound problem

Hi everybody,
my problem is, that I cannot receive a call for a particular trunk to a particular extension. My setup:

Trunk 1 Inbound Destination Time condition
Trund 2 Inbound Destination Ring Groups

Extensions: 420 (lasting for years) and 430 (New creation) are in the Ring Group

If I setup my Linphone with extension 420 both trunks are coming in. If I setup my Linphone with extension 430 only trunk 2 comes in. I am sitting here for hours to find out the problem but since the extensions are simular I am not really successfull. Does anybody have any idea what I might be missing? Thanks for some help.

Where does the time condition point to?