The invention relates to a method for suppressing use of a mobile phone network (10) in an area (15), wherein at least part of the area (15) is covered by a first position area (30), a testing unit (16) suppresses a connection (62, 62′, 62′) to the mobile phone network (10) for a terminal device (20,20′,20′) within the first position area (30) depending on at least one rule, a second position area (40) borders the first position area (30) at least in some areas, a position is determined for a terminal device (20, 20′, 20′) within the second position area (40), the testing unit (16) suppresses a connection (62,62′,62) of the terminal device (20,20′,20′) at a position within the area (15) and the testing unit (16) enables a connection (62, 62′, 62) of the terminal device (20,20′, 20) at a position outside the area (15), a third position area (50) that borders the second position area (40) at least in some areas, and the testing unit (16) enables a connection (62, 62′, 62′) of a terminal device (20,20′,20′) within the third position area (50).