Method (71) of, and support node (23; 52, 53; 81) for requesting registration of stationary user equipment in a cellular telecommunication system (12; 20; 51). The system (12; 20; 51) comprising at least one support node (23; 52, 53; 81) for providing communication services to a plurality of users comprising mobile and stationary user equipment (2, 9; 21), each user equipment (2, 9; 21) having a unique equipment identity. Upon receipt of a registration request (28; 54; 72) of a user equipment (2, 9; 21), the support node (23; 52, 53; 81) determines (35; 73) whether the user equipment (2, 9; 21) is stationary user equipment and compares (74) received location information and equipment identity of stationary user equipment with location information and equipment identity of the stationary user equipment stored (14) in the telecommunication system. The registration request (28; 54; 72) is rejected (61; 77) if the comparison does not match (75 No).