1. A measuring device for measuring system resources which are used by a communication connection in a telecommunication network, said device comprising: means for receiving a request of allocation of system resources to establish said connection, said request indicating a preferred level of said resources, examining means ( 1 ) for examining parameters (BCIE 1 ) indicating said requested resources, allocating means ( 3 ) for allocating, on the basis of the examination by said examining means ( 1 ), available resources indicated by parameters (BCIE 2 ) of the communication network to the communication connection, and comparing means ( 4 ) for comparing the level of the requested resources (BCIE 1 ) and the level of the resources allocated by the communication network (BCIE 2 ).