In the present invention, a measuring device is proposed 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 (BCIE1) 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 (BCIE2) of the communication network to the communication connection, and comparing means (4) for comparing the level of the requested resources (BCIE1) and the level of the resources allocated by the communication network (BCIE2). Furthermore, a corresponding measuring method is proposed. Using the present invention allows a operator to obtain improved knowledge of system resources.