In connection with the moulding of tiles and bricks, for example for paving etc. The measuring device determines the protocol delay by using first and second timestamps created respectively before and after a processed packet is obtained from an unprocessed packet by IPsec processing by the communication terminal. The signal to the onoff device could also or instead be initiated by an RF or power line carrier signal to cause the power interruptions. In some cases, the transmitted message is automatically received and answered by the called device. Such an emulator may enable testing of both control information and data applications. Once the reinforcement mat is properly wetted, the mold is pressed into the lower diaphragm.