only way to monitor the load on the control signaling link 22 a e is to see whether the amount of buffered data on the sending side of the control signaling link is increasing or not the control signaling link 22 a e then has to get overloaded before there is any indication of high load therefore it is necessary to wait for detection of overload before regulation of the load could be started by restricting one or several mobile station 48 groups three bss 44 are in this example connected to the same control signaling link 22 a to send a message to the msc 40 over the control signaling link 22 a e the bs 44 puts the message in a queue which is polled by the device controlling the control signaling link the bs 44 is also arranged to measure the queue length of the buffer according to the present invention the bss 44 also comprise a dummy data generator as an example each bs 44 is allowed to send dummy data of an amount of 5 of the theoretical control signaling link capacity i e the bit rate from the dummy messages makes up 5 of the maximum bit rate of the link the capacity on a link could be lower than the theoretical value because of u201c bad connections u201d which could lead to retransmissions if the link is not congested there will not be any long queues or long delays in those queues if the queue in one of the bss 44 is detected to grow the link utilization is over 100 of the link capacity at.