Abstract: The invention relates to a method for processing a traffic channel request in a cellular radio system. To ensure that the allocation of a new traffic channel would not disturb adjacent cells, the method comprises the steps of: calculating the number of traffic channels in use in a radio cell; measuring the quality of ongoing connections of adjacent cells using at least to some extent the same frequency channels as said radio cell; and preventing the traffic channel from being allocated to a mobile station from said radio cell if the number of traffic channels in use exceeds a predetermined threshold value and if in any of said adjacent cells the mean value of quality for ongoing connections is lower than a predetermined minimum quality value.