Abstract: The invention relates to a method of channel allocation in a fixed radio link network. For each radio link to be commissioned channels, interference level measurement on each available channel of the frequency band is carried out. Based on the interference measurements, best transmission and reception channel for the link are selected. Thereafter, the radio link can be commissioned and measurements in the next radio link to be commissioned can be started. Instead of using a fixed and pre-set channel for the fixed radio link, a channel is assigned autonomously and automatically when commissioning the link, depending on interference measurement results and/or distance measurement results. The possibility for automatic channel selection decreases the amount of commissioning work by removing the need for detailed frequency planning and fixed channel setting at the factory for each radio.