The mechanism of Ethernet signal transmission over the air is considered. The advantage of this transmission method is the minimum delay with high-performance backhaul. It is shown that monitoring delay using brute-force methods at the port or software level does not reveal delay problems affecting certain traffic classes. For deep performance delays, it is necessary to take measurements that cover the full service path at the demarcation points and at the key nodes between them. The relevance of methods for delays compensation in infocommunication networks is confirmed and shown defined by direct influence of a delay on quality of service. The complex decision of delays suppression on the basis of an optimum estimation of a regulator mode is offered