Abstract: The subject matter discloses a wireless transmitter comprising a network interface for receiving and transmitting the data; storage for storing the data received at the transmitter by the network interface; a processor for handling the data stored in the storage and determining the work channel; and an indicating module for indicating to the processor that a level of quality of service provided in transmitting the data to the receiver such that the transmitter is capable of switching the work channel as a function of the level of quality of service. The data may be medical related data, more specifically ECG data.