Definition: In telecommunications, a "handoff" is an event in which a communication link between two stations or devices changes from one channel to another. This can be due to a change in the frequency of the transmitted signal, such as by a radio station switching frequencies during transmission, or it may be caused by a change in the quality of the signal, such as by the use of different modulation techniques. In most cases, handoffs occur between two stations or devices that are connected through a telecommunications network.