Handoff

1. In cellular mobile systems, the process of transferring a phone call in progress from one cell[?] transmitter and receiver and frequency pair to another cell transmitter and receiver using a different frequency pair without interrupting the call.

2. In satellite communications, the process of transferring ground-station[?] control responsibility from one ground station to another without loss or interruption of service.

Source: from Federal Standard 1037C and from MIL-STD-188