==== Handoff ====
process of handoff was created. Handoff occurs when the mobile telephone network automatically transfers a call from radio channel to radio channel as a mobile crosses adjacent cells....
veru good information
The final obstacle in the development of the cellular network involved the problem created when a mobile subscriber traveled from one cell to another during a call. As adjacent areas do not use the same radio channels, a call must either be dropped or transferred from one radio channel to another when a user crosses the line between adjacent cells. Because dropping the call is unacceptable, theprocess of handoff was created. Handoff occurs when themobile telephone network automatically transfers a call from radio channel to radio channel as a mobile crosses adjacent cells.
==Evolution of Cellular Systems==