The NEC DSX Cordless DECT Repeater extends the range of the NEC DSX Cordless DECT Telephone. During installation, special software is used to "pair" one or multiple repeaters with a specific Cordless DECT Base Unit. This allows the user to walk through a facility and have their call "handed off" to one or more repeaters. The call is then automatically handed back to the Base Unit when the user returns to their desk.
For more on setting up the Cordless DECT Repeater, as well as the type of coverage you should expect, refer to the Cordless DECT Repeater Guide.