Place the headset so that it's resting on the charging base (pointy side up)
Find the orange and yellow ports at the back of the base. Unplug them both
Note which of the white dipswitches you have flipped. Once you have a mental or written note, flip all six switches down. Use your finger or a pen if you're having trouble
Plug the yellow (and orange if you had it) cords back into their ports
Flip all six of the white dipswitches back into the up position
Flip the white dipswitches back into the configuration you had them when you started