In a network device to be used for a packet handling, the network device includes a first unit to communicate with a controller according to a first protocol, and to receive a packet handling rule from the controller which is capable of sending the packet handling rule to a plurality of the network devices via a network between the controller and the network device. The present invention also relates to a dosimeter, radiation image storage panel comprising the phosphor of the present invention and in dosimetry applications for applications including scientific, medical and other imaging applications. The gas is created by a gas generating material such as silicon nitride.