Info-Communication Systems to Support Crisis Management. A nationwide network links bodies including the NPA, RPBs, Prefectural Police Headquarters, police stations and koban via communication lines such as wireless multiplex lines, specialized lines for telecommunications operators, and satellite transmission lines which the police independently install, maintain, and manage. Info-communications departments are set up in each prefecture as national agencies to support Prefectural Police activities and set up in each RPB to provide instruction and coordination regarding the operation of communication facilities in the event of a serious inter prefectural incident.