Cellular Digital Packet Data Network
Packet Switched Public Data Network
Packet Switched Public Data Network PSPDN
packet switching data network
PSDN Packet Switched data network
public packet data network
packet switched data network
administration data network
electric power data communication network
electric power broadband data com munication network
district dispatching data network
distributed packet radio network
distributed data processing network
Dispatching Data Network
digital data network DDN