Packet Switched Public Data Network

packet-switched data network (PSDN)

PSDN Packet Switched data network

public packet data network

public packet switched network

public packet-switched network

packet switched data network

Circuit Switched Public Data Network

Circuit Switched Public Data Network CSPDN

Circuit-switched Public Data Network

Circuit-Switched Public Data Network CSPDN

public switched data network {= PSDN}

Public Switched Data Network PSDN

Cellular Digital Packet Data Network

data packet network

loop back testlocal packet switched network

LPCVDlocal packet switched network

LPN Local Packet switched Network

network data packet