manual aircraft data input system
administration data network
B-ISDN Broadband – Integrated Service Data Network
Broad band Integrated Service Data Network (B-ISDN)
Cable Broadband Data Network
Cellular Digital Packet Data Network
circuit switched data network
Circuit Switched Public Data Network
Circuit Switched Public Data Network CSPDN
Circuit-Switched Data Network(CSDN)
Circuit-switched Public Data Network
Circuit-Switched Public Data Network CSPDN
common user data network
Communications data network