Wideband communications
European wideband communications system
Low-voltage power line communications
platterpower line communications
Power Line Communications
Power Line Communications Systems
Power-line Communications
microcoded communications line adapter
on-line communications adapter
Double line-line voltage control
line-line extreme distance
line-line topological relation in traffic network
loss-free line (=lossless line =lossless transmission line)
SDSL Single-Line Digital Subscriber Line，Single-Line DSL
Optical communications Mobile communications
10-line to 4-line BCD encoder
A line used as both sterile and maintaining line