line of communication
round
network topology
topology
communications technology
telecommunication equipment
telecom equipment
telecommunication system
telecom system
teletransmission
connection
information system
communication system
outsending
channels
squawk box
electronic communication
protocol
cyberworld
catenet
wireway
sender
canalisation
structured wiring
register
voicemail
communicology
bulletin board system
voice mail
transmission
data system
LAN
local area network
telecom
intercom
telecommunication
contact
telegraphing
e-communication
net
digital subscriber line
body
introduction
SDSL
message-oriented middleware
ground mobile force
telephone call
radiogram
dial-in
manumatic