data sending and receiving
program and data management unit
bus receiving and sending system
e-mail sending and receiving protocol
message receiving and sending
messages receiving and sending
Receiving and sending circuit
receiving and sending set
Receiving and Sending Train
sending and receiving of short messages
SMS receiving and sending
speedy receiving and sending
wireless receiving and sending
receiving and sending signal machine
accessing cost for instruction and data
alarm-scanning and data-logging system
alternating voice and data