reliable communication <communications> Communication where messages are guaranteed to reach their destination complete and uncorrupted and in the order they were sent. This reliability can be built on top of an unreliable {protocol} by adding sequencing information and some kind of {checksum} or {cyclic redundancy check} to each message or {packet}. If the communication fails, the sender will be notified. {Transmission Control Protocol} is a reliable protocol used on {Ethernet}. (2004-09-14)