1. connection-oriented Or connection-based, stream-oriented. A type of transport layer data communication service that allows a host to send data in a continuous stream to another host. The transport service will guarantee that all data will be delivered to the other end in the same order as sent and without duplication. Communication proceeds through three well-defined phases: connection establishment, data transfer, connection release. The most common example is Transmission Control Protocol TCP. Opposite of connectionless, datagram. See also circuit switching, packet switching, virtual circuit. connection-oriented network service CONS Because of the relatively long transit delays and inferior bit error rate of WANs, a more sophisticated connection-oriented protocol is normally used.
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