Analysis of information sources in references of the Wikipedia article "Virtual circuit" in English language version.
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{{cite journal}}: Cite journal requires |journal= (help)three parameters uniquely specify a connection between source and destination Hosts." "The destination IMP returns a positive acknowledgment for receipt of the message to the source IMP, which in turn passes this acknowledgment to the source Host." "Each link is unidirectional and is controlled by the network so that no more than one message at a time may be sent over it.
{{cite journal}}: Cite journal requires |journal= (help){{cite journal}}: Cite journal requires |journal= (help)Arpanet was virtual circuit." "essentially a virtual circuit service using internal datagram