In a packet-switched communications network, each of a plurality of node stations is responsive to a request for a circuit-switched call from a source user terminal and transmits a control packet and a message packet in succession to the other node stations. The control packet contains a source address,...http://www.google.es/patents/US4815071?utm_source=gb-gplus-sharePatente US4815071 - Packet-switched communications network for efficiently switching non-burst signals
Packet-switched communications network for efficiently switching non-burst ...
