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Abstract

A protocol conversion system that provides improved reliability in data transmission and reception. The system comprises a first node belonging to a network A, a second node belonging to another network B, and a protocol converter disposed between the two nodes. The first node uses a first communications protocol that defines a set of rules for communications in the network A, while the second node uses a second communications protocol for the network B. Serving as a relaying device between the first node and second node, the protocol converter converts the communications protocol of the messages traveling between them. The protocol converter comprises a first message processor to process the messages according to layer definitions of the first communications protocol, a second message processor to process the messages according to layer definitions of the second communications protocol, and a first protocol converter that adds and removes some control information to/from the messages for protocol conversion. The second node comprises a second protocol converter working as a counterpart of the first protocol converter.

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