| 摘要 |
A transmission system for sub-networks having different transmission protocols. Control codes which are assigned to a message in a source sub-network (2) are converted at the transition with a first intermediate sub-network (3), into reference codes which are compatible with a reference protocol ("meta protocol"). Subsequently, control codes are assigned both to the message and to its reference codes, which control codes are compatible with the protocol in the first intermediate sub-network. At each subsequence sub-network (4,5) transition, control codes are always assigned to both the message and to the reference codes, which control codes are compatible with the local protocol of the subsequent intermediate sub-network ("tunneling"). At the interface of the last intermediate sub-network (5) and the destination sub-network (6), after removing the local control codes, the reference codes are converted into control codes which are compatible with the local protocol of the destination sub-network. In this manner "tunneling" is possible with different protocols in source and destination sub-network. In this context, the number of translation modules is restricted. <MATH>
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