Abstract: A routing system in a multimedia integrated network formed of nodes connected by links is provided for transmitting various media such as voice, image and data in a packet format. The respective nodes forming the integrated network output the packets in an optimum output direction so that conditions required by various media and reliability of communication are satisfied. Each node includes an interconnection type neural network for determining the packet output direction. An external stimulus input unit outputs an external stimulus to the neurons in the neural network in response to a present state of the integrated network, such as a packet delay time and a packet loss ratio for respective links, and a condition required by the media such as an allowable packet loss ratio. Therefore, the packet is output in an optimum direction which is adaptive to the present state of the integrated network and which satisfies a condition required by the media.

Abstract: The present invention is designed such that the communication quality of a currently connected normal call is deteriorated and the transmission of the normal call is delayed in a network when an emergent call is set. As a result, the required bandwidth of the emergent call is successfully reserved. Furthermore, the present invention is designed such that a deteriorated normal call is detoured to a detour circuit to improve the communication quality of the normal call. In the detouring process, one or more detour circuits are managed for each normal call so that the possibility of a successful detour to a detour circuit can be raised. Additionally, in the normal call detouring process, a plurality of detour circuits guarantee a normal call its communication quality even if a single detour circuit is not enough to meet the required bandwidth of a normal call.

Abstract: An adaptive routing system is used in a network for performing a communication in a packet form obtained by adding address data and data length to the transmission information. This connects nodes having input ports and output ports arranged in a distributed manner, by the input link and output link. This system enables the network to assign the neuron elements to input ports and output ports of respective nodes one by one, inputs a network state to the neuron element to evaluate the traffic condition of the network and determines the output port assigned to the neuron element having the "1" output from among the neuron elements assigned to the output ports of the respective nodes when the outputs of respective neuron elements are not changed after reaching the balanced state, thereby enabling the output of said output port to be produced in the optimum output direction of the packet from respective nodes.