| 摘要 |
PROBLEM TO BE SOLVED: To build up a distributed network with high flexibility and economy even when the number of controlled speech channel nodes is increased, that is, to change functions of each node, to easily change arrangements of application objects to other node, and to easily change to a redundant configuration in a unit of networks. SOLUTION: All control system nodes 100 (100-1, 100-2) and speech channel system nodes 101 (101-1 to 101-3) are interconnected not by a leased line but a control equipment 102 and the nodes are connected by a PVC(permanent virtual channel) system or a SVC(switched virtual channel). As the communication method between the control system node 100 and the speech channel system nodes 101, the object oriented interface progressing the entire processing is applied by sending/receiving a message between programs in the unit of parallel processing called objects. |
