The Integration of the Control Network with the ISDN User Network

This article presents an idea of integration of a control network with the S-bus of an ISDN user network. The proposed solution assumes to assure a complete compatibility of the constructed system with the effective standards. The main advantage of the solution consists in an important reduction of costs related to the implementation of a field network, resulting from the utilisation of the existing wiring as well as manufactured in huge quantities transmission interfaces. Moreover, the control and monitoring system uses proven mechanisms and transmission protocols, which guarantee its stability and reliability. The article include the comparison of the transmission mechanisms used in the proposed solution with those used in the well known CAN standard. We have also presented the results of a quantitative analysis of the integrated system, permitting to assess its suitability for different applications.