A «Computer Obscurantism» hovered dangerously on applications in Computer Sciences in the domain of networks and telecommunications in Africa, specially in Democratic Republic of Congo. The using of extrinsic methods to Computer Sciences sake in majority events the realization of prevaricated results. Inclined by the desire to see the Computer Sciences be really vehicled in their Africa’s quintessence in general manner and specifically in Democratic Republic of Congo, we have chosen to redact this article which is about the «Conceptual Approach of Technique System», gage of the emergency of a good economy based on local talents and no comes from the stranger. The choice is taken from the Structured Analysis Design Technique method for the case of application «Unified Computing System». It’s about on this example to present the conception’s steps for the system integration of unified Informatics Cisco in the network answering to the principle disponibility; That’s to say, predict the rendonduncy of interconnexion equipments and to separate the traffics by the creation of the network segments vituals privy. Design’s tool: Edraw Max.