The increasing complexity of telecommunication configuration solutions has driven a rising interest in effective object-oriented modeling of solutions with linear complexity scaling. In order to accomplish this, the decision was to implement and develop new configuration engine for the official Ericsson Product Catalog used by sales and marketing personnel of Ericsson. Telecommunication sales requirements are to achieve simple and fast orders for solutions based on different complexity levels. This paper gives an overview of the whole advanced system for assembly and sales process developed to support all specific requirements.