When the business models that guide the operations of organizations are taken into account, some industries present different characteristics which distinguish them from others, this is the case in the Brazilian market too, as can be seen in its telecommunication sector. After privatization took effect, intense transformation in this segment became more than visible in a multifaceted competitive scenario simultaneously classifying companies as customers, suppliers and competitors of another organization. It is worthwhile to emphasize that rapid technological obsoleteness forces the stakeholders in this sector to predict strategies to fight for market-share so that they can reach their financial targets. In these circumstances, coalition and strategic networks do play an important role seeing that due to their predefined goals the partnerships involved have different features. The aim of this research is to evaluate the strategic implications of allies and networks as a way to gain competitive advantage in the Brazilian telecommunication market. As a result, a study of multiple cases, using three companies, Embratel, Oi and Vivo was performed. Besides this, the influence of agreements with a supplier of telecommunication equipment, Alcatel- Lucent was also carried out. In order to accomplish this undertaking, the triangular strategy of methods (YIN, 1996), which is based on systematic investigation of documents and perceptions using a structured questionnaire as well as complementary follow-up interviews were performed. Data were analyzed using the Macedo-Soares generic integrated model (2000) while the SNA model (Macedo-Soares, 2002) was applied to the relational analysis. The results demonstrated the importance of alliances and the implementation of the market players´ strategic networks. In addition to this, organizational factors of the companies, which allow them to capitalize on their strengths, consequently reducing their weaknesses so as to exploit opportunities and minimizing existing external threats, were identified.