Cellular systems have experienced in recent years, significant changes in technology, services, competitiveness, and cost. These changes have become more visible, and therefore closer to users, with the emergence—in the mid-nineties of the twentieth century—from technologies supported wireless standard protocols, as a replacement for cable connections between products electronics. This article thoroughly examines theoretical and practical aspects of Bluetooth technology as a basis for designing a cellular network for voice and data, systematically considering the needs of capacity, coverage, power levels, quality standards and interconnectivity to the network public switched telephone (PSTN) as well as VoIP service.