Today, Fixed Mobile Convergence within Unified Communications is typically enabled either within the enterprise network or the carrier network. While these approaches solve part of the convergence challenge they do not enable a complete Mobility solution in terms of feature transparency, ease of use, feature richness or economics. Tango Networks Abrazo Enterprise Mobility solution, using the federated hybrid architecture, closes these gaps and provides the most complete Enterprise Mobility solutution available. Key challenges such as supporting 100% of mobile devices, clientless solution and minimal IT management are all addressed with this unique hybrid solution.