Amongst other mandates of the 4th Generation of Wireless Networks (4G), integration and unification of various technologies is a critical subject. In this paper an end-to-end wireless network deployment in a test-bed environment is established to demonstrate a practical model for integration of various wireless technologies used by ISPs to provide services to large and small enterprise customers. The focus of this research is on the Quality of Service (QoS) considerations in a WiFi-WiMAX integrated network. The results show that integrated deployment does not deteriorate throughput as compared to a standalone WiMAX system. The throughput of approximately 967.5 kbps was observed throughout the path and shows a steady performance across various parts of the network regardless of the technology involved.