Convergence of services in a common network is inevitable. In order to support high-quality service to the customer, the LAN needs to be redesigned to meet delay, jitter, and loose characteristics. We have developed a design that can meet voice, video, and data needs in LAN and at the same allow the WLAN to be merged with the wired LAN. We equipped a few small offices with this design and are working to implement it in a 300-user office. We have been successful in replacing end-of-life products with new VoIP and are therefore positioned for worldwide VoIP down the road.