We provide unified HK/China networking solutions to enhance customers' communication platform. Telecommunication systems in different locations are linked by using VoIP technology through IP network, not only minimizing the expensive long distance calls greater efficiency for internal communication can also be achieved. Furthermore, the system provides an easy channel to solve the problems with clients between different locations. With the network, feature transparency between systems can be provided and telecommunication resources like voicemail, call accounting and contact center in the network can be shared. VoIP terminals can also be deployed to communicate without time and boundary restrictions.