Enabling media negotiation to best utilize network resource in softswitch network

To guarantee quality of service (QoS) is deemed as one of the key features, which could lead next generation network(NGN) into practical deployment. A media negotiation mechanism in softswitch based NGN is presented in this paper. The central point of this solution is to dynamically adjust the bandwidth occupation property of media connection belonging to certain sessions, reserve resource for the sessions, thus guarantee QoS. In this paper, a variety of solutions are stated considering different softswitch architecture and different types of sessions.