基于会话管理的软交换呼叫控制模型研究

Call Control Model of Softswitch Based on Session Management

针对现有软交换呼叫控制技术缺少对呼叫会话有效地控制导致服务质量低的问题,提出了一种基于会话管理的软交换呼叫控制模型.该模型在原有软交换呼叫控制模型的基础上增加了会话管理子模型,根据会话和呼叫关系建立会话鉴权和准入方法,并通过管理呼叫腿队列中的呼叫腿来减少鉴权次数.仿真结果表明,该模型有效降低了呼叫阻塞率、减小了网络平均时延和负载,进而提高了网络的服务质量.

Existing call control technology of softswitch lack of effective control led to low quality of service. We propose a call control model of softswitch based on session management. The model, based on the original softswitch call control model, adds session management sub – model, establishes a session authentication and access method according to the relations of session and call, and reduces the number of authentication through managing the call leg of legs queue. The simulation results show that the model can effectively reduce the call blocking rate, reduce average delay and network load, and improve the quality of service.