说明：  对电话信令呼叫系统的阻塞率进行仿真，仿真采用Erlang B模型，即呼叫阻塞清除模型，并与理论的阻塞率公式进行比较，附件里面有源码的WORD文档，还有仿真报告
(Call signaling for the call blocking rate system simulation, simulation using Erlang B model, that is, removal of call blocking model, and with the theoretical formula of the blocking rate compared to the annex which has source WORD document, as well as simulation report)