通信系统中呼叫阻塞率，排队服务等待时间和拥塞概率。-communication system call blocking rate, the queue waiting for service time and congestion probability.

客服来电显示系统 分为服务端和客户端。服务端通过广播来电号码，客服端自动接收显示。一般配合板卡级呼叫中心使用。-Display system customer service call Divided into server and client. The server broadcasts the incoming number, client automatically receives the display. The general coordination board leve