Using Quasi Birth And Death Process To Solve The Problem Of A Call Center

From the view of the queuing theory, the most common model for the Call Center was analyzed, and take briefly review some of what has been achieved.The emphasis is a series of call center with impatient, retrials, variable service rate and fault rate of M/M/S/N + M model. Thus utilize the quasi-birth-and-death process to establize the Q martix. And according to the steady-state equation ,we find the steady-state solution.In the course of the discussion, we also give a number of important parameters results, and give a simulation and optimization algorithm design plans which has more practical values.