Important features to be included in queueing-theoretic models of the call center operation are multiple servers, impatient customers, time-varying arrival process, and operator's after-call work (ACW). We propose a fluid approximation technique for the queueing model with these features by...

Important features to be included in queueing-theoretic models of the call center operation are multiple servers, impatient customers, time-varying arrival process, and operator’s after-call work (ACW). We propose a fluid approximation technique for the queueing model with these features by...

In this paper we analyze DAR(1)/D/s Queue with Discrete Mittag-Leffler [DML(a)] as marginal distribution. Simulation study of the sample path of the arrival process is conducted. For this queueing system, the stationary distribution of the system size and the waiting time distribution of an...