Sensitivity analysis of a single server finite-source retrial queueing system with two-way communication and catastrophic breakdown using simulation

In this paper, a finite-source retrial queueing system with twoway communication is investigated the help of simulation program own. If randomly arriving request from finds single server idle its service starts immediately, otherwise it joins an orbit where generates retrial/repeated calls after random time. To increase utilization when becomes time outgoing called for infinity source. Upon arrival if busy, goes to buffer and again immediately. requests are referred as primary or incoming ones while infinite source secondary requests, respectively. The times supposed be variables having different distributions. However, catastrophic failures may happen all in system, that orbit, unit, buffer. case, return finite-source, lost. operation restored Until restoration finished no arrivals take place system. All above-mentioned independent variables. novelty paper perform sensitivity analysis failure restoration/repair on main characteristics illustrate effect distributions same average variance value. Our aim determine distribution number response arbitrary without successful service, also successfully served request, total probability leaves because event. Results illustrated graphically obtained by our program.