Queuing theory in a very simple Definition is a branch of mathematics for analysis and management of waiting lines. It is developed in the first years of twentieth century when telephone waiting Lines were studied. Servers are not necessarily human beings but in queuing systems that human Agents are servers, it is possible to consider the queuing system as a dynamic system. This is because in these systems, elements of system are interactive and they are interacting with each other. In this paper dynamics of a queuing system are presented by a Dynamic model using System Dynamics Approach. Afterwards, dynamics of a simple Queuing system is studied by investigating impacts of some elements on other ones.
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