The paper highlights the benefits of Multi Agent System for maintaining QoS in cellular network by evaluating various multi agent based call admission control strategies for different traffic conditions. It establishes the effect of degree of distribution of agents on system performance by comparing the two service architectures, namely centralized and distributed, for reactivity, responsiveness, utilization of resources, communication overhead, sustainability, scalability, robustness and modifiability. It also establishes the relationship between the social attitude of an agent towards the other agents and fairness of resource distribution in distributed architecture. This evaluation helps in building knowledge for choosing the optimal multi agent based call admission and channel borrowing schemes, along with the most suitable service architecture for the required QoS and traffic conditions.