This paper reports on an extended simulation analysis of the Cyclic Reservation Multiple Access (CRMA) Media Access Control (MAC) protocol. The analysis is divided into two parts. In the first part we study CRMA in underload conditions, i.e. when the offered load is lower than the medium capacity. In the second part we study CRMA in overload conditions, i.e. when the offered load is higher than the medium capacity. Our results show that in underload conditions the behaviour of CRMA depends on load distribution and node position, but it is quite predictable and basically fair. In overload conditions the node buffer may be a critical parameter and the network becomes fair only if the buffer size is greater than a threshold. The value of this threshold depends on the workload and on network parameters. Finally, we present a case study to show that CRMA is suitable to service integration.