A stack protocol of CTM type with quartet feedback

In this paper, we analysed a stack protocol of the CTM (Capetanakis-Tsybakov-Mikhaikov) type with quartet feedback. We obtained the explicit expression of the expectation of CRI (Collision Resolution Interval) duration for the delayed access case. By means of numerical calculation we gave respectively the maximal capacities of channel of 0.4140 and 0.41445 packets/ slot for both the delayed case and immediate cases.