%A Giorgio Gnecco %A Marco Cello %A Marcello Sanguineti %X A simple criterion is proposed to improve suboptimal coordinate-convex policies in Call Admission Control problems with nonlinearly constrained feasibility regions. To test the criterion, numerical simulation results are given. Finally, some structural properties of the optimal coordinate-convex policies are proven, which do not depend on a complete knowledge of the nonlinear boundary of the feasibility region. %D 2010 %L eprints1668 %C Lisbon, Portugal %T On call admission control with nonlinearly constrained feasibility regions %P 105 %O 24th European Conference on operational research