Academic Editor: J. Jiang
Copyright © 2010 M. Jose Domenech-Benlloch et al. This is an open access article distributed under the
Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Retrial queues can only be solved in a closed form in very few and simple cases,
so researchers must resort to approximate models. However, most of the papers that
propose approximate models assume the convergence of the proposed models to their
exact counterparts, without providing a rigorous mathematical proof. In this paper we
demonstrate the convergence of finite truncated models with two reattempt orbits.