When safety and mobility needs in communications, depending of cables is restriction_x000D_ to achieve full freedom of movement. To overcome the restrictions imposed by the cable,_x000D_ wireless communications become an alternative to conventional communication systems._x000D_ There is no doubt that wireless communications are booming and have achieved in recent_x000D_ years the strength maturity and standardization needed to become a real alternative_x000D_ to wired networks, but in these times where computer crime undermines the security hereby_x000D_ we nd it necessary to propose an alternative solution where mobile networks play a_x000D_ role safely to an urban area. We may also note in recent years a sharp decline in economic_x000D_ cost of hardware necessary for wireless communications. That is why users or future users_x000D_ of this technology are interested in to evaluate the p...