Operator´s IT road to UMTS

Years have passed since first GSM networks were built. Although they used benefits of digital technologies, the need for mobility and transmitting voice calls as a primary function required clear separation between the way mobile networks and standard computer networks are functioning. As networks evolved and new standards emerged, this gap between mobile and standard computer networks became to fade. This article will try to show how evolving mobile network architectures lead to combining of two worlds-mobile and standard, fixed computer networks.