Digitalization of transmission and switching

In the 1980s, the emergence of new technologies such as microprocessors and circuits with a high degree of integration (LSI) led to important changes such as the incorporation of processors in switchboards and digital transmission mechanisms, and also to the need to transport voice, data and images, which had an impact on the design of networks.

These technologies had a positive influence on the design of telephone networks, contributing to their evolution, being able to offer a new world of services to society, such as digitalization and the incorporation of ISDN, as well as a door to facilitate their growth, evolution and new advantages to users.

One of the pillars on which Telefónica relied for this objective was the deployment of Alcatel’s System 12 and Ericsson’s AXE-10 system, which are detailed in these notebooks.