Until the 1960s all telephone switching systems used electromechanical components and progressed from step-by-step to machine-driven to crossbar exchanges. The rapid and unprecedented advances in the 1960s and 1970s in computer technology and a phenomenal decline in costs of digital solid state electronic components led to the development and use first of the analog and then of the digital exchanges. Because of the rapidity of the advance of digital...
Voir la suite
INFORMATION
-
1981/01/31
-
Document de travail (série numérotée)
-
TWT3
-
1
-
1
-
2021/09/18
-
Disclosed
-
Application aspects of digital switching and transmission systems
-
digital switching
TÉLÉCHARGER
RAPPORT COMPLET
Version officielle du document (peut inclure des signatures etc…)
-
Total Downloads** : 74
*La version texte est une version à reconnaissance optique de caractères non-corrigée. Cette version est fournie uniquement pour accommoder les utilisateurs disposant de connections lentes.