In this video we discuss three topics: The Mobile Phone and Subscriber Identity Module, The UMTS Radio Access Network and, Supporting Voice with the Circuit Switched Core Network. This video is taken from our UMTS System Engineering course, which explains the key principles behind 3G network technology. In so doing it provides a detailed analysis of the key signalling procedures in terms of call setup, data transfer and mobility. Find out more about this course here: https://www.mpirical.com/courses/umts-system-engineering If you are interested in 3G technology: https://www.mpirical.com/technology/3g-umts-hspa-training Search all of our 3G courses: https://www.mpirical.com/courses?technology=3g