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Introduction:

HSCSD is circuit-switched and hardly any operator decided to implement it. This subclause will provide you with an overview of HSCSD. It will describe its principles and performance and it will explain why HSCSD is the simplest high speed data upgrade for GSM.

Feel free to follow our sequence by using the menu bar at the bottom of the screen or make your own selection.


In order to gain an overview of the topics discussed in this subclause you will need roughly 1 hour. You will obtain enough information for a basic understanding of HSCSD.

Not applicable

This subclause is not essential for obtaining the participation certificate.