This TS defines the stage 2 service description for a GSM/EDGE Radio Access Network (GERAN). It illustrates how the services requested by a GSM/UMTS Core Network are realized by the GERAN.
The main focus of this TS is on functionality related to the Iu interfaces. The aim of this TS is not to describe functionality related to the A and Gb interfaces in details. There is no detailed description of the interfaces towards the core network and only references are given to the appropriate specifications.