Rapporteur: Dr. Belling, Thomas Antecedent:
This TS provides an overview of the architecture and issues related to the provision of Circuit Switched Bearer Services in a 3G mobile network (UMTS) operating in UTRAN or GERAN Iu mode. Handover to GERAN
A/Gb mode is also considered.
Note: The Gb interface does not play any role in the scope of the present document although the term "A/Gb
mode" is used.