3 Abbreviations

29.1083GPPApplication of the Radio Access Network Application Part (RANAP) on the E-interfaceRelease 17TS

For the purposes of the present document, the abbreviations defined in TR 21.905 [1] and the following apply:

3G_MSC A third generation Mobile services Switching Centre that supports the Iu interface (and possibly also the A-interface)

3G_MSC-A The controlling 3G_MSC on which the call was originally established

3G_MSC-B The 3G_MSC to which the UE is handed over in a Basic Handover

3G_MSC-B’ The 3G_MSC to which the UE is handed over in a Subsequent Handover

3G_MSC-I Interworking 3G_MSC

3G_MSC-T Target 3G_MSC

EP Elementary Procedure

NNSF NAS Node Selection Function

RNC Radio Network Controller