UE NodeB RNC SGSN NBAP: Radio Link Setup Request NBAP: Radio Link Setup Response AAL2SIG: ERQ AAL2SIG: ECF NBAP: Synchronization Indication RRC: Initial Direct Transfer (MM:…
UMTS Bearer Services Communication between the UE, RNC and circuit switched core network (CN) makes use of Uu interface protocol stack Iub interface protocol stack Iu-CS…