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Reply To: What is BSIC?


Hi Nguyen,
Take a look at GSM specs 03.09 ( inter-MSC handover), 09.02 (MAP), 09.10 (MAP). There should be an E-interface between MSCs for inter-PLMN handover. According to specs inter-PLMN handover doesn’t differ from ordinary inter-MSC handover. Thus handover happens first then MS makes LU.