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What is one of the differences between the phase 1 and phase 2 establishment causes? (
A.Phase 2 establishment causes distinguish between answer to paging and call re-establishment
B.Phase 2 establishment causes distinguish between MS originated call and answer to paging
C.Phase 2 establishment causes distinguish between location updating and answer to paging
D.Phase 2 establishment causes distinguish between MS originated calls and SMS
E.Phase 2 establishment causes distinguish between call re-establishment and SMS
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