單項(xiàng)選擇題

AT接入鑒權(quán)的時(shí)候,包括
(1)ChApchAllenge-response,
(2)A12Acessrequest,
(3)A12AcessAccept,
(4)chApAuthentificAtionsuccess,信令流程正確的順序是:()

A.1-2-3-4
B.1-3-2-4
C.2-1-3-4
D.2-3-1-4

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