多项选择题
L2TP建立会话时使用的消息有()
A.SCCRQ(Session-Control-Connecting-Request)
B.SCCRP(Session-Control-Connecting-Reply)
C.ICRQ(Incoming-Call-Request)
D.ICRP(Incoming-Call-Reply)
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多项选择题
A.SCCRQ(Session-Control-Connecting-Request)
B.SCCRP(Session-Control-Connecting-Reply)
C.ICRQ(Incoming-Call-Request)
D.ICRP(Incoming-Call-Reply)
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