多选题 : 在NSA組网中,以下哪些消息中携带的原因值可以用于掉话原因的分析?
(A)SCG Failure Info
(B)SgnodebReleaseRequired
(C)SgnodebReleaseRequest
(D)Sgnodeb Release Ack
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(A)SCG Failure Info
(B)SgnodebReleaseRequired
(C)SgnodebReleaseRequest
(D)Sgnodeb Release Ack