A.MSC B.HLR C.VLR D.AuC
A.A11消息-注冊(cè)請(qǐng)求應(yīng)答 B.A11消息-注冊(cè)更新 C.A11消息-注冊(cè)請(qǐng)求 D.A11消息-更新消息應(yīng)答