單項(xiàng)選擇題Which parameter is usedby GPRST unnelling protocol between GSNs to identify a PDP context？（）
A.NSAPI
B.TLLI
C.SAPI
D.TEID
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1.單項(xiàng)選擇題Which of following interface are not using CCS7 protocol？（）
A.Gn
B.Gd
C.Gs
D.Gr
2.單項(xiàng)選擇題When a mobile of B class is on the state of standby，what MM information is registered in SGSN？（）
A.LAI
B.CI
C.RAI
D.None
