A.Cell Selection
B.Attach
C.PDP Context Activation
D.RA update

A.Cell
B.RA
C.LA
D.PLMN

A.GGSN
B.PCU
C.SGSN
D.DNS

A.Class A
B.Class B
C.Class C
D.Class D

A.空分复用
B.时分复用
C.码分复用
D.不复用

A.Ga
B.Gb
C.Gc
D.Gn

A.LA
B.Cell
C.RA
D.PLMN

A.BSSGP
B.TCAP
C.GTP
D.RIP

A.RIP
B.GRE
C.OSPF
D.静态路由协议

A.GRE
B.GTP
C.SCCP
D.L2TP

A.Call Detail Record
B.Call Data Record
C.Cell Data Record
D.Cell Delete Record