Attach Request消息可包含在如下哪条信令过程中？（)

A.UpdateLocationReq

B.UpdateLocationAck

C.CreateSessionReq

D.AttachRequest

A.INVITE

B.100 Tring

C.180 Ringing

D.200 OK

E.ACK

A.attachrequest

B.createbearerrequest

C.initialUEcontextsetup

D.authenticationrequest

A.S1C Address

B.S11 Address

C.IMSI

D.IMEI

A.AttachRequest

B.CreatedefaultbearerRequest

C.ActivateDefaultEPSBearerContextRequest

D.UpdateLocationRequest

A.RRCConnectionReconfiguration

B.Attachacceptcomplete

C.RRCConnectionSetup

D.MeasurementReport

A.TDM信令链路负荷

B.IP信令业务负荷

C.H.248消息错误率

D.每线话务量

E.RTP丢包率

A.信令链路消息处理(SLMH)

B.信令链路管理(SLM)

C.消息缓存和选路(BAR)

D.信令网业务管理(SNTM)

A.空

B.A

C.Gb

D.Abis

A.填充信令单元

B.链路状态信令单元

C.消息信令单元