單項選擇題CDUtypesusedwithRBS2207()

A.CDU A and CDU G
B.CDU F and CDU G
C.CDU A and CDU C
D.CDU F and CDU C+


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1.單項選擇題CDMA中283頻點的中心頻率是()

A.833.49MHz
B.832.26MHz
C.833.51MHz
D.823.49MHz

2.單項選擇題CDMA占用的載頻上行和下行各為()

A.825MHz-835MHz 870MHz-880MHz
B.815MHz-825MHz 860MHz-870MHz
C.815MHz-825MHz 870MHz-880MHz
D.825MHz-835MHz 860MHz-870MHz

3.單項選擇題CDMA語音業(yè)務信道編碼一般采用()

A.TURBO編碼
B.香農編碼
C.卷積編碼
D.SBC子帶編碼

4.單項選擇題CDMA語音信令流程正確的是()

A.originationmessage→BSACK→TCHpreamble→Channelassignmentmessage→BSACK→MSACK→ServiceConnectmessage→Serviceconnectcompletion→assignmentcomplete
B.originationmessage→BSACK→ServiceConnectmessage→TCHpreamble→BSACK→MSACK→Channelassignmentmessage→Serviceconnectcompletion→assignmentcomplete
C.originationmessage→BSACK→Channelassignmentmessage→TCHpreamble→BSACK→MSACK→ServiceConnectmessage→Serviceconnectcompletion→assignmentcomplete
D.OriginationMessage→CMServiceRequest→TchPreamble→Establish→AssignmentComplete→Allocation;

5.單項選擇題CDMA用戶跨過BSC邊界并完成切換,這個切換是()

A.軟切換
B.硬切換
C.不一定