单项选择题
以下信令中那个既包含上行接入请求的完整描述也包含手机的GPRS Multislot class:()
A.Packet Resource Request
B.Attach Request
C.Active PDP ContextRequest
D.Packet Uplink Ack/Nack
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单项选择题
A.Packet Resource Request
B.Attach Request
C.Active PDP ContextRequest
D.Packet Uplink Ack/Nack
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