问题
单项选择题
以下那个信令可以发起GPRS上行资源请求:()
A.Packet Downlink Ack/Nack
B.Packet Downlink Assignment
C.Packet Downlink Dummy Control
D.Packet Uplink Ack/Nack
答案
参考答案:A
以下那个信令可以发起GPRS上行资源请求:()
A.Packet Downlink Ack/Nack
B.Packet Downlink Assignment
C.Packet Downlink Dummy Control
D.Packet Uplink Ack/Nack
参考答案:A