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当前学科:GPRS网络规划优化
题目:
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手机可以附着到GPRS网络上,但是无法激活PDP上下文,则可能的原因为()。
A . MSC出故障
B . OMCG无法正常工作
C . GGSN接口硬件损坏
D . CG与SGSN连接中断
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