[单项选择题] SGSN gets GGSN’s IP address by communicating to () when a MS makes PDP c
2021-07-16
[单项选择题] SGSN gets GGSN’s IP address by communicating to () when a MS makes PDP context activation.
A.PAPU
B.HLR
C.MS
D.DNS
正确答案:D
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