[单项选择题] After GPRS attach，SGSN will assign an identity to identify the MS，what’s it？（）
A.TMSI
B.P-TMSI
C.TLLI
D.IMSI
正确答案：B
![[单项选择题] After GPRS attach，SGSN will assign an identity to identify the MS，what’s it？（）](http://www.mshxw.com/aiimages/31/503391.png "[单项选择题] After GPRS attach，SGSN will assign an identity to identify the MS，what’s it？（）")
[单项选择题] After GPRS attach，SGSN will assign an identity to identify the MS，what’s it？（）
A.TMSI
B.P-TMSI
C.TLLI
D.IMSI
正确答案：B
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