题目内容
(请给出正确答案)
[主观题]
Which of these different “dropped call rates” gives a “subscriber perceived” drop rate
?()
A.Dropped TCH connections of the total number of TCH connections
B.Dropped calls of the total number of calls terminated in the cell
C.Erlang minutes per dropped TCH connection
D.Average call drops experienced during one hour talk time
E.All of these
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