单选题What formula do you use to calculate the number of Voice Gateway ports? （）AErlang A BErlang B CErlang C DIVR ports + agent phones
单选题
What formula do you use to calculate the number of Voice Gateway ports? （）
A
Erlang A
B
Erlang B
C
Erlang C
D
IVR ports + agent phones
参考解析
解析：
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