What will cause wireless voice devices to perform poorly？（）A、average signal strength that is greater than -67 dBiB、cell overlap of 15 to 20 percentC、uneven wireless coverageD、absence of coverage holes
What will cause wireless voice devices to perform poorly？（）
- A、average signal strength that is greater than -67 dBi
- B、cell overlap of 15 to 20 percent
- C、uneven wireless coverage
- D、absence of coverage holes
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