Which of the following components is typically used for voice transmissions and has a 10Mbpsmaximum transfer speed?（）A、110 blockB、Patch panelC、Vertical cross connectD、66 block
Which of the following components is typically used for voice transmissions and has a 10Mbpsmaximum transfer speed?（）
- A、110 block
- B、Patch panel
- C、Vertical cross connect
- D、66 block
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