Most desktop offer limited clean UPS power supply, but may in the case of power switching delays in the process, which could interrupt is sensitive to time delay of VoIP traffic flow, in addition, for those who have their own generators, such as hospitals, schools and public safety facilities, UPS factor need to consider more, and in extreme cases, such as in the use of Ethernet switch, which may lead to packet loss, on VoIP equipment, which can also lead to noise and interference, switches will be able to provide better power management and distribution functions,
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