With the arrival of the thunderstorm season, it brings great security risks to the monitoring equipment, which may cause the loss of the monitoring picture or the instability of the picture, or lead to the breakdown of entire system.
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You must have the doubt what’s the function of the several ports in a switch. Then you need to know what the link types and port types are.
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Due to the maximum transmission distance of the network cable is 100 meters, it is necessary to use media converters or Ethernet repeaters for the long-distance transmission. The media converters are commonly used in network environments where Ethernet cables cannot be covered or the optical fiber must be used to extend the transmission distance.
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Power over Ethernet or PoE describes any of several standard or ad-hoc systems which pass electric power along with data on twisted pair Ethernet cabling. This allows a single cable to provide both data connection and electric power to devices such as wireless access points, IP cameras, and VoIP phones.
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The Internet is an inseparable part in people’s life nowadays, especially in the informatization of enterprise, in which it contains not only a completed office information system, but also builds a video surveillance system. However, due to the lack of an overall planning or the ill-considered selection of network products, it fails to deliver the desired result in network construction, and causes a lot of problems subsequently.
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