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In professional network installations, Power-over-Ethernet (PoE) is often used as a way to save unnecessary power supplies for connected IP devices. It is not always possible to set up a power supply near the device to be powered, and it therefore saves both installation and service when power is exclusively fed as low-voltage and from a central location in the installation.
Power over Ethernet is used for, among other things, the following equipment:
• IP CC cameras
• Wi-Fi access points
• IP telephones
• Entry phones
• Control panels in professional AV installations
For supplying PoE devices, either a simple PoE power supply or a network switch with POE is used, i.e. this equipment can add power to the network cable and thus the network cable becomes the only thing to be routed out to the camera, control panel or the like.
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Power over Ethernet (PoE, EEE 802.3af-2003) is a cleber standard to supply ethernet connected devices, with power up to 15,4 Watt per PoE network switch port. The supply voltage are transmitted within the same ethernet cables as the data stream, and thereby only one CAT cable is needed, for e.g. IP cameras, Wi-Fi access points, door stations etc. The PoE standarden has been further developed into the PoE Plus/+ version (IEEE 802.3at-2009), which can delivery up to 25,5 Watt pr. connection, and are often utilized for HD network IP cameras.
We recommends minimum Category 6 or 6A ethernet cables for a stable connection of PoE network equipment. |
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HI-FI STEREO
