1. The demand for more data traffic and faster data speeds has led to advancements in communication technology, resulting in larger data centers and more complex cabling systems. One emerging technology that has gained significant attention is Power over Ethernet (PoE). Are you familiar with PoE and its applications? This article will delve into the details of PoE and its relevance in today's network deployments.
2. PoE technology enables network switches to transmit both power and data simultaneously through an Ethernet cable. For instance, consider a digital security camera that typically requires separate connections for network communication and power supply. However, if the camera is PoE-enabled, it can receive both power and data through a single Ethernet cable. This simplifies the installation process and eliminates the need for additional power connections. PoE is commonly used in various home network devices such as VoIP phones, IP cameras, and wireless access points.
3. If you have used PoE devices, you may have come across PoE+ devices in the market. What sets them apart? PoE devices adhere to the original PoE standard, IEEE 802.3af, which provides up to 15.4W of DC power to each device. On the other hand, PoE+, also known as PoE class 4, follows the latest standard, IEEE 802.3at, and can deliver up to 30W of power to each device. This means that PoE+ can provide nearly double the power compared to PoE over a single Ethernet cable. High-powered IP devices like PTZ cameras often utilize PoE+ for their power requirements. Additionally, compatible NVRs (Network Video Recorders) use integrated PoE+ ports to provide power, PTZ commands, and video connections to the cameras. One of the advantages of PoE is its reliability, as it relies on a central and universally compatible power source, which can be further supported by an uninterruptible power supply.
