Background
The Power over Ethernet market continues to show strong growth potential and is forecast to reach $1.65 billion by 2025, growing at a CAGR of 16% during 2020-2025. What started off as an attempt to push out more speed and power off existing cabling, has created a whole new window of opportunity in power solutions. The ability to carry both data and power to IoT and 5G devices makes this relatively mature technology take on a whole new relevance.
PoE provides a technology that enables network cables to carry electrical power. This functionality allows a single cable to provide both a data connection and electrical power to devices, including: Wireless Access Points (WAPs), Internet Protocol (IP) cameras and Voice over Internet Protocol (VoIP) phones as well as a broad spectrum of IoT and 5G devices.
PoE uses several techniques for transmitting power over Ethernet cabling. Three of these procedures have been standardised by the Institute of Electrical and Electronics Engineers (IEEE) standard IEEE 802.3 since 2003:
- Alternative A (transports power on the same wires as data for 10 and 100 Mbit/s Ethernet variants – can transmit over 1000M)
- Alternative B (separates the data and the power conductors, making troubleshooting easier)
- 4PPoE (enables higher power for applications e.g Pan-Tilt-Zoom (PTZ) cameras, high-performance WAPs, or even charging laptop batteries)
Additionally, the IEEE PoE standards provide signaling between the power sourcing equipment (PSE) and powered device (PD). This signaling sanctions the presence of a conformant device to be detected by the power source and allows the device and source to work out the amount of power required/available.
Advantages
PoE holds many advantages including:
- The delivery of data and power over one Cat5e/Cat6 Ethernet cable
- Removes the requirement for additional AC/DC power supplies and outlets
- Low cost (remote installation costs less than fiber as no electrician is required and the ethernet cable is cost-effective)
- Safe to use
- Secure
- Quality is not compromised (ample power and data speeds are being improved on with each new standard)
- Extendibility
- Easy to install (PoE allows you to add a device in awkward or remote locations)
- Easy to monitor network
PoC
Power-over-Coax (PoC) is another technology that enables video, telemetry, and power to be carried over coaxial cable.
Commonly used in security cameras, PoC doesn’t require any specialist cabling and can work with industry-standard RG59 coaxial cables, thus allowing users with existing CCTV systems in their homes to upgrade cameras and records at a distance up to 200m without the use of any additional cables around their property.
Although this technology has not yet been standardised, it could offer a promising future if the application focus can be extended to the DOCSIS market. This is where PoC opens up the possibility for cable operators to deploy equipment such as WiFi extenders in their existing customer base.
Conclusion
To download our PoE datasheet, click here.
To find out more about our PoE products contact sales@netbit.com.
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