Power over Link™ / Power over Ethernet (PoL/PoE). Power over Link™ (PoL™) means power and data are transported over a single pair of wires, between two locations.
Ethernet networks are the transport mechanism for Internet Protocol (IP) communications. Although Ethernet has been around since 1973 when the original concept was tested at Xerox's Palo Alto Labs.
The α (Alpha)-Ring protocol was designed and developed by EtherWAN to overcome traditional STP and RSTP's inability to provide fast network recovery in minimizing packet loss caused by link failure.