Power over Ethernet has become one of those checklist items many enterprises rely on to bring electricity over existing data cables to Wi-Fi access points, firewalls, IP phones and other infrastructure throughout their networks.
PoE’s use has grown substantially since the IEEE standardized it in 2003, and its use will only increase in the coming years as new applications develop. In fact, the Dell’Oro group says that PoE port shipments will total over 624 million over the next five years.
“There are a number of drivers for the current PoE technology. For example, if you look at WLAN [wireless LAN] access points, you have increased number of [wireless-spectrum] bands and higher speeds which require higher power,” said Sameh Boujelbene, Senior Research Director for Ethernet Switch market research at Dell’Oro. “The new generation of IP phones is adding telepresence features. If you look at surveillance cameras, you have zooming features, you have added analytics. All these new features require higher power.”
Thanks to Michael Cooney (see source)