HP Procurve - Power Over Ethernet (PoE)
IP Telephones require electrical power to work. There are 2 ways of delivering
power to IP telephones, they are as follows:
A local power supply (power brick) connecting the IP telephone to an electrical
socket
or providing power via a CAT5 socket to the IP telephone over the Local
Area Network (LAN / Ethernet).
The term used to describe the later option is called Power Over Ethernet (PoE).
Power Over Ethernet technology allows devices such as IP telephones, wireless
LAN access points and other embedded computer appliances to receive power
as well as data over existing CAT5 cabling. This is a more flexible option
as it reduces the number of power sockets required within the organisation
to support ICT (Information and Communications Technology) power requirements.
PoE has been established as an IEEE standard and offers new options to
system manager by providing economical and flexible deployment of networked
devices. As PoE enables the IP telephones to receive power via a CAT5
port you simply disconnect the IP phone move to the new location connect
to the CAT5 socket and it will power up automatically and start working.
If using "dual port" telephones a PC can be plugged into the
back of the IP telephone to access the LAN.
Britannic Technologies work with HP ProCurve a world leading networking
manufacturer to provide a range of Power over Ethernet hubs and switches.
In addition standard UPS technology can be applied to Power over Ethernet
hubs and switches to provide power-fail operation to Power over Ethernet
devices from a central point.
