http://www.cisco.com/en/US/products/hw/phones/ps379/index.html
Nifty idea, mostly pushed by Cisco. The idea is that instead of wiring your buildings with Ethernet and phone, you just wire them with Ethernet and you use VoiceOverIP. So you have very nifty phones that plug into Ethernet and use DHCP, H.323 etc. Very nifty.
One page links to IPPhones:
