The International Telecommunication Union has given its seal of approval to HomePNA 3.1, an advanced home networking platform designed to deliver speeds over phone wires and coax cables at a theoretical high of 320 Mbps.
More specifically, the ITU has approved HPNA 3.1 as Recommendation G9954 (01/2007).
The ITU standardized the HPNA 3.0 spec in mid-2005. That version of the technology can support speeds up to 240 Mbps.
Although ITU standardizes technologies such as HPNA, it's up to Alliance members to develop, promote and certify the technology.