The HPNA (Home Phoneline Networking Alliance) is an industry group that promotes standards for using existing phone lines and jacks to interconnect computers within a home. The HPNA's HomePNA standard is one of several leading technologies for home network.
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HPNA's approach is one of several competing home networking approaches. Others include Ethernet, the powerline protocol, or the Bluetooth standard. Ethernet is a widely-used standard for a local area nework (LAN) that requires each computer to be equipped with an interface card and the installation of thicker cabling. Powerline is a slower data transmission method that uses the home's electrical wiring. Bluetooth uses wireless technology to transmit data between devices within a 30-foot range. In addition to HomePNA, there are other proprietary approaches to home networks using existing phone lines.
The Home Phoneline Networking Alliance is a consortium with over 100 members, including 3Com, AT&T Wireless, IBM, Intel, Compaq, Lucent Technologies, and Hewlett-Packard.