Home Networking Guide : Phoneline Networking
Figure: HomePNA-based Home Network
Each computer is connected to a phone jack via a HPNA adapter.
A telephone set can still be installed side-by-side with a computer
Power jacks and power cables are not shown in the diagram for simplicity.
Phoneline networking is about running a network over phoneline.
Home phoneline networking follows HomePNA standard. HomePNA uses
existing home phonelines to make a network of computers and other
devices. Each computer must be equipped with internal HomePNA
or connected to an external HPNA adapter. You can find several
types of HPNA adapters in the market, namely PCI adapter for
connection to a PCI expansion slot inside a desktop PC, USB
adapter for connection to a USB port, and PCMCIA (PC Card) adapter
Most HPNA adapters provide two RJ-11 connectors, one is intended for
connection to a wall phone jack, the other for connection to a
phoneline device (i.e. telephone, fax machine, answering machine,
caller ID box). The connector for connecting a phoneline device is called
pass-through connector. If your HPNA adapter doesn't have a
pass-through connector, you can use a Y-connector (phone
splitter) to split the
wall phone jack into two or more RJ-11 connectors, one for the adapter, the
telephone or other phoneline devices. The home phone wiring functions as a connecting medium,
therefore a hub is not needed in a HomePNA network.