An Ethernet Extender lets users expand Ethernet connections beyond typical 328-foot ethernet distance limitations. It can establish high-speed, long-range data communication between geographically separated LANs, and is often used for connecting workgroups on separate floors. A cost-effective alternative to complicated and pricey wiring installations like CAT5 and cable, the Ethernet Extender is a plug-and-play device that can be installed quickly with existing copper twisted-pair network infrastructure. Some models can increase the distance of an ethernet link beyond five miles.
One benefit is the elimination of the necessity for expensive switches and CAT5 cable. The Ethernet Extender uses fiber-optic or copper twisted-pair cables to transparently send packets to a peeredLAN up to five miles away at full-line rate. While networks usually deploy the Ethernet Extender within a limited area, it doesn’t have to be limited to one building. The Extender can create connections across streets or over a college or campus and between Ethernet LANs up to five miles apart. Transmitting over copper wire may not permit fiber-optic speeds, but it allows the use of existing wiring. Copper-based extenders need to be used on unconditioned wire, including unused twisted pairs and alarm circuits.
A technology unrelated to PoE, Ethernet over power lines enables ordinary electric power lines to act as long-distance Ethernet network links. Ethernet Over Power is more commonly known as Mains Networking, whereby the existing mains power cabling in a property can be utilised (by means of special adapters) as an ethernet network.
Several manufacturers are now using branding such as Powerline or Homeplug to encompass these solutions.
You will need at least two of these Mains Networking adapters. One used adjacent to the router or switch, and the other positioned adjacent to the device which you wish to reach and add to your network.
These adaptors typically take the form of a mains plug styled unit with a connector socket for an RJ45 plug to enable you to connect your network.
Mains networking is a good option for situations where it is difficult to extend your network to reach the new location, but where mains sockets fed from the same area as your main network already exist – outbuildings such as garages or garden offices are a good example.
NB in industrial 3-phase applications you need to be sure that both sockets used are on the same electrical phase.
Mains networking is also good for applications where it proves difficult to achieve consistent wireless network performance e.g. homes with thick walls or too many walls between the two locations, or even in castles or stately homes where the walls may simply be too thick for consistent wireless transmission.