A pair of Patton 2173 Ethernet Extenders work together to create a transparent extension between two peered Ethernet LANs. The figure above shows a typical point-to-point application.
The Patton 2173 is a Multi Rate 100 Mbps Ethernet Extender Kit with 2 units preset to local and remote. They come with 110-240VAC power supplies.
These have been replaced by the Patton CL1214