Remote outdoor router, or ROR in short form, is a device that connects a remote location in a WLAN

Wireless LAN

A wireless local area network links two or more devices using some wireless distribution method , and usually providing a connection through an access point to the wider internet. This gives users the mobility to move around within a local coverage area and still be connected to the network...

 to either another remote location with an ROR for a point-to-point connection or to the system's COR

Central Outdoor Router

Central Outdoor Router, or COR in short form, is the central router in a multi-device WLAN. The device is typically placed in a geographic central location and communicates with up remote locations that use an remote outdoor router ....

for point-to-multipoint connections. The ROR can connect to only one other unit at one time - either another ROR or the COR. The COR can connect to multiple RORs.