What is the difference between COR and ROR

A COR is a Central Outdoor Router, and is used as point to multipoint or point to point. it can have multiple client connections with ORC clients, or multiple point to point bridges with ROR slaves. An ROR is a Remote Outdoor Router and is for point to point bridging only, and can either be a master to another ROR slave, or a slave to an ROR, or COR. And only supports one connection at a time. Note that a COR cannot bridge to another COR unless the remote unit’s radio interface is configured as an ROR (slave). Also note that both units have the ability to act as 802.11 access points.