This read-only INTEGER attribute, actioned via the object's set semantics per its description, initiates or terminates a remote loopback with the OAM peer, startRemoteLoopback(2) tells the local client to send a loopback-enable OAMPDU to the peer, and stopRemoteLoopback(3) tells it to end the loopback. Remote loopback is a deliberately disruptive test that makes the peer echo all received frames back rather than forward them normally, so this is the control an engineer uses to run an end-to-end signal-quality test on a live circuit, at the cost of interrupting real traffic for its duration. A field technician verifying a newly-installed metro-Ethernet circuit before handing it to a customer would use this object to loop the far end and send test traffic to confirm the path is clean, undoing the loopback afterward with stopRemoteLoopback.