This read-only value, in microseconds, reports the local system's receive wake-time request as echoed back by the remote link partner, confirming the remote device correctly received the local system's requested receive parameter. An administrator uses this final echo value to complete the full round-trip verification of EEE parameter negotiation between the two devices. For example, comparing all the local and remote values together with their respective echoes lets the admin pinpoint exactly where, if anywhere, the EEE LLDP negotiation between two devices has gone out of sync.