DESC: Radiance Access Line Cards provide the ability to reach across a metropolitan area network to communicate, test and reconfigure an unmanaged remote device, without reducing the available bandwidth to the customer site. Radiance Access Line Cards provide the highest level of manage- ability-including dynamic bandwidth provisioning, remote loopback testing, and real-time analog and RMON statistics. The Access Line Card gathers real-time data to provide critical, up-to-the-minute Quality of Line information on an Ethernet fiber link including optical receive power level measurement, optical transmit power level measurement, and Radiance voltage and temperature measurements.