Metrics at the higher network layers may identify that a problem exists, but they cannot quickly isolate the location of an optical fiber fault, nor can they automatically trigger the immediate dispatch of repair technicians. An efficient, fast, Physical Layer monitoring approach has long been needed that can instantaneously identify, locate, and report (via SNMP) any optical fiber cuts, breaks, or other faults (as well as any open, damaged, or dirty optical connectors) in the optical fiber cable plant. iSFC Transceiver technology is now available to accomplish this. It is backward compatible with legacy access networks, and also forward compatible with new DWDM, 10/40/100G networks as an optical supervisory channel (OSC) transceiver with integrated OTDR. iSFC Transceiver can easily be integrated into the SNMP monitoring of existing switch/router equipment with minimal software/firmware upgrades.