Description This is a NEW Cisco 4OC12X/SRP-XR-LC= 4 port OC-12c/STM-4c SRP ISE Line Card, 1550nm XR, LC 4OC12X/SRP-XR-LC= 4OC12XSRP-XR-LC_ 4OC12X/SRPXRLC=,4OC12X/SRP-XR-LC=
