The Cisco ONS 15530 2.5 Gbps ITU Trunk Card provides the Cisco ONS 15530 DWDM Multiservice Aggregation Platform with a 2.5 Gbps trunk option for aggregating multiple enterprise system connection (ESCON), Fiber Channel, fiber connectivity (FICON), and Gigabit Ethernet services over a single ITU (International Telecommunication Union) wavelength.The nonsplitter version has only one pair of optical connectors on the front panel, which connects to either the east or the west OADM module, and can be used for unprotected, line card protected, or switch fabric protected applications.