EXFO America Inc. FTB-8120NG 2.5Gb/s Next-Generation Transport Blazer Test ModuleOptical Interface: Optical reach will be determined by selected transceivers. - SFP Transceiver must be specified.Optical Rates (ENABLED by Default):OC-3/STM-1, OC-12/STM-4, OC-48/STM-16155Mb/s