FluxLight's SFP-OC3-LR1 is a CiscoÃÂî compatible OC-3 SFP Optical Transceiver and is factory preprogrammed with all the necessary configuration data for seamless network integration. Our transceivers perform identically to CiscoÃÂî original transceivers and are 100% compatible with other OEM and third party transceivers. The SFP-OC3-LR1 is 100% MSA (Multi-Source Agreement) compliant. All FluxLight's transceivers are tested for 100% functionality and guaranteed compatible for outstanding network performance.FluxLight offers all brands and form factors of Optical Transceivers for all your networking needs. Now you have a reliable, compatible and affordable means to expand your network while maintaining its integrity.SFP-OC3-LR1 QUICK SPEC:Mfg. Compatibility: CiscoÃÂîPart Number: SFP-OC3-LR1Form Factor: SFPTX Wavelength: 1310nmReach: 40kmCable Type: singlemode fiberRate Category: OC-3Interface Type: LR1DDM: YesConnector Type: Dual-LC