The Cisco Dense Wavelength-Division Multiplexing (DWDM) Gigabit Interface Converter (GBIC) pluggables allow enterprise companies and service providers to provide scalable and easy-to-deploy Gigabit Ethernet services in their networks.PRODUCT FEATURES:Support ITU 100-GHz wavelength grid;Matches wavelength plan of Cisco 100-GHz ONS product family;Fixed wavelength GBICs, with 32 different GBIC models;Hot-swappable input/output device that plugs into Gigabit Ethernet GBIC ports or slots of a Cisco switch or router, linking the port with the network;Cisco DWDM GBICs can be used and interchanged on a wide variety of Cisco products and can be intermixed in combinations of 1000BASE-SX, 1000BASE-LX/LH, or 1000BASE-ZX on a port-by-port basis.