Cisco ONS transceivers can be used to build and augment DWDM (Dense Wavelength Division Multiplexing) networks. The Cisco ONS transceivers deliver simple functionality which is easy to install and maintain because of low power consumption. These help enable huge bandwidth between data centers, while introducing minimal operational complexity and almost nil latency. The CWDM and DWDM SFP transceivers can be used as Cisco ONS transceivers and provide seamless network connectivity without rebooting the system. DWDM GBIC transceiver modules from Cozlink are pluggable optical modules that can be used for Cisco ONS solutions. Apart from SFP and GBIC, XFP, QSFP+, SFP+ and CFP transceivers are also applicable and replaceable with Cisco ONS transceivers. All these products are MSA approved and environment-friendly. These can operate at extendable temperature range and require nominal input wavelength. Depending upon the Ethernet standards complied, the Cisco ONS transceivers can be used for long range and short range networks.