EPON OLT is a high integration and medium capacity cassette EPON OLT designed for operators’access and enterprise campus network. It follows the IEEE802.3 ah technical standards and meets the EPON OLT equipment requirements of YD/T 1945-2006 Technical requirements for access network——based on Ethernet Passive Optical Network (EPON) and China telecom EPON technical requirements 3.0.