This is a CEx Coexistence Element to combine XGS-PON and GPON, traffic on to a single fiber. The CEx is rack mounted into a 1W LGX slot, with SC/UPC adapters for PON ports and SC/APC for the COM port. All of our coexistence elements are 100% compliant and provide a cost effective solution for your network upgrade needs. With our certification test program, we guarantee your product will work correctly the first time.