XGS-PON and XG-PON both belong to GPON series. XGS-PON is the technological evolution of GPON and XG-PON, supporting the mixed access of GPON, XG-PON and XGS-PON ONU. XG-PON and XGS-PON are both 10G PON. The main difference is that XG-PON is an asymmetric PON, and the uplink/downlink rate of the PON port is 2.5G/10G; XGS-PON is a symmetric PON, and the uplink/downlink rate of the PON port is 10G/10G. Since the uplink/downlink wavelengths are different from GPON, XGS-PON uses the Combo solutions to share ODN with GPON. AscentOptics can provide XG-SPON OLT SFP+and XFP transceivers (N1, N2 and E1 according to ODN Class) for XGSPON OLT devices and XGSPON&GPON Combo OLT SFP+ transceivers (B+/N1, C+/N2, B+/D1, C+/D2 according to ODN Class) that support mixed access of GPON, XG-PON and XGS-PON ONUs. We can also provide XGSPON ONU SFP+ transceivers for XGSPON ONU devices.