Figure 1 shows the smooth evolution from the GPON network to the 10G GPON network by adding the WDM1r wavelength division multiplexing (WDM) equipment.

Figure 2 shows the smooth evolution from the GPON network to the 10G GPON network by adding the GPON & 10G GPON combo service board.

Combo PON Service Board:

Huawei GPON and XG-PON combo PON service board：CGID，CGUD，CGHD，CGHF，CGUF

Huawei GPON and 10G GPON combo PON service board：CSHF，CSHD