Hi!
This ONT is not used by Enterprise customers, so I cannot find the exact guide for you.
Below just for reference, maybe it will be helpful to you.
WAN Configuration - bridge<ol>
In the navigation tree on the left, choose WAN > WAN Configuration. In the pane on the right, click New. In the dialog box that is displayed, set Mode to Bridge WAN, as shown in Figure 3-18.
Table 3-4 describes the parameters related to the WAN in bridge mode.
Used to bind the WAN interface to the LAN port or to the wireless SSID.
NOTE:
Before setting the binding options, set the work mode of the LAN port to route or set the wireless SSID. The binding options can be set only after the work mode or wireless SSID is successfully set.
3.4.1 LAN Port Work Mode and WLAN Basic Configuration.
[/td][/tr][tr][td=1,1,25%]Multicast VLAN ID
[/td][td=1,1,74%]The multicast VLAN ID ranges from 1 to 4094.
The multicast VLAN ID must be the same as the multicast VLAN ID on the OLT.
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NOTES:WAN in route mode: The ONT functions as a gateway. The IP address of the ONT can be obtained via DHCP, Static, or PPPoE. The IP address of the PC connected to the ONT can be obtained from the DHCP address pool of the ONT or can be set manually.
WAN in bridge mode: The ONT functions as a relay and does not process data. The ONT does not obtain the IP address allocated by the upper-layer device and it does not allow the manual configuration of a static IP address. The IP address of the device connected to the ONT can be obtained via DHCP, PPPoE, or static.
In the case of the DHCP mode, you need to set the DHCP relay. After configuration is complete, the user-side IP address is obtained from the upper-layer device. For the detailed procedure, see 3.4.3 DHCP Server Configuration.
In the case of the PPPoE mode, the user-side IP address is obtained through PPPoE authentication of the upper-layer device.