Hello, friend.
The DSL home gateway supports two upstream connection modes: DSL and Ethernet. Choose suitable access based on requirements. Connect your devices in the sequence indicated in the following figure:

NOTE:
Only DSL upstream transmission or Ethernet upstream transmission can be used at a time.
When configuring the DSL home gateway for the first time, use an Ethernet cable to connect the DSL home gateway to a computer.
For more information on the device DN8245W-10, please click:
Huawei DN8245W-10 - an informative product review
Thanks.