Hi friend.
You can ask questions on Huawei Weiknow to obtain the information you want.
Click the Weiknow link, select Optical Transmission&Access in the Product Catalog area, select MDU, and then ask the question shown in the following figure.
The following figure shows how to obtain the MA5612 documentation.

If you cannot open the documentation link, you may not have sufficient permissions. You can use the following link to upgrade your account permissions.
How do we upgrade our account
Thanks.