Hey!
In Huawei's equipment, the EOS board can transfer the packet service to SDH. For example, EMS6, EFS4 and so on.
There are many EOS boards. You can select the one which suits you.
For example, create E1 services on the OptiX OSN 550:
https://support.huawei.com/hedex/hdx.do?docid=EDOC1100020960&id=tc_osn_pd_0281&lang=en
Thank you!