Nope, I believe it's supposed to be automatic and show up in the DSL info (for me currently 0), and would also show in DSLStats (which doesn't have the additional info present).
As I said, I'm fairly sure G.INP is no longer on as default on new Huawei cabinets, and to be fair, I'm not concerned about my connection as it does what I want from it... and I also don't want to take the OPs thread off-topic.