Does the HH5a (PN Hub One) support G.Inp ?
I personally believe it does at least on DS.
This has been a very long standing and sometimes very heated topic, see many other threads on this and other forums and one I certainly won't be getting involved in.
With the very limited stat's extraction capabilities of the HH5a (PN Hub One) it's not possible to tell from these, the only definitive method would be to request a GEA test from PN, have seen quite a few recent requests on their forum which have been honoured by the staff members and the results attached.
Another factor to bear in mind is that it can take some considerable time for DLM to apply G.Inp to a new line, when I converted from ADSL to VDSL (with PN) in June this year it was just over 7 weeks before G.Inp activated, your circumstances may be different as you were already on a VDSL connection, can't be sure, others have had similar experiences while some have had G.Inp applied within days.
Edit:
Apologies, have just read the earlier posts in this thread, you are using a ZyXEL router/modem so obviously you will be able to tell if/when G.Inp is applied, I would certainly stick with the ZyXEL, I only used my PN Hub One for a few days during the ADSL/VDSL migration, used a Huawei HG612/Netgear combination after that and recentely changed to the ZyXEL 1312A in modem/router mode, very happy with this so far.