You can't get line stats from the HomeHub. The modem controls the line and holds the stats. The modem is delivered locked and no stats visible. If it is an HG612 unlocking is easy, see http://huaweihg612hacking.wordpress.com/
and various threads on this site.
If an ECI one more difficult;
While things are settling in it is worth rebooting (or disconnecting/reconnecting) the HomeHub every now and then (typically each morning). Do NOT touch the modem if you can help it (other than to unlock). DLM controls the cabinet->modem sync speed, which in turn controls the IP profile at the exchange. The low level sync is automatic with not much you can do about it. The profile is only set at PPPoE connection between router and exchange. That often happens when the low level resync happens, but not always. In that case you get a 'stale' IP profile, which can limit your actual speed even when the sync speed has increase.
Moved (with trepidation turned relief) to BT Infinity 2 for upload speed. Happy BE user for several years.