Had the same problems with my Hub 5.Had 2 replacements but still had problems, India told me my line was not compatible with the BT hubs!!, this has happened on the hub 3/4/and 5.
Now using a non BT hub, now have a rock solid connection.
Looked at that one, but not sure how to set it up properly, so stuck with the openreach modem.
The WAN settings I have for the ASUS DSL-N66U are as follows . . . .
WAN Transfer Mode
Transfer Mode = VDSL
Barrier = 0
Enable = Yes
IP Version = IPv4
WAN Connection Type=PPPoE
Enable UPnP = No
VLAN ID =101
IP Universal Settings
Get the WAN IP automatically?=Yes
Connect to DNS Server Automatically?=No (I use OpenDNS)
Connection type=Always On
TCP MSS Option=0
If you do decide to purchase this router, make sure you upgrade the firmware to 22.214.171.124 and perform a reset thereafter by holding down the reset button for 8 seconds.
Yeah my HH5 suddenly started rebooting last night around 11.30pm. Before that it never disconnected, I always had a rock solid connection, so I put last night down to perhaps a firmware upgrade to the HH5?
Trouble is I cant see anywhere in the HH5 settings where the FW version number is so cant confirm if it was a FW upgrade.
Login to the HH5 ,click troubleshooting, then helpdesk, you can see what firmware you are running and when it was last updated.
You can also see the vdsl line stats, noise margins, line rate.
Below is what a rubbish aluminium line on infinity looks like