BT HH's are garbage. I have a TP-Link router and it's far better than the HH5 for WIFI range and speed. Also can better configure my LAN than a HH5 ever will.
Still got issues with the odd disconnect which is also happening at my girlfriends place. same error in router log at both addresses:
As soon as a unlimited 4G dongle ccomes on the market, bye bye landline & broadband ;