You might want to search on OpenRG and PPP LCP on the Infinity Forum before deciding to get a HH5.
I left BT and had nothing but problems with them since January. now I've changed ISP I'm still using the HH5, same line and never had a problem with speeds, OpenRG or PPP LCP. The posts in the Infinity Forum will paint a picture for you.
IMHO it's obviously not the HH5 that is causing the problem but something BT are doing and they are being evasive and not at all honest about. So much so that they have banned several customers from the forum (all of whom I still have contact with regardless), myself included and closed down threads asking for answers an these issues.
My personal opinion after trying to work with BT on the issues for some 3 months and having it thrown back in my face to the point I left them, don't use the HH5 the only way I could stay connected from more than an hour was to use an unlocked Huawei HG612.
Edited by Busa (Sun 06-Apr-14 18:09:12)