No, I haven't. Infinity is nothing to do with BT Openreach it's a product from BT Retail which is using a resold product from BT Wholesale which in turn is using a product from BT Openreach.
Are you referring to a spec sheet from Openreach or one from Wholesale?
Or are you referring to the modified FTR values which are irrelevant anyway as they only cover the Openreach segment of the connection?
OK I see - you're referring to Openreach guaranteeing 30Mb on the 80Mb product.
http://www.openreach.co.uk/orpg/home...es/nga03211.do