said by NormanS:Can't say I have ever heard of 8-pair bonding
I have (in the IDSL world.) It's just 8 times as much to go wrong. If one is as such a distance that ADSL will only work at less than 1mbps, putting *8* ADSL lines next to each other -- even if AT&T runs individual lines from the box, they'll be riding the same 25pair (or bigger) trunk -- is only going to make it worse.
Bonding has to be done at both ends of the loop. Unless AT&T will do it at the DSLAM, it won't be done. Can't be done with software on your end.
There are "vpn" tricks to push the bonding further up than the ISP gear; I'd recommend avoiding such things. Anyone who's dealt with AT&T (or read this forum) already knows a) AT&T isn't going to do bonding on an ADSL line, and b) absolutely will not allow ANYONE to have more than one line at a single physical address.
(Uverse "pair bonding" is not something you can order. It's something they do to get you the necessary speed for TV services. And they don't do it for ADSL2+ "IP DSLAM" lines -- at least, I've never heard of it being done.)