You can do SDSL over a dry pair, but you can't use CPE (customer premise equipment) like the Netopia 7200 on both ends. You either need a DSLAM on one end and CPE on the other, or a modem that's made to work on both ends.
Here's one such modem (PairGain):
http://www6.adc.com/ecom/hier?NODE=OND29287
Zyxel makes one too, the Prestige 681 (link too long to bother with)