How to set up your own DSL access equipment and AT&T's approved modems

As I spent a long time looking for specs on AT&T's DSL service and how to set up a gateway (modem) for it.

November 2013 - here's the link - http://www.att.com/support_media/images/pdf/hsi/ATT_HSI_Self-Installation_Guide_All.pdf.

Here is a list of the gateways (modems) that AT&T supplies:

http://www.att.com/equipment/accessories/gateways-modems.jsp

You probably have ADSL2+ or ADSL2 - at least it's some ADSL  - as far as I can see we don't have IDSL any more, though once had it and some may have had SDSL. http://dsl.bus.att.com/pdf/expectation.pdf