AT&T U-Verse hasn't officially announced they have a carriage agreement with Pac-12 networks. As of today PAC-12 networks is showing up on my U-Verse online program guide and Titan TV's program guide.

http://uverseonline.att.net/guide

on uverseonline enter your zipcode

on titantv:

http://titantv.com/

choose digital cable and at&t uverse channel lineup should show up

the uverse and titan tv screenshots were taken @ 6:12PM PST

Pac-12 networks will be on HD on 1759, 1760, and 1761
SD channels will be on 759, 760, 761.

HD:

via i.imgur.com

SD:

via i.imgur.com

PREPARE.

via i.imgur.com