I applied through an employee referral. The process took 3 months. I interviewed at AT&T in Jun 2009
Interview
1st phase - presentation of the company and position, assessments on technical skills and English language proficiency (my native language is Portuguese).
2nd phase - group interview with embedded personality test.
3rd phase - face-to-face interview led by 2 supervisors. Visit to the work place.
4th phase - background check.