AT&T Inc., the largest US phone company, joined the faltering US economyÔÇÖs procession of layoffs by announcing on Thursday its plan to cut 12,000 jobs in an effort to trim expenses. ┬á┬á The company plans to record $600 million in expenses for severance packages, with job cuts taking place in December and throughout 2009. The reductions will amount to nearly 4 percent of AT&TÔÇÖs workforce, and bring the companyÔÇÖs total job cuts this year to over 25,000, although it is unsure which departments and cities will suffer the cuts.