High Quality Content by WIKIPEDIA articles! Pacific Telesis Group was one of the seven Regional Bell Operating Companies, sometimes also referred to as "RBOCs" or "Baby Bells", created in 1983 in preparation of the breakup of AT T as a holding company for Pacific Bell and Nevada Bell, Pacific Telesis International and several other non-regulated companies including PacTel Mobile Services and PacTel InfoSystems. It was acquired by SBC Communications in 1997.