Moody’s upgraded some Pacific Bell issue ratings.

The bond-rating service changed the Pacific Telesis subsidiary’s rating on debenture issues to AA3 from A1 and the ratings of various debt securities in shelf registration to prospective AA3 from A1. The changes “recognized management’s strong efforts to bolster profitability through operating cost reductions and continued strong demand for telecommunications services in California,” Moody’s said. It also cited a strengthened balance sheet through refunding high-cost debt and building common equity, along with improved productivity and profitability.