San Mateo-based International Wireless Communications Holdings Inc., a developer of cellular, radio and paging projects in Asia and Latin America, plans to raise about $50 million through an initial public offering, according to an SEC fililng. . . . Japanese auto giant Toyota Motor Corp. said it is opening a parts center in Ontario and will cut delivery time for parts from 40 days to a week. The center will employ 450. . . . Milpitas-based Octel Communications Corp. said Jean-Yves Dexmier resigned as chief financial officer of the voicemail services company. . . . Santa Clara-based Claris Corp. named Dominique Philippe Goupil president. . . . San Francisco-based Hellman & Friedman's co-founder Tully Friedman said he plans to start his own firm in April to make private equity investments in large and small companies.