Its second-quarter revenue of US$2.562 billion was down 8 percent from a year ago, and earnings, excluding charges and other expenses, were US$0.07 per share Analysts expected the company to post US$2.745 billion in revenue for the quarter and earnings of US$0.08 per share.Nortel also this week announced the departure of Dion Joannou, president of the company's North American operations, effective