QUEBEC CITY - Canadian telecom test and measurement equipment manufacturer EXFO Electro-Optical Engineering saw no change in its sales from its first quarter to its second quarter of fiscal 2009, as sales figures remained constant at US$46.4 million. The sales for its second quarter, ended February 28, 2009, were 7.1% higher than the US$43.3 million reported in the second quarter of 2008. Net bookings improved 6.3% to US$47.3 million for a book-to-bill ratio of 1.02 in the quarter, from US$44.5 million in the same period last year, but dropped 9.6% from US$52.3 million in the first quarter of 2009. Gross margin reached...