Looks like things are going great for Ditech Communications, a Mountain View, California company that has echo cancellation technology that is in high demand from companies looking to hawk VoIP technology. B. Riley & Co., a Los Angeles-based securities boutique believes that things might be looking up for this company. It had moved into profitability after two years of losses. Its initial products were used in the POTS networks but now it has expanded its product line to VoIP. Riley research chief Wes Cummins told Barrons that “company could be ready for another big run”