Sonus has said that equipment was shipped and received by the customers, and the company has either received payments or is receiving payments. "Over the past two months, we have put a great deal of effort toward completing the review of our financials and establishing new practices and controls," said CEO Hassan Ahmed in a press statement. Sonus says it expects to file a partial annual report with the Securities and Exchange Commission Monday, but that document will not contain the audited financial statements. Gear peer Nortel ( NT ) has also run into revenue timing issues, which were uncovered during an internal audit. Some observers say Nortel's accounting misadventures may have initiated an SEC probe. Nortel also said Monday that it has hired two interim accounting officials as it completes its internal audit.