|Founded||1 Jan 1997|
|Key people||Raymond P. Dolan (President and CEO)|
|Employees||more than 1000|
Sonus was founded in 1997, and went public in May, 2000.
In March, 2004, Sonus Networks announced that it was likely to restate its 2002 and 2003 results because revenue was booked during the wrong periods. In June, 2004, Sonus Networks announced to restate its historical financial statements for 2001, 2002 and the first three quarters of fiscal year 2003, based on the status of its ongoing review.
On Dec 13, 2013, Sonus Networks, Inc. and Performance Technologies Inc entered into a definitive merger agreement, under which Sonus will acquire PT for $3.75 per share in cash, or approximately $30 million.