founded 7 august 1997 headquarters westford ma area served worldwide key people raymond p. dolan president and ceo number of employees more than 3000 website http www.sonus.net sonus networks inc. nasdaq sons is a supplier of session initiation protocol based communication equipment including voip video and unified communications through ip networks . sonus was founded on august 7 1997 and went public on may 25 2000 . in january 2001 sonus acquired anousheh ansari s firm telecom technologies inc. in an all stock deal . 1 sonus subsequently integrated tti s softswitch technology intelligentip into its own packet telephony suite . 2 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 . 3 in august 2012 sonus acquired network equipment technologies inc. for 1.35 per share or approximately 42 million . the acquisition complemented their existing sbc line with the net ux series for sip trunking and sip based uc . 4 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 . 5 references edit form 8 k current report sonus networks inc. item 2 . acquisition or disposition of assets . sec . 2001 02 02 . retrieved 2015 03 22 . sonus networks completes acquisition of telecom technologies . sonus networks . 2001 01 18 . retrieved 2015 03 22 . sonus networks to restate financial results . sonus networks announces definitive agreement to acquire network equipment technologies . sonus networks announces definitive agreement to acquire performance technologies inc. . external links edit sonus company web site retrieved from https en.wikipedia.org w index.php title sonus networks & oldid 694426308 categories networking companiescompanies based in middlesex county massachusettscompanies established in 1997companies listed on nasdaq navigation menu personal tools not logged intalkcontributionscreate accountlog in namespaces article talk variants views read edit view history more search navigation main pagecontentsfeatured contentcurrent eventsrandom articledonate to wikipediawikipedia store interaction helpabout wikipediacommunity portalrecent changescontact page tools what links hererelated changesupload filespecial pagespermanent linkpage informationwikidata itemcite this page print export create a bookdownload as pdfprintable version languages add links this page was last modified on 9 december 2015 at 04 50 . text is available under the creative commons attribution sharealike license ; additional terms may apply . by using this site you agree to the terms of use and privacy policy . wikipedia is a registered trademark of the wikimedia foundation inc. a non profit organization . privacy policy about wikipedia disclaimers contact wikipedia developers cookie statement mobile view