WESTFORD, Mass.--(BUSINESS WIRE)--Sonus Networks, Inc. (Nasdaq: SONS), a global leader in enabling and securing real-time communications, announced today results for the first quarter ended March 27, 2015. First Quarter 2015 Highlights Total Company revenue was $50.1 million, compared to $70.7 million in the first quarter of 2014. Product revenue was $24.9 million, compared to $45.1 million in the first quarter of 2014. Service revenue was $25.2 million, compared to $25.6 million in the first q