Management Team

Richard N. Nottenburg, Ph. D., is president and CEO and is responsible for the strategic direction and management at Sonus Networks. Prior to joining Sonus in June 2008, Nottenburg was executive vice president and chief strategy & technology officer at Motorola, responsible for shaping Motorola’s overall corporate strategy and technology agenda. Prior to joining Motorola, Nottenburg was vice president and general manager of Vitesse Semiconductor Corporation after its merger with Multilink Technology Corporation in 2003. From 1995 to 2003, Nottenburg served as president and chief executive officer of Multilink leading the company from inception to a successful initial public offering in 2001. From 1991 to 1998, Nottenburg was a tenured associate professor of electrical engineering at the University of Southern California. In 1984, Nottenburg joined AT&T Bell Laboratories where he co-invented what in 1988 was the world's fastest transistor. Nottenburg has authored more than 50 publications and presentations and holds eight U.S. patents. He has earned three degrees in electrical engineering – a doctorate from the Ecole Polytechnique Federale de Lausanne in Lausanne, Switzerland, a master's from Colorado State University and a bachelor's from Polytechnic Institute of New York.

As chief financial officer, Richard Gaynor oversees Sonus' worldwide finance team and manages the financial strategy of one the fastest growing companies in the high-technology industry. He leads the implementation of several finance initiatives, including strengthening the company's information systems to streamline revenue conversion and quarterly accounting close processes, while providing real-time access to critical financial metrics. Richard brings Sonus nearly twenty years of financial management experience in publicly-held companies. Previously, he served as chief financial officer of Sycamore, expanding the company's market opportunities and improving its financial performance. Before his role at Sycamore, he served as the vice president and corporate controller of Manufacturers Services, Ltd. He has also served as chief financial officer of Evans and Sutherland Computer Corporation, and held various senior financial management positions with Cabletron Systems.

Guru Pai is senior vice president at Sonus Networks. Pai is responsible for Sonus’ sales and services organizations, business development and corporate strategy functions.

Pai joined Sonus from Veveo where he was vice president, marketing and business development, responsible for building strategic partnerships for business growth. Prior to joining Veveo, Pai was vice president of the Core Networks division for Motorola where he was he was responsible for product strategy. Pai joined Motorola in April 2003 through its acquisition of Winphoria Networks, Inc., where he was vice president of business development, product management and marketing. Prior to joining Winphoria Networks, Inc., Pai was a sales vice president at Lucent for emerging markets and held product management positions focused on the growing wireless and wireline service providers. Prior to Lucent, he held various positions in systems engineering and technical planning for the optical, switching, and wireless divisions of AT&T and AT&T Bell Laboratories.

As vice president of global services, Matt Dillon oversees all customer service functions, including TAC and field support, as well as the network design, performance analysis, technical publications and technical training teams. Mr. Dillon has over twenty-six years of customer service leadership experience. Prior to joining Sonus in 2001, he was a founding member of Boston Technology (later purchased by Comverse) which created the de-facto standard in scalable central office based voicemail platforms for Bell Atlantic. Initially responsible for alpha product platform design, deployment and support, Matt’s role evolved into support initiatives for the expanding customer base of RBOC and Global Service providers across the US, EMEA and Asia-Pacific. Matt started his communications career at Fisk Telephone (later purchased by Centel) as a field engineer and over the years held a variety of positions, including contracts manager, branch service manager and regional operations director.

As vice president of Product operations, Gale England is responsible for global Product Operations, including Product Testing Operations, Corporate Quality, Corporate Operations (consisting of Engineering Program Management/Business Systems), Supply Chain Management, Order Fulfillment and Execution, Distribution and Logistics, Technical Operations, and Worldwide Procurement. In this role, he is focused on streamlining the Company's operational business model and increasing cost efficiency across the organization.

Prior to joining Sonus, Gale was the CEO and President of Numetrix Inc., a San Francisco based Software Applications Company, as well as, General Manager and VP of Engineering Development at VillaMontage Systems (a Broadband Access Solution funded by Convergence Partners). He has also held senior management positions at Digital Equipment Corp., Wellfleet Communications, Inc., Bay Networks, and Nortel Networks, Inc. Gale holds a Bachelor of Science degree from California State University, a certification in professional technical management from Worcester Polytechnic Institute and in professional engineering management from Boston University. Gale has been a consultant on corporate transformations for the Graduate School of Engineering Management at Stanford University for the past several years.

Kathy Harris is the vice president, Human Resources at Sonus Networks. Bringing more than 20 years experience to Sonus, Kathy is responsible for the management and development of Sonus’ greatest assets. Since joining Sonus in 2007, Kathy has strategically aligned the HR organization to support the overall business plan and continues to develop and lead programs that deliver the talent, training and appropriate compensations that empower employees to achieve the companies business goals.

Prior to joining Sonus, Kathy held the position of vice president, HR at Lightbridge where she managed the integration of several acquisitions, instigated a culture change initiative and introduced automated performance management systems to drive greater efficiency through the organization. Prior to Lightbridge Kathy was vice president, HR at Trend-Lines, Inc., where her team provided HR services to over 1600 employees and successfully introduced an effective educational program to provide employees with standards above those provided by union action.

Kathy Harris holds a Masters in Business Administration and a Bachelors of Science degree in Government from Suffolk University, Boston. Kathy is a member of the Human Resources Leadership Forum, Society for Human Resources Management and the Northeast Human Resources Association.

Shailin Sehgal is vice president of product marketing & product management at Sonus Networks Inc. He is responsible for the strategy behind product delivery and product marketing to Sonus’ global markets. In addition, Shailin leads corporate marketing, aligning all go to market strategies for Sonus solutions worldwide.

Shailin brings over 19 years of experience in telecommunications product development, network planning and product management to this role, and strong expertise in addressing international markets. Prior to returning to Sonus at their headquarters in Westford, MA, Shailin was the founding managing director at Sonus Networks R&D center in Bangalore, India. Before moving to India, Shailin was director of Access Product Management at Sonus Networks in the US.

Prior to joining Sonus, Shailin held several key management positions at MCI (Verizon Business); from 1994 – 2000 he was the manager of the Advanced Network Architecture group and was awarded 3 patents. Shailin started his career in telecom industry in 1990 with Bell Northern Research (Nortel Networks). Shailin holds a Masters Degree in Computer Science from the University of Texas at Dallas, USA and a Bachelor Degree in Electronics Engineering from Nagpur University, India.

Mohammed Shanableh has been working for and teamed with some of the elite telecommunications industry leaders today. Almost exclusively, his talents and efforts have been concentrated on edge technology with a primary focus on voice architecture development and applications. His responsibilities have included sales, construction and development of R&D divisions that have pioneered the way for delivery of voice services over Packet Networks and has held various leadership roles of support test teams accountable for software and hardware deliveries.

Mr. Shanableh currently is responsible for Worldwide Sales and Sales Engineering for carrier customers for Sonus Networks. Prior to Sonus, He was responsible for setting the Customer Carrier Strategy for Telica, who has since been acquired by Lucent Technologies. Mohammed Also co-founded Valiant Networks. Mr. Shanableh was responsible for working with carriers and vendors in building the next generation voice and signaling networks. Mr. Shanableh had the responsibility for the OSS Integration/Voice R&D division at Williams Network Services. Prior to joining Williams’, Mr. Shanableh held executive positions with TeleHub Technologies Corporation, WorldCom and WilTel in various engineering leadership roles concentrating on many dynamic voice/data applications.

Mr. Shanableh has completed both his Bachelor and Masters of Science in Electrical Engineering at the University of Kansas.