Management

David Mandelstam is the Founder, President and CEO of Sangoma Technologies Inc., the premium provider of PC-based telephony hardware and software products for proprietary and open source based networking and telephony solutions. In this role as Founder/President/CEO, Mandelstam is responsible for the overall management of Sangoma and its future strategic direction.

David and his Research and Development team are taking an industry lead by providing revolutionary PC-based telephony hardware, including the AFT Series T1/E1/J1 voice/data cards that are engineered for today's demanding soft PBX, IVR and VoIP applications - such as Asterisk^®, Callweaver, FreeSWITCH, and Yate. They offer a competitive price and reliable performance standards unparalleled in the industry.

Before starting Sangoma in 1984, David ran an engineering company and was also the VP of Engineering for an energy conservation company. He is a pioneer developer of connectivity hardware and software products for IP telephony, Wide Area Network (WAN) and the Internet.

David holds a Bachelor of Science degree in Mechanical Engineering from the University of Witwatersrand in South Africa, a Master of Science in Aerodynamics from the Cranfield Institute of Technology in the United Kingdom and a Bachelor of Commerce from the University of South Africa.

Susan De Fields is the Chief Financial Officer of Sangoma Technologies Inc., the premium provider of PC-based telephony hardware and software products for proprietary and open source based networking and telephony solutions. In this role, Susan is responsible for ensuring the sound strategic, financial and operational functioning of the organization, including corporate governance, treasury, financial planning, accounting, personnel and shipping.

Susan brings to Sangoma, more than 20 years of cross-functional financial expertise in Financial Planning, Corporate Accounting, Treasury, Operations Finance, ERP Conversions, Corporate Amalgamations and Restructurings and Operational Process Improvement Implementations. Her expertise has been gained equally on both sides of the U.S. and Canadian border, engaged in both growing private entrepreneurial businesses as well as in the public sector in a diversity of industries including cosmetic, fragrance, hair care, television, broadcast, cable, weight loss, sports nutrition, food, and external audit. Susan's most significant accomplishments include her endurance and value-add to the business growth and development opportunities that her career has woven through and her consistent positive achievement of forecasts, budgets and corporate operational objectives.

A Certified General Accountant, Susan holds a Bachelor of Mathematics degree from the University of Waterloo.

A sports enthusiast, Susan's enjoys spending free time with her family skiing, running, travelling and the great outdoors.

Doug is Vice President of Sales and Marketing for Sangoma Technologies, the premium provider of PC-based telephony hardware and software products for proprietary and open source based networking and telephony solutions. In this role he is responsible for leading Sangoma's sales, marketing and business development strategies to embrace open source and closed sourced communication projects around the world. During his tenure, revenue has grown over 400%, the customer base has expanded to every continent around the world, and Sangoma has become a global supplier to several major PBX manufacturers.

Prior to joining Sangoma, Doug's most notable stints were in sales and marketing roles at Eicon Networks, now Dialogic, as well as 10 years in pre-sales technical and sales roles at NEC and Compaq.

Doug's technical background allows him to bridge the gap between sales and engineering. Doug is a graduate of Seneca College Electronic Engineering in Toronto and an Honors Graduate of Lakehead University in Thunder Bay, Ontario.

Doug spends his free time with his wife and four busy children. They share his passion for skiing, hockey, and power boating at his cottage in Muskoka

Nenad Corbic is the Chief Software Engineer of Sangoma Technologies Inc., the premium provider of PC-based telephony hardware and software products for proprietary and open source based networking and telephony solutions. In this role, Nenad plays an instrumental part in developing and designing the new line of Sangoma drivers, WAN and TDM protocol stacks, and APIs.

As an active Linux kernel maintainer of Linux WAN/WANPIPE drivers, Nenad has frequently submitted patches into the Linux source. He is currently managing and developing numerous open source telephony projects targeted to bridge the gap between OS projects and products. His latest projects include optimizing and expanding TDM architectures and developing high-availability Open Source VoIP/TDM switches.

Nenad is a pioneer in connectivity hardware and software products for telephony, Wide Area Networks, and the Internet.

Previously, Nenad was a software engineer in the telephony division of Nortel Networks, working on DMS and XA-Core switches.

Nenad holds an Honors degree in Computer Engineering from Ryerson University, Toronto.

Michael Feldman is the Chief Hardware Engineer for Sangoma Technologies Inc., the premium provider of PC-based telephony hardware and software products for proprietary and open source based networking and telephony solutions. In this role, Michael is responsible for leading the hardware group to maintain its high standards of quality and innovation, such as the development of Sangoma's award-winning design Advanced Flexible Telecommunications Product Line.

He has more then 20 years of extensive experience in electronics and computer hardware design. Michael has been awarded 8 patents and has 5 publications.

Michael received a Master Degree in Electronic Engineering and Computers from the Moscow Institute of Radio Engineering, Electronics and Automatics in Russia.