is an experienced electrical engineer  who worked in the Dutch incumbent operator KPN´s fixed and mobile businesses, and in the telecoms branch of various ICT companies. He became an independent consultant in 1998. He has since then broadened and deepened his expertise with extensive consultancy experience in telecommunication industries working both for fixed and mobile operators and telecoms regulators in Europe, the USA and developing countries. His main areas of expertise are: Mobile Communication network technology (GSM, GPRS, UMTS, HSDPA, WLAN, LTE) , MVNO wholesale access, Number Portability, Numbering and Domain Management.