My primary interests are in Voice over IP projects, though I also have experience with regular telephony technologies like SS7, ISDN etc. I have several years of experience in (open source) VoIP platforms (since 2002/2003), call center solutions and telecom solutions both for wholesale providers as well as end-user platforms.
I'm not a full-time developer, I usually work with (a team of) developers, provide platform architecture/design advice. I guide and teach developers about VoIP during my projects. I am able to handle project management and product development.
Next to setting up VoIP platforms with over 300.000 subscribers, I have experience in custom wholesale billing, voip gateways as well as (off-shore) callcenter solutions. Furthermore I have experience in design, setup and managing of Data-centers/Co-location for both Telecom as well as Hosted callcenter and extensive network knowledge.
I have past experience of several years in development of internet (web, intra- and extranet) related projects, both on windows and unix platforms.
Specialties: Voice over IP, SIP, IAX, FreeSWITCH, Asterisk, Kamailio/OpenSIPS (OpenSER), SER, sipX, MS Speech Server, Soft and Hardware IP Phones, MySQL, Server setup and Administration, Network Administration, Linux ( CentOS,Debian,Red Hat, Fedora), FreeBSD, Windows.
Development languages: PHP, perl, ASP, ASP.NET, Delphi, Visual Basic, MS SQL Server, MS Site Server (Commerce).