• 2005 - 2010 National Media and Infocommunications Authority Hungary Sales of law-enforced QoS measurement tools and methodology (IPTV, Telephony, Internet, Voice Quality, VoIP)
• 2005-2010 Invitel Sales of QoS measurement tools and methodology (Telephony, Internet)
• 2007-2010 UPC Sales of QoS measurement tools and methodology (Telephony)
  
• 2004-2010 Magyar Telekom (T-Home) Sales of QoS measurement tools and methodology (IPTV, Telephony, Internet, VoIP)
• 2008 Makedonski Telekom (Macedonia, T-Home) IPTV Consulting
• 2008 Slovak Telekom (Slovakia, T-Com) IPTV Consulting
• etc.
  

• 2011 Invitel IPTV Field Technician Training for All-staff
• 2010 Invitel IPTV Field Technician Training for All-staff
• 2010 Invitel ADSL Field Technician Training
• 2010 Magyar Telekom (T-Home) IPTV Access Network Field Technician Training
• 2009 Invitel ADSL for Invitel Subcontractors
• 2008 Magyar Telekom (T-Home) IPTV Access Network Field Technician Training
• 2008 Makedonski Telekom (Macedonia, T-Home) IPTV Training
• 2008 Slovak Telekom (Slovakia, T-Com) IPTV Training
• etc.