I have more than 15 years of experience installing Call Centers in America (Latin and USA). I have installed several Open Source platforms (Asterisk, elastix, FreePBX, Freeswitch, Vicidial), and through reengineering solved and fixed problems that come with the source code. I have installations of more than 400 agents, integrations with my own or open source CRM, SOAP, BD (Oracle, MySQL, SQL Server, AS400, Informix, DB2, AS400), REST.