Hi, my name is Arsen I am a team leader of Eurolan. We are small and well-established international team of developers and linux/bsd administrators. We are only focused in VoIP field and we are working here more than 7 years. Our area of experiences includes: VoIP -Asterisk PBX: Full proficiency -Freeswitch: Full proficiency -Strong knowlege of SIP protocol and SIP routers/proxy servers -OpenSER (Kamailio/OpenSips) -Load Balancing, Least Cost Routing, High Availability, NAT Traversal, Rate and billing systems, etc. -IVRs/Auto Attendant Development. SQL -MySQL/PostgreSQL - design, maintenance and optimization of databases -NoSQL - MongoDB Various Billing solutions: -A2Billing: Full proficiency (configuration from scratch, customisation) -CDRTool (prepaid billing/accounting and sip tracing for OpenSIPS using RADIUS) -CDR-Stats (call detailed statistic/realtime stat for asterisk and freeswitch) - vBilling (billing for Freeswitch) We successfully completed a large amount of commercial installations of VoIP PBX servers. From SOHO to Enterprise deployment including integrating of various VoIP solutions into existing network environment. We also have experience in building of secure "bastion" VoIP/Linux servers. Current hourly rate is $40. Fixed price projects are calculated based on the hourly rate and expected task complexity. If you choose our service we will start work on your project immediately, and we will provide you with all updates as soon as it possible. Thank you.