PortSIP Solutions focuses on VOIP software and development tools and custom software design and implementation. PortSIP provides flexible, versatile, reliable and intuitive tools for Windows. Our VOIP products development in C/C++. The PortSIP VOIP SDK support Microsoft and Borland, CodeGear development environments. PortSIP is constantly improving its products, quickly responding to the needs and suggestions of established customer base that spans 18 countries on 6 continents. The quality of our products and technical support is greatly appreciated by our customers.