The PortSIP VOIP SDK Plugin is a powerful and versatile set of tools designed to accelerate the development of SIP applications. It allows developers to create Rich Internet Applications (RIA) and telephony extensions for existing enterprise and web applications. The SDK complies with IETF and 3GPP standards, delivering high performance and providing advanced API layers for user control and flexibility.

Developers can use the PortSIP VOIP SDK Plugin to create a wide range of applications, including soft phones, SIP-enabled Firewall/NAT, video terminals, SIP Webphone (compatible with IE, Firefox, and Chrome), interactive voice response (IVR), and video conferencing. The SDK is built on open standards, leveraging SIP to create, run, and terminate multimedia sessions. It supports popular codecs for voice and video, as well as the SIP SIMPLE standard for instant messaging and presence.

The SDK is modular, allowing developers to choose the components they need for their specific applications while maintaining a small footprint and boosting performance. It also provides high-level APIs that simplify SIP and media complexity, reducing development time. Additionally, the SDK offers a comprehensive solution with full SIP compliance, SIMPLE OMA Standard Presence and Instant Messaging capabilities, STUN NAT Traversal, and advanced testing tools. The PortSIP VOIP SDK Plugin is compatible with .NET applications and supports WPF, WinForm, and Windows Services.