SipFactory

The SipFactory interface serves as a factory for creating various SIP Servlet API abstractions, such as SIP requests, responses, addresses, and URIs. It acts as a central point for generating protocol-level objects used in SIP communication.
SIP servlet containers are required to provide a SipFactory instance to applications. This instance can be accessed through the ServletContext attribute with the name javax.servlet.sip.SipFactory. By leveraging the SipFactory, applications can dynamically create and manage SIP-specific objects, enabling seamless integration with the SIP protocol.