With the Java Servlet coded, the application can be deployed to any Java application server that supports the Servlet 3.1 specification or newer. In this Java file upload example, the target server is ...

The SIP Servlet Specification (Java Specification Request 116), developed through the Java Community Process, provides a standard Java API programming model for delivering SIP-based services.

JSR 289: SIP Servlet v1.1 updates the SIP Servlet API and defines a standard application programming model to mix SIP servlets and Java EE components.