The SipApplicationSessionActivationListener interface can provide callbacks to an application when SIP Sessions are not active or activated. Keep in mind that callbacks occur only in a replicated Converged Application Server deployment.

Keep in mind that in a replicated deployment, Converged Application Server activates and passivates a SIP Session many times before and after the SIP messages are processed for the session. (This occurs normally in any deployment, even when RDBMS-based persistence is not configured.) Because this constant cycle of activation and passivation results in frequent callbacks, use SipApplicationSessionActivationListener sparingly in your applications.