TimerService

The TimerService interface enables SIP servlet applications to schedule timers that trigger notifications upon expiration. This functionality allows applications to perform time-sensitive operations or handle delayed events. Notifications for expired timers are received through implementations of the TimerListener interface. To use timers, applications must implement this listener and declare it in the SIP deployment descriptor.

SIP servlet containers are mandated to provide a TimerService instance to applications. This instance is made accessible via a ServletContext attribute named javax.servlet.sip.TimerService. By leveraging the TimerService, applications can set, manage, and handle timers within the SIP.