SIP applications are packaged in either SAR (SIP archive) or WAR (web archive) files. These archives are standard Java archives (JAR). The SAR format is similar to and based on the WAR format, including the use of the presence of the WEB-INF folder that contains class files and deployment descriptors. SIP containers will recognize either the .sar or .war extensions when processing SIP applications.
Converged applications may be packaged in WAR files, or the SAR or WAR file may be itself packaged within an Enterprise archive (EAR), similar to a typical Java EE application. This means a SIP application that has been packaged in a SAR or WAR may be packaged with enterprise bean components, Java Persistence API JARs, and any other Java EE component that is allowed to be packaged in EAR files.