The StratoSIP Manual

StratoSIP (“SIP at a very high level”) is a domainspecific language for programming SIP applications. This manual documents Version 1.0 of StratoSIP. The runtime environment for a StratoSIP program is a SIP Servlet container [6]. StratoSIP is compiled into ECharts for SIP Servlets (E4SS) [3]; E4SS is, in turn, compiled into Java. StratoSIP is designed to enable all application programmers, even those with minimal knowledge of SIP, to program SIP applications easily and correctly. At the same time, it provides SIP experts with sufficient control over the detailed signaling behavior of their programs. This manual is also designed to serve both audiences. Its main text is intended for ordinary application programmers. For SIP experts, there is supplementary information in two places. Any section may have a supplementary part at the end labeled “For SIP experts”. In addition, footnotes clarify statements in the main text that might seem oversimplified and therefore confusing to a SIP expert.