Association for Computing Machinery
The Session Initiation Protocol (SIP) is an Internet protocol for establishing sessions between two or more parties. It is becoming ubiquitous in uses such as voice over IP, instant messaging, internet TV, and others. Performance is a chief concern with SIP because Quality of Service (QoS) is important and SIP has internal timers that need to be honored or net-work efficiency suffers. The java community has even pro-vided a standardized API so that SIP applications can now be built using java application servers. These new capabilities also bring with them new performance engineering methods, tools, and benchmarking needs.