“…This need gives rise to the explosive growth of softswitches and server platforms built on softswitches such as the Lucent Softswitch. 2 As Dianda et al 3 discuss, new capabilities, in addition to programmability, include handling enhanced services (for example, converged voice/data/video), blending services, and deploying usable/scalable services. To support these new capabilities, APIs need to go beyond support for traditional telephony call models and transactions.…”