1. A method of servicing telephone calls by an interactive voice response system comprising: initiating, by a voice gateway, an interactive voice response session with a voice business client in response to a received a telephone call; requesting, by the voice business client, and receiving, from an application runtime environment, at least a portion of an application model; transforming, by the voice business client, the received model into a voice gateway executable format; and transmitting the transformed model to the voice gateway.