An Application Server service data representation is identified specific to an IMS telephony application server.
The present document studies requirements for application server service data definition. It also studies the transfer of the defined service data between an application server and the HSS. Further, it exposes a service data definition for a telephony application server for services as defined in
TS 22.173. Finally it provides recommendations for how the framework can be reused and extended for future IMS service definitions.