An application execution environment for an intelligent network. The application execution environment includes a service logic execution environment (SLEE) in a service logic layer. Notably, the SLEE can be a JAIN-compliant SLEE. The SLEE can include an event routing bus for routing events between service components in the service logic layer and client components in a protocol layer and an application layer. The application execution environment also can include at least one client component in the protocol layer, wherein the at least one client component is communicatively linked to the SLEE through a connector/wrapper interface. Finally, the application execution environment can include at least one telephony service component executing in the SLEE, wherein the telephony component can be configured to communicate with client components in the protocol layer and other service components in the service logic layer through the event routing bus in the SLEE.