Service creation, INAP and basic network interworking-what is their relationship concerning competitive services?

The available versions of the IN application protocol were specified by standardisation bodies to a large extend without explicit consideration of service creation aspects due to the restricted scope of the related IN capability sets. So CS1 does not comprise service creation and furthermore it does not consider the SMF at all. The activities concerning service creation and service management in the scope of CS2/CS3 work seem to be carried out a little bit independent on the `lower´ layer of the IN architecture, i.e. the underlying network. It is obvious from the perspective of real IN systems that service creation is heavily impacted by the available capabilities of the socket to the underlying network, i.e. the INAP, because the created services have to run using that INAP platform. There is no way to create services which exceed the capabilities of the underlying INAP. Comprehensive studies of the interworking between IN and the underlying network already identified capabilities, which are to be provided by the network. Especially for competitive services, which will exceed the capabilities of the currently standardised INAP platform, additional requirements apply to the capabilities of the underlying network. This paper discusses example service features to identify some of the network requirements