A service logic program structure of UPT service in intelligent networks

A single SLP may be a solution for UPT services. However, the authors propose a strategy of building UPT services with multiple SLPs which can be triggered independently. They also discuss a structure that treats these SLPs as a single SLP. These structures make it easy to enhance UPT services, because additional SLPs may introduce new UPT features independently. Furthermore, the relationship is clarified between personal mobility and UPT service's SLP triggering, the cooperation of adjacent UPT service SLPs, and the required functions to support SLP cooperation.