IN and TINA-how to solve the interworking

This paper examines the interworking between IN and TINA networks which will become necessary when first TINA networks emerge. In the area of IN, interworking with TINA networks will be needed, for example, for communication between service logics. For the definition of interworking scenarios the SCF-SCF INAP interface and the ISUP interface were used on the IN side. For the TINA side suitable TINA interfaces had to be identified. Based on these interfaces Interworking Units were defined. They simulate that the corresponding system is of the same technology as the originating one. This is important for the fact that interworking with a system of another technology should not imply modifications of existing systems. Two interworking scenarios will be presented, accompanied by example services. Finally the applicability of existing products for the implementation of interworking units is examined. The paper is based on the work done in Eurescom project P-508 "Evolution migration paths and interworking to TINA".