Ericsson (Denmark)

The existing Service Creation Environments (SCEs) speed up the design of IN service logic, but the whole process of service creation is still relatively long. Very limited support for the service specification and validation provided by the SCEs is one of the reasons. This paper presents a graphical simulation environment called INAP Wrapper that supports IN service prototyping and validation at the early stages of service creation. INAP Wrapper is built around the standard SDL specification of the INAP CS1/2 protocol developed by ETSI. The ETSI specification has been extended by the SDL models of switched network, service management, and service control function. Service validation is based on the SDL simulation capabilities of Telelogic Tau tool suite and the animation capabilities of the INAP Wrapper GUI. The paper presents the INAP Wrapper environment and its industrial applications.KeywordsService LogicBlock TypeService CreationService ValidationService PrototypeThese keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Integration of management systems across technological and administrative domain boundaries is a necessary prerequisite for automating or optimising service management. Despite many years of standardisation effort the number of management technologies and interface specifications seems to continue to increase. An architectural approach to integrated network management, therefore, cannot be based on any single architecture or technology, but must instead be based on recognition of diversity and interoperability. The TMN-architecture is basically such an integration architecture, although OSI is sometimes assumed to be the only realisation option. This paper presents experiences with the approach taken to realise integrated network management in the European ACTS project Prospect (project number AC052). Several layers of integration have been realised, including multi-vendor and inter-domain management, and several management technologies have been integrated, namely CORBA, OSI and SNMP.

We present for the first time to our knowledge a comprehensive investigation of linear optical cross talk in an integrated switch-a packaged 4 X 4 semiconductor optical amplifier (SOA) gate switch matrix in InGaAsP-InP and show that the cross talk is a combination of interferometric and noninterferometric effects occuring on the chip.