{"title":"Least cost call routing-a brilliant application for private IN","authors":"O. Schreyer, H. Gappisch, H. Maaß","doi":"10.1109/INW.1996.539710","DOIUrl":"https://doi.org/10.1109/INW.1996.539710","url":null,"abstract":"'Least cost call routing' (LCCR) is a facility in private telecommunication networks (PTNs) used to cut the operating costs by selecting the cheapest routes for external calls. Private network operator demand for LCCR features is growing. This demand will be strengthened by deregulation as, for example, in Europe. Conventional LCCR facilities are implemented as an additional routing feature being part of the switch software. These LCCR realizations suffer from several handicaps. Our solution is based on the IN paradigm to get complex services out of the switch. We have realized a prototype LCCR server as a service control function (SCF) running on an external PC. This approach also allows to overcome limitations concerning LCCR data handling by providing a flexible service data function (SDF). Finally, a service management function (SMF) allows to fully exploit the LCCR capabilities by maintaining a global view on the PTN resources and relevant public tariffs for the calculation of the local LCCR data.","PeriodicalId":267616,"journal":{"name":"Proceedings of IN'96","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127018292","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Service specification description using extended message sequence charts between network and users","authors":"M. Okamoto, Y. Niitsu","doi":"10.1109/INW.1996.539579","DOIUrl":"https://doi.org/10.1109/INW.1996.539579","url":null,"abstract":"NTT's advanced intelligent network (IN) provides telecommunication services by using service logic programs (SLPs). These programs are executed on service-independent platforms in service control points (SCPs). The source codes of the SLPs are automatically generated in a service creation environment (SCE) by describing the service specifications in graphical form. We propose using extended message sequence charts (E-MSCs) for describing the service specifications of the advanced IN. The E-MSCs are used to represent the service procedures between the network and users. We previously proposed using the E-MSCs for describing general service specifications. By adding new descriptive elements, they can also be used to describe the service specifications of the commercial advanced IN. Three types of programs executed to provide telecommunication services are also described.","PeriodicalId":267616,"journal":{"name":"Proceedings of IN'96","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129564673","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}